561 lines
17 KiB
Python
561 lines
17 KiB
Python
import os
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import time
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import math
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import ctypes as C
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from ctypes import wintypes as W
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import numpy as np
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import cv2
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# =========================
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# CONFIG
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# =========================
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SDK_DIR = os.path.join(os.path.dirname(__file__), "dlls")
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DLL_NAME = "VT_SDK64.dll"
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TIMEOUT_MS = 2000
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WINDOW_NAME = "GAL5000 4CH Preview (A=AE, Q=quit)"
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# Camera scan/open
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DEVICE_UDEF = 0
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DEVICE_INDEX = 0
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DATA_RAW = 0
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# RAW geometry (já conhecido da GAL5000)
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RAW_W = 2592
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RAW_H = 2056
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# PARAM IDs (apenas os que sabemos que existem)
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BUF_SIZE = 256
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PARAM_ID_SENSOR_EXPOSURETIMERAW = 0x00003010
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PARAM_ID_SENSOR_GAINANALOGRAW = 0x00003020
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PARAM_ID_SENSOR_GAINDIGITRAW = 0x0000302A
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PARAM_ID_SFNC_SENSORWIDTH = 0x00001101
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PARAM_ID_SFNC_SENSORHEIGHT = 0x00001102
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PARAM_ID_SFNC_WIDTHMAX = 0x00001106
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PARAM_ID_SFNC_HEIGHTMAX = 0x00001107
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PARAM_ID_SFNC_WIDTH = 0x00001111
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PARAM_ID_SFNC_HEIGHT = 0x00001112
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PARAM_ID_SFNC_OFFSETX = 0x00001113
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PARAM_ID_SFNC_OFFSETY = 0x00001114
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PARAM_ID_SFNC_EXPOSURETIME = 0x0000121A # pode ou não refletir algo útil
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# PARAM_VALUETYPE
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VALUE_INT = 0
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VALUE_FLOAT = 1
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VALUE_STR = 2
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# =========================
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# LIMITES / HOTKEYS
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# =========================
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# Exposição em unidades RAW (linhas)
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EXP_MIN = 1
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EXP_MAX = 20000 # ajusta depois se ver que a câmera aceita mais/menos
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EXP_STEP = 200 # passo “normal” (+/-)
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EXP_STEP_FAST = 1000 # passo rápido ([ ])
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# Ganho analógico
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GAIN_A_MIN = 0
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GAIN_A_MAX = 255
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GAIN_A_STEP = 2
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# Ganho digital
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GAIN_D_MIN = 0
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GAIN_D_MAX = 8 # chute conservador; hoje está em 2
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GAIN_D_STEP = 1
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# ROI para análise (chão)
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ROI_Y0_FRAC = 0.55
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ROI_Y1_FRAC = 0.95
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ROI_X0_FRAC = 0.15
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ROI_X1_FRAC = 0.85
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# Alvo de brilho / saturação
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TARGET_P95 = 140.0 # alvo de brilho (0..255)
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DEADBAND = 6.0 # zona morta em torno do alvo
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SAT_LIMIT = 0.02 # fração máxima de pixels saturados (2%)
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# Controle log / suavização
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K_LOG = 0.12 # ganho do controlador em log
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MAX_STEP = 0.10 # limite do passo (em espaço log) por iteração
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EMA_ALPHA = 0.20 # suavização do p95
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def clamp(v, lo, hi):
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return lo if v < lo else hi if v > hi else v
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# =========================
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# STRUCTS
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# =========================
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class VT_FRAMEINFO(C.Structure):
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_fields_ = [
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("lFrameID", W.DWORD),
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("lBufSize", W.DWORD),
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("lWidth", W.DWORD),
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("lHeight", W.DWORD),
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("lPixBits", C.c_ubyte),
