Question

我运行代码时遇到此错误：

断言失败(mask.size() == imsize && mask.channels() == 1) in histPrepareImages, file /Users/jmeunier