python通过调用海康SDK打开工业相机完全流程

pip install numpy opencv-python  # 可选，用于图像处理

import ctypes
# 加载SDK库
sdk_lib = ctypes.cdll.LoadLibrary("MvCameraControl.dll")
# 初始化设备
device_list = ctypes.c_void_p()
sdk_lib.MV_CC_EnumDevices(ctypes.byref(device_list))

# 选择第一个设备
handle = ctypes.c_void_p()
sdk_lib.MV_CC_CreateHandle(ctypes.byref(handle), device_list)
# 打开设备
ret = sdk_lib.MV_CC_OpenDevice(handle)
if ret != 0:
    raise RuntimeError("Failed to open device")
# 设置参数（示例：曝光时间）
exposure_time = ctypes.c_float(1000.0)
sdk_lib.MV_CC_SetFloatValue(handle, "ExposureTime", exposure_time)

# 开始采集
sdk_lib.MV_CC_StartGrabbing(handle)
# 获取图像数据
data_buf = (ctypes.c_ubyte * 1024 * 1024)()  # 缓冲区
frame_info = ctypes.create_string_buffer(1024)
ret = sdk_lib.MV_CC_GetOneFrameTimeout(handle, data_buf, len(data_buf), frame_info, 1000)
if ret != 0:
    raise RuntimeError("Failed to grab frame")

import numpy as np
import cv2
# 转换为numpy数组
img_data = np.frombuffer(data_buf, dtype=np.uint8)
img = cv2.imdecode(img_data, cv2.IMREAD_COLOR)
# 显示图像
cv2.imshow("Industrial Camera", img)
cv2.waitKey(0)

# 停止采集
sdk_lib.MV_CC_StopGrabbing(handle)
# 关闭设备
sdk_lib.MV_CC_CloseDevice(handle)
sdk_lib.MV_CC_DestroyHandle(handle)