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("_pad0", C.c_ubyte * 3),
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("pBufPtr", C.POINTER(C.c_ubyte)),
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("lFrameStatus", W.DWORD),
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("lPixType", W.DWORD),
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("lTimeStamp", W.DWORD),
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("_reserve", W.DWORD * 8),
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]
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class VT_DEVPARAM(C.Structure):
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_fields_ = [
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("bUseName", W.BOOL),
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("lParamByID", W.DWORD),
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("lParamByName", C.c_char * BUF_SIZE),
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]
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def devparam_by_id(pid: int) -> VT_DEVPARAM:
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p = VT_DEVPARAM()
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p.bUseName = False
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p.lParamByID = pid
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p.lParamByName = b""
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return p
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# =========================
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# DLL LOAD + prototypes
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# =========================
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os.add_dll_directory(SDK_DIR)
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dll = C.WinDLL(os.path.join(SDK_DIR, DLL_NAME))
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print("DLL carregada OK:", dll)
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dll.VT_DeviceScan.argtypes = [C.POINTER(C.c_ubyte), C.c_int]
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dll.VT_DeviceScan.restype = C.c_int
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dll.VT_DeviceOpen.argtypes = [C.c_void_p, C.POINTER(W.HANDLE), C.c_int, C.c_int]
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dll.VT_DeviceOpen.restype = C.c_int
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dll.VT_SingleFrameCapture.argtypes = [W.HANDLE, C.POINTER(VT_FRAMEINFO), C.c_int, C.c_int, W.BOOL]
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dll.VT_SingleFrameCapture.restype = C.c_int
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dll.VT_DeviceClose.argtypes = [C.POINTER(W.HANDLE)]
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dll.VT_DeviceClose.restype = C.c_int
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dll.VT_ParamGetValue.argtypes = [W.HANDLE, VT_DEVPARAM, C.c_void_p, C.c_int]
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dll.VT_ParamGetValue.restype = C.c_int
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dll.VT_ParamSetValue.argtypes = [W.HANDLE, VT_DEVPARAM, C.c_void_p, C.c_int]
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dll.VT_ParamSetValue.restype = C.c_int
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def ck(ret: int, name: str):
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if ret != 0:
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raise RuntimeError(f"{name} falhou, ret={ret}")
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def param_get_int(h: W.HANDLE, pid: int) -> int:
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p = devparam_by_id(pid)
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v = C.c_int(0)
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ret = dll.VT_ParamGetValue(h, p, C.byref(v), VALUE_INT)
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ck(ret, f"VT_ParamGetValue({hex(pid)})")
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return int(v.value)
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def param_set_int(h: W.HANDLE, pid: int, value: int):
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p = devparam_by_id(pid)
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v = C.c_int(int(value))
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ret = dll.VT_ParamSetValue(h, p, C.byref(v), VALUE_INT)
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ck(ret, f"VT_ParamSetValue({hex(pid)})")
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def param_get_float(h: W.HANDLE, pid: int) -> float:
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p = devparam_by_id(pid)
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v = C.c_float(0.0)
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ret = dll.VT_ParamGetValue(h, p, C.byref(v), VALUE_FLOAT)
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ck(ret, f"VT_ParamGetValue({hex(pid)})")
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return float(v.value)
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# =========================
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# CAPTURA / VISUALIZAÇÃO
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# =========================
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def capture_raw8(h: W.HANDLE) -> np.ndarray:
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fi = VT_FRAMEINFO()
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ret = dll.VT_SingleFrameCapture(h, C.byref(fi), DATA_RAW, TIMEOUT_MS, True)
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ck(ret, "VT_SingleFrameCapture")
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w, hh = int(fi.lWidth), int(fi.lHeight)
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if w != RAW_W or hh != RAW_H:
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print(f"[WARN] Res mudou: {w}x{hh} (esperado {RAW_W}x{RAW_H})")
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buf = C.string_at(fi.pBufPtr, fi.lBufSize)
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arr = np.frombuffer(buf, dtype=np.uint8)
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needed = w * hh
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if arr.size < needed:
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arr = np.pad(arr, (0, needed - arr.size), mode="constant", constant_values=0)
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arr = arr[:needed].reshape(hh, w)
