海康相机多线程

Work_thread.py

def Work_thread(self,root,panel):
    stOutFrame = MV_FRAME_OUT()  
    img_buff = None
    buf_cache = None
    numArray = None
    while True:
        ret = self.obj_cam.MV_CC_GetImageBuffer(stOutFrame, 1000)
        if 0 == ret:
            if None == buf_cache:
                buf_cache = (c_ubyte * stOutFrame.stFrameInfo.nFrameLen)()
            #获取到图像的时间开始节点获取到图像的时间开始节点
            self.st_frame_info = stOutFrame.stFrameInfo
            cdll.msvcrt.memcpy(byref(buf_cache), stOutFrame.pBufAddr, self.st_frame_info.nFrameLen)
            print ("get one frame: Width[%d], Height[%d], nFrameNum[%d]"  % (self.st_frame_info.nWidth, self.st_frame_info.nHeight, self.st_frame_info.nFrameNum))
            self.n_save_image_size = self.st_frame_info.nWidth * self.st_frame_info.nHeight * 3 + 2048
            if img_buff is None:
                img_buff = (c_ubyte * self.n_save_image_size)()

            if True == self.b_save_jpg:
                self.Save_jpg(buf_cache) #ch:保存Jpg图片 | en:Save Jpg
            if True == self.b_save_bmp:
                self.Save_Bmp(buf_cache) #ch:保存Bmp图片 | en:Save Bmp
        else:
            print("no data, nret = "+self.To_hex_str(ret))
            continue

        #转换像素结构体赋值
        stConvertParam = MV_CC_PIXEL_CONVERT_PARAM()
        memset(byref(stConvertParam), 0, sizeof(stConvertParam))
        stConvertParam.nWidth = self.st_frame_info.nWidth
        stConvertParam.nHeight = self.st_frame_info.nHeight
        stConvertParam.pSrcData = cast(buf_cache, POINTER(c_ubyte))
        stConvertParam.nSrcDataLen = self.st_frame_info.nFrameLen
        stConvertParam.enSrcPixelType = self.st_frame_info.enPixelType 

        # RGB直接显示
        if PixelType_Gvsp_RGB8_Packed == self.st_frame_info.enPixelType:
            numArray = CameraOperation.Color_numpy(self,buf_cache,self.st_frame_info.nWidth,self.st_frame_info.nHeight)

        #如果是彩色且非RGB则转为RGB后显示
        else:
            nConvertSize = self.st_frame_info.nWidth * self.st_frame_info.nHeight * 3
            stConvertParam.enDstPixelType = PixelType_Gvsp_RGB8_Packed
            stConvertParam.pDstBuffer = (c_ubyte * nConvertSize)()
            stConvertParam.nDstBufferSize = nConvertSize
            time_start=time.time()
            ret = self.obj_cam.MV_CC_ConvertPixelType(stConvertParam)
            time_end=time.time()
            print('MV_CC_ConvertPixelType:',time_end - time_start) 
            if ret != 0:
                tkinter.messagebox.showerror('show error','convert pixel fail! ret = '+self.To_hex_str(ret))
                continue
            cdll.msvcrt.memcpy(byref(img_buff), stConvertParam.pDstBuffer, nConvertSize)
            numArray = CameraOperation.Color_numpy(self,img_buff,self.st_frame_info.nWidth,self.st_frame_info.nHeight)

        #合并OpenCV到Tkinter界面中
        current_image = Image.fromarray(numArray).resize((800, 600), Image.ANTIALIAS) 
        imgtk = ImageTk.PhotoImage(image=current_image, master=root)
        panel.imgtk = imgtk       
        panel.config(image=imgtk) 
        root.obr = imgtk
        nRet = self.obj_cam.MV_CC_FreeImageBuffer(stOutFrame)
        if self.b_exit == True:
            if img_buff is not None:
                del img_buff
            if buf_cache is not None:
                del buf_cache
            break