python - OpenCV 错误：contourArea 中的断言失败 (contour.checkVector(2) >= 0 && (contour.depth() == CV_32F || contour.depth() == CV

问题描述

这是虚拟更衣室的代码所以基本上使用 ubuntu 12.04、python 2.7.3、gtk2 和 opencv 2 运行此代码。它去除背景屏幕，在几乎任何光线条件下检测 T 恤，替换 T 恤颜色。它被写来替换衬衫和衬衫上的设计。它适用于绿色背景中的蓝色衬衫。

在运行代码时，我发现以下错误 -

> **OpenCV Error: Assertion failed (contour.checkVector(2) >= 0 && (contour.depth() == CV_32F || contour.depth() == CV_32S)) in contourArea, file /build/buildd/opencv-2.3.1/modules/imgproc/src/contours.cpp, line 1673**
Traceback (most recent call last):
  File "vdr/main.py", line 179, in display_frame
    self.final=self.getOutput_frames()
  File "vdr/main.py", line 224, in getOutput_frames
    res=self.replace.replace_design(cntr,self.p_mat, self.design_template, res)
  File "vdr/color_replace.py", line 49, in replace_design
    area.append(cv2.contourArea(cntr[i].astype('int')))
cv2.error: /build/buildd/opencv-2.3.1/modules/imgproc/src/contours.cpp:1673: error: (-215) contour.checkVector(2) >= 0 && (contour.depth() == CV_32F || contour.depth() == CV_32S) in function contourArea

在代码中，检测 T 恤的轮廓存在一些问题。

getOutput_frames 的 main.py 中的代码如下 -

        def getOutput_frames(self):
            if TEST_MODE:
               _,frame=self.vid.read() #NOTE: Testing without camera. uncomment this to feed from camera.
            else:
                frame=self.v.outFrame() #NOTE: feeding from Camera.

            self.norm.getRGB(frame) #input to Normalized RGB

            norm_rgb=self.norm.normalized() #normalized RGB
            print 'Got normalized RGB '       
            rgb_planes=self.v.imagePlanes(norm_rgb)

            self.back.loadBackground()
            self.back.getFrames(rgb_planes[1])
            self.back.subtract_back(norm_rgb)

            subtracted=self.back.remove(frame)
            print 'background subtracted now'

            self.tshirt.getFrames(norm_rgb)
            mask,cntr=self.tshirt.detect_shirt()
            print 'found tshirt'

            self.replace.getFrames(subtracted,mask)

            res=self.replace.replace_color(self.color)

            if self.design is not 7:
                res=self.replace.replace_design(cntr,self.p_mat, self.design_template, res)

            #replace.replace_design(cntr, p_mat,design_template,res)

            #cv2.imshow("subtracted", res)

            return res

在 tshirt.py 中，detectshirt 的代码如下 -

    def detect_shirt(self):


              #self.dst=cv2.inRange(self.norm_rgb,np.array([self.lb,self.lg,self.lr],np.uint8),np.array([self.b,self.g,self.r],np.uint8))
             self.dst=cv2.inRange(self.norm_rgb,np.array([20,20,20],np.uint8),np.array([255,110,80],np.uint8))
            cv2.threshold(self.dst,0,255,cv2.THRESH_OTSU+cv2.THRESH_BINARY)
            fg=cv2.erode(self.dst,None,iterations=2)
            #cv2.imshow("fore",fg)  
            bg=cv2.dilate(self.dst,None,iterations=3)
            _,bg=cv2.threshold(bg, 1,128,1)
            #cv2.imshow("back",bg)

            mark=cv2.add(fg,bg)
            mark32=np.int32(mark)
            cv2.watershed(self.norm_rgb,mark32)
            self.m=cv2.convertScaleAbs(mark32)
            _,self.m=cv2.threshold(self.m,0,255,cv2.THRESH_BINARY+cv2.THRESH_OTSU)
            #cv2.imshow("final_tshirt",self.m)

           cntr,h=cv2.findContours(self.m,cv2.cv.CV_RETR_EXTERNAL,cv2.cv.CV_CHAIN_APPROX_SIMPLE)


            return self.m,cntr

在 color_replace.py 中，replace_design 的代码如下

         def replace_design(self,cntr,p_mat,design_template,input_image):
                area=list()

                for i in range(len(cntr)):

                    area.append(cv2.contourArea(cntr[i].astype('int')))

                max_area=max(area)

                for i in range(len(area)):
                    if max_area==area[i]:
                        index=i
                mom=cv2.moments(cntr[index].astype('int'))
                #print mom
                x=mom['m10']
                y=mom['m01']
                cx=int(x/max_area)
                cy=int(y/max_area)
                #print 'center-X',cx
                #print 'center-Y',cy

                rect=cv2.boundingRect(np.array(cntr[index],np.float32))

                x=rect[0]
                y=rect[1]
                w=rect[2]
                h=rect[3]

                q=np.array([
                            [x+w/3,(y+h)/3],
                            [x+w/2,(y+h)/3],
                            [x+w/2,y+h/3],
                            [x+w/3,y+h/3]
                       ],np.float32)


                mat=cv2.getPerspectiveTransform(p_mat,q)

                   dst=cv2.warpPerspective(design_template,mat(config.width,config.height))


                temp=cv2.cvtColor(input_image,cv2.cv.CV_BGR2BGRA)
                temp=cv2.addWeighted(temp,1.0,dst,1.0,1.0)       
                res=cv2.cvtColor(temp,cv2.cv.CV_BGRA2BGR)

                return res

你能帮我解决这个错误吗？整个代码可在虚拟更衣室的整个代码上找到

标签： pythonopencv

python - OpenCV 错误：contourArea 中的断言失败 (contour.checkVector(2) >= 0 && (contour.depth() == CV_32F || contour.depth() == CV_32S))

问题描述

解决方案

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