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return arr
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def make_montage_4ch(raw: np.ndarray) -> np.ndarray:
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# Bayer+NIR pattern:
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# R G
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# IR B
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R = raw[0::2, 0::2]
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G = raw[0::2, 1::2]
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IR = raw[1::2, 0::2]
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B = raw[1::2, 1::2]
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def norm8(x):
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lo = np.percentile(x, 2)
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hi = np.percentile(x, 98)
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if hi <= lo + 1:
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return x
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y = (x.astype(np.float32) - lo) * (255.0 / (hi - lo))
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return np.clip(y, 0, 255).astype(np.uint8)
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Rn, Gn, IRn, Bn = map(norm8, [R, G, IR, B])
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top = np.hstack([Rn, Gn])
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bot = np.hstack([IRn, Bn])
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mont = np.vstack([top, bot])
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mont_bgr = cv2.cvtColor(mont, cv2.COLOR_GRAY2BGR)
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h2, w2 = Rn.shape
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cv2.putText(mont_bgr, "R", (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 1.0, (255,255,255), 2, cv2.LINE_AA)
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cv2.putText(mont_bgr, "G", (w2 + 10, 30), cv2.FONT_HERSHEY_SIMPLEX, 1.0, (255,255,255), 2, cv2.LINE_AA)
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cv2.putText(mont_bgr, "IR", (10, h2 + 30), cv2.FONT_HERSHEY_SIMPLEX, 1.0, (255,255,255), 2, cv2.LINE_AA)
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cv2.putText(mont_bgr, "B", (w2 + 10, h2 + 30), cv2.FONT_HERSHEY_SIMPLEX, 1.0, (255,255,255), 2, cv2.LINE_AA)
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return mont_bgr
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def make_rgb_preview(raw: np.ndarray, upscale=2) -> np.ndarray:
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R = raw[0::2, 0::2]
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G = raw[0::2, 1::2]
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B = raw[1::2, 1::2]
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def norm8(x):
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lo = np.percentile(x, 2)
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hi = np.percentile(x, 98)
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if hi <= lo + 1:
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return x
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y = (x.astype(np.float32) - lo) * (255.0 / (hi - lo))
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return np.clip(y, 0, 255).astype(np.uint8)
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Rn, Gn, Bn = map(norm8, [R, G, B])
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rgb = np.dstack([Bn, Gn, Rn]) # OpenCV = BGR
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if upscale and upscale != 1:
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rgb = cv2.resize(rgb, (rgb.shape[1]*upscale, rgb.shape[0]*upscale),
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interpolation=cv2.INTER_NEAREST)
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return rgb
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def draw_text(img, text, pos, scale=0.8):
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x, y = pos
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cv2.putText(img, text, (x+2, y+2),
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cv2.FONT_HERSHEY_SIMPLEX, scale,
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(0, 0, 0), 3, cv2.LINE_AA)
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cv2.putText(img, text, (x, y),
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cv2.FONT_HERSHEY_SIMPLEX, scale,
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(255, 255, 255), 2, cv2.LINE_AA)
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def overlay_hud(img, ae_enabled, exp_raw, gain_a, gain_d, fps, dbg):
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p95 = dbg.get("p95", None)
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sat = dbg.get("sat", None)
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lines = [
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f"AE: {'ON' if ae_enabled else 'OFF'}",
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f"ExposureRaw: {exp_raw}",
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f"Gain A: {gain_a} | Gain D: {gain_d}",
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f"FPS: {fps:.1f}",
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]
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if p95 is not None and sat is not None:
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lines.append(f"p95: {p95:.1f} | sat: {sat*100:.2f}%")
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lines.append("Keys: A=AE +/- / [ ] exp Z/X gainA C/V gainD Q=quit")
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y = 30
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for s in lines:
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draw_text(img, s, (12, y), scale=0.80)
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y += 26
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# =========================
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# AE CONTROLLER (software)
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# =========================
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def measure_raw_g_metrics(raw: np.ndarray):
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"""
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Mede p90/p95/saturação no canal G cru (8-bit),
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usando apenas uma ROI voltada ao chão.
