112 lines
4.0 KiB
Python
112 lines
4.0 KiB
Python
#coding=utf-8
|
||
import mvsdk
|
||
|
||
def main():
|
||
# 枚举相机
|
||
DevList = mvsdk.CameraEnumerateDevice()
|
||
nDev = len(DevList)
|
||
if nDev < 1:
|
||
print("No camera was found!")
|
||
return
|
||
|
||
for i, DevInfo in enumerate(DevList):
|
||
print("{}: {} {}".format(i, DevInfo.GetFriendlyName(), DevInfo.GetPortType()))
|
||
i = 0 if nDev == 1 else int(input("Select camera: "))
|
||
DevInfo = DevList[i]
|
||
print(DevInfo)
|
||
|
||
# 打开相机
|
||
hCamera = 0
|
||
try:
|
||
hCamera = mvsdk.CameraInit(DevInfo, -1, -1)
|
||
except mvsdk.CameraException as e:
|
||
print("CameraInit Failed({}): {}".format(e.error_code, e.message) )
|
||
return
|
||
|
||
# 获取相机特性描述
|
||
cap = mvsdk.CameraGetCapability(hCamera)
|
||
PrintCapbility(cap)
|
||
|
||
# 判断是黑白相机还是彩色相机
|
||
monoCamera = (cap.sIspCapacity.bMonoSensor != 0)
|
||
|
||
# 黑白相机让ISP直接输出MONO数据，而不是扩展成R=G=B的24位灰度
|
||
if monoCamera:
|
||
mvsdk.CameraSetIspOutFormat(hCamera, mvsdk.CAMERA_MEDIA_TYPE_MONO8)
|
||
|
||
# 相机模式切换成连续采集
|
||
mvsdk.CameraSetTriggerMode(hCamera, 0)
|
||
|
||
# 手动曝光，曝光时间30ms
|
||
mvsdk.CameraSetAeState(hCamera, 0)
|
||
mvsdk.CameraSetExposureTime(hCamera, 30 * 1000)
|
||
|
||
# 让SDK内部取图线程开始工作
|
||
mvsdk.CameraPlay(hCamera)
|
||
|
||
# 计算RGB buffer所需的大小，这里直接按照相机的最大分辨率来分配
|
||
FrameBufferSize = cap.sResolutionRange.iWidthMax * cap.sResolutionRange.iHeightMax * (1 if monoCamera else 3)
|
||
|
||
# 分配RGB buffer，用来存放ISP输出的图像
|
||
# 备注：从相机传输到PC端的是RAW数据，在PC端通过软件ISP转为RGB数据（如果是黑白相机就不需要转换格式，但是ISP还有其它处理，所以也需要分配这个buffer）
|
||
pFrameBuffer = mvsdk.CameraAlignMalloc(FrameBufferSize, 16)
|
||
|
||
# 从相机取一帧图片
|
||
try:
|
||
pRawData, FrameHead = mvsdk.CameraGetImageBuffer(hCamera, 2000)
|
||
mvsdk.CameraImageProcess(hCamera, pRawData, pFrameBuffer, FrameHead)
|
||
mvsdk.CameraReleaseImageBuffer(hCamera, pRawData)
|
||
|
||
# 此时图片已经存储在pFrameBuffer中，对于彩色相机pFrameBuffer=RGB数据，黑白相机pFrameBuffer=8位灰度数据
|
||
# 该示例中我们只是把图片保存到硬盘文件中
|
||
status = mvsdk.CameraSaveImage(hCamera, "./grab.bmp", pFrameBuffer, FrameHead, mvsdk.FILE_BMP, 100)
|
||
if status == mvsdk.CAMERA_STATUS_SUCCESS:
|
||
print("Save image successfully. image_size = {}X{}".format(FrameHead.iWidth, FrameHead.iHeight) )
|
||
else:
|
||
print("Save image failed. err={}".format(status) )
|
||
except mvsdk.CameraException as e:
|
||
print("CameraGetImageBuffer failed({}): {}".format(e.error_code, e.message) )
|
||
|
||
# 关闭相机
|
||
mvsdk.CameraUnInit(hCamera)
|
||
|
||
# 释放帧缓存
|
||
mvsdk.CameraAlignFree(pFrameBuffer)
|
||
|
||
def PrintCapbility(cap):
|
||
for i in range(cap.iTriggerDesc):
|
||
desc = cap.pTriggerDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iImageSizeDesc):
|
||
desc = cap.pImageSizeDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iClrTempDesc):
|
||
desc = cap.pClrTempDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iMediaTypeDesc):
|
||
desc = cap.pMediaTypeDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iFrameSpeedDesc):
|
||
desc = cap.pFrameSpeedDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iPackLenDesc):
|
||
desc = cap.pPackLenDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iPresetLut):
|
||
desc = cap.pPresetLutDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iAeAlmSwDesc):
|
||
desc = cap.pAeAlmSwDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iAeAlmHdDesc):
|
||
desc = cap.pAeAlmHdDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iBayerDecAlmSwDesc):
|
||
desc = cap.pBayerDecAlmSwDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
for i in range(cap.iBayerDecAlmHdDesc):
|
||
desc = cap.pBayerDecAlmHdDesc[i]
|
||
print("{}: {}".format(desc.iIndex, desc.GetDescription()) )
|
||
|
||
main()
|