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"""
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H, W = raw.shape[:2]
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# canal G cru (Bayer layout R/G/IR/B):
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G = raw[0::2, 1::2] # ~ H/2 x W/2
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h2, w2 = G.shape
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y0 = int(h2 * ROI_Y0_FRAC)
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y1 = int(h2 * ROI_Y1_FRAC)
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x0 = int(w2 * ROI_X0_FRAC)
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x1 = int(w2 * ROI_X1_FRAC)
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roi = G[y0:y1, x0:x1]
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p90 = float(np.percentile(roi, 90))
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p95 = float(np.percentile(roi, 95))
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sat = float(np.mean(roi >= 250))
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return p90, p95, sat
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class AEController:
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def __init__(self,
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exp_min=EXP_MIN,
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exp_max=EXP_MAX,
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target_p95=TARGET_P95,
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deadband=DEADBAND,
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k=K_LOG,
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max_step=MAX_STEP,
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ema_alpha=EMA_ALPHA,
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sat_limit=SAT_LIMIT,
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use_gain=True):
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self.exp_min = exp_min
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self.exp_max = exp_max
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self.target = target_p95
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self.deadband = deadband
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self.k = k
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self.max_step = max_step
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self.ema_alpha = ema_alpha
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self.sat_limit = sat_limit
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self.use_gain = use_gain
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self.p95_ema = None
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def step(self, raw: np.ndarray, exp_raw: int,
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gain_a: int, gain_d: int):
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"""
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Retorna (new_exp, new_gain_a, new_gain_d, dbg)
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"""
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p90, p95, sat = measure_raw_g_metrics(raw)
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# EMA do p95
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if self.p95_ema is None:
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self.p95_ema = p95
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else:
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self.p95_ema = (1.0 - self.ema_alpha) * self.p95_ema + self.ema_alpha * p95
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e = self.target - self.p95_ema
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# deadband: se está perto do alvo e não saturando, não mexe
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if abs(e) <= self.deadband and sat <= self.sat_limit:
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dbg = {
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"p90": p90,
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"p95": p95,
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"p95_ema": self.p95_ema,
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"sat": sat,
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"step": 0.0,
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"hold": True
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}
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return exp_raw, gain_a, gain_d, dbg
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# cálculo do step em log
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if sat > self.sat_limit:
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# saturou: garante um passo negativo mínimo
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step = -min(self.max_step, 0.12)
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else:
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ratio = (self.target + 1e-6) / (self.p95_ema + 1e-6)
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step = self.k * math.log(ratio)
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step = clamp(step, -self.max_step, +self.max_step)
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new_exp = int(round(exp_raw * math.exp(step)))
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new_exp = clamp(new_exp, self.exp_min, self.exp_max)
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new_gain_a = gain_a
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new_gain_d = gain_d
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if self.use_gain:
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# se exposição chegou no teto e ainda está escuro, sobe ganho analógico
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if new_exp >= self.exp_max and self.p95_ema < (self.target - self.deadband):
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new_gain_a = clamp(gain_a + GAIN_A_STEP, GAIN_A_MIN, GAIN_A_MAX)
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# se exposição chegou no chão e está muito claro/saturando, baixa ganho analógico
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if new_exp <= self.exp_min and (self.p95_ema > (self.target + self.deadband) or sat > self.sat_limit):
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new_gain_a = clamp(gain_a - GAIN_A_STEP, GAIN_A_MIN, GAIN_A_MAX)
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dbg = {
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"p90": p90,
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"p95": p95,
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"p95_ema": self.p95_ema,
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"sat": sat,
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"step": step,
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"hold": False
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}
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return new_exp, new_gain_a, new_gain_d, dbg
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# =========================
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# MAIN
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# =========================
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def main():
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# scan
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n = C.c_ubyte(0)
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ret = dll.VT_DeviceScan(C.byref(n), DEVICE_UDEF)
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ck(ret, "VT_DeviceScan")
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if n.value == 0:
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raise RuntimeError("Nenhuma câmera encontrada.")
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# open
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idx = C.c_ubyte(0)
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h = W.HANDLE()
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ret = dll.VT_DeviceOpen(C.byref(idx), C.byref(h), DEVICE_INDEX, DEVICE_UDEF)
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ck(ret, "VT_DeviceOpen")
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print("DeviceOpen OK, handle=", h.value)
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# Info básica do sensor / ROI (opcional, mas útil pra log)
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try:
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sensor_w = param_get_int(h, PARAM_ID_SFNC_SENSORWIDTH)
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sensor_h = param_get_int(h, PARAM_ID_SFNC_SENSORHEIGHT)
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width_max = param_get_int(h, PARAM_ID_SFNC_WIDTHMAX)
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height_max= param_get_int(h, PARAM_ID_SFNC_HEIGHTMAX)
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roi_w = param_get_int(h, PARAM_ID_SFNC_WIDTH)
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roi_h = param_get_int(h, PARAM_ID_SFNC_HEIGHT)
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roi_x = param_get_int(h, PARAM_ID_SFNC_OFFSETX)
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roi_y = param_get_int(h, PARAM_ID_SFNC_OFFSETY)
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print(f"[CAM] sensor={sensor_w}x{sensor_h} roi={roi_w}x{roi_h}+{roi_x},{roi_y} max={width_max}x{height_max}")
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except Exception as e:
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print("[CAM] Não foi possível ler info SFNC:", e)
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# ler exp/gains atuais
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try:
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exp_raw = param_get_int(h, PARAM_ID_SENSOR_EXPOSURETIMERAW)
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except Exception:
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exp_raw = 1500
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try:
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gain_a = param_get_int(h, PARAM_ID_SENSOR_GAINANALOGRAW)
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except Exception:
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gain_a = 0
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try:
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gain_d = param_get_int(h, PARAM_ID_SENSOR_GAINDIGITRAW)
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except Exception:
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gain_d = 0
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print(f"[INIT] exp_raw={exp_raw} gainA={gain_a} gainD={gain_d}")
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cv2.namedWindow(WINDOW_NAME, cv2.WINDOW_NORMAL)
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cv2.namedWindow("RGB", cv2.WINDOW_NORMAL)
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show_rgb = True
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t0 = time.time()
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frames = 0
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fps = 0.0
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ae = AEController()
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ae_enabled = True
|
|
dbg_last = {}
|
|
|
|
def set_exposure(new_exp: int) -> int:
|
|
new_exp = clamp(int(new_exp), EXP_MIN, EXP_MAX)
|
|
param_set_int(h, PARAM_ID_SENSOR_EXPOSURETIMERAW, new_exp)
|
|
return new_exp
|
|
|
|
def set_gain_a(new_gain: int) -> int:
|
|
new_gain = clamp(int(new_gain), GAIN_A_MIN, GAIN_A_MAX)
|
|
param_set_int(h, PARAM_ID_SENSOR_GAINANALOGRAW, new_gain)
|
|
return new_gain
|
|
|
|
def set_gain_d(new_gain: int) -> int:
|
|
new_gain = clamp(int(new_gain), GAIN_D_MIN, GAIN_D_MAX)
|
|
param_set_int(h, PARAM_ID_SENSOR_GAINDIGITRAW, new_gain)
|
|
return new_gain
|
|
|
|
try:
|
|
while True:
|
|
raw = capture_raw8(h)
|
|
|
|
# Auto-exposure em software
|
|
if ae_enabled:
|
|
new_exp, new_gain_a, new_gain_d, dbg = ae.step(raw, exp_raw, gain_a, gain_d)
|
|
|
|
if new_exp != exp_raw:
|
|
exp_raw = set_exposure(new_exp)
|
|
|
|
if new_gain_a != gain_a and False:
|
|
gain_a = set_gain_a(new_gain_a)
|
|
|
|
if new_gain_d != gain_d:
|
|
gain_d = set_gain_d(new_gain_d)
|
|
|
|
dbg_last = dbg
|
|
else:
|
|
dbg_last = {}
|
|
|
|
montage = make_montage_4ch(raw)
|
|
|
|
# FPS calculado
|
|
frames += 1
|
|
dt = time.time() - t0
|
|
if dt >= 1.0:
|
|
fps = frames / dt
|
|
frames = 0
|
|
t0 = time.time()
|
|
|
|
overlay_hud(montage, ae_enabled, exp_raw, gain_a, gain_d, fps, dbg_last)
|
|
cv2.imshow(WINDOW_NAME, montage)
|
|
|
|
if show_rgb:
|
|
rgb = make_rgb_preview(raw, upscale=2)
|
|
cv2.imshow("RGB", rgb)
|
|
|
|
k = cv2.waitKey(1) & 0xFF
|
|
|
|
if k in (ord('q'), ord('Q'), 27):
|
|
break
|
|
|
|
elif k in (ord('a'), ord('A')):
|
|
ae_enabled = not ae_enabled
|
|
print("AE (software) =", ae_enabled)
|
|
|
|
elif k in (ord('m'), ord('M')):
|
|
show_rgb = not show_rgb
|
|
if not show_rgb:
|
|
cv2.destroyWindow("RGB")
|
|
else:
|
|
cv2.namedWindow("RGB", cv2.WINDOW_NORMAL)
|
|
|
|
# Controles manuais só quando AE está desligado
|
|
elif not ae_enabled:
|
|
if k in (ord('+'), ord('=')):
|
|
exp_raw = set_exposure(exp_raw + EXP_STEP)
|
|
print(f"[MANUAL] ExposureRaw -> {exp_raw}")
|
|
elif k in (ord('-'), ord('_')):
|
|
exp_raw = set_exposure(exp_raw - EXP_STEP)
|
|
print(f"[MANUAL] ExposureRaw -> {exp_raw}")
|
|
elif k == ord(']'):
|
|
exp_raw = set_exposure(exp_raw + EXP_STEP_FAST)
|
|
print(f"[MANUAL] ExposureRaw (fast) -> {exp_raw}")
|
|
elif k == ord('['):
|
|
exp_raw = set_exposure(exp_raw - EXP_STEP_FAST)
|
|
print(f"[MANUAL] ExposureRaw (fast) -> {exp_raw}")
|
|
elif k in (ord('z'), ord('Z')):
|
|
gain_a = set_gain_a(gain_a - GAIN_A_STEP)
|
|
print(f"[MANUAL] GainA -> {gain_a}")
|
|
elif k in (ord('x'), ord('X')):
|
|
gain_a = set_gain_a(gain_a + GAIN_A_STEP)
|
|
print(f"[MANUAL] GainA -> {gain_a}")
|
|
elif k in (ord('c'), ord('C')):
|
|
gain_d = set_gain_d(gain_d - GAIN_D_STEP)
|
|
print(f"[MANUAL] GainD -> {gain_d}")
|
|
elif k in (ord('v'), ord('V')):
|
|
gain_d = set_gain_d(gain_d + GAIN_D_STEP)
|
|
print(f"[MANUAL] GainD -> {gain_d}")
|
|
else:
|
|
pass
|
|
|
|
finally:
|
|
try:
|
|
ret = dll.VT_DeviceClose(C.byref(h))
|
|
if ret != 0:
|
|
print("VT_DeviceClose retornou:", ret)
|
|
except Exception as e:
|
|
print("Erro ao fechar:", e)
|
|
cv2.destroyAllWindows()
|
|
print("Fim.")
|
|
|
|
if __name__ == "__main__":
|
|
main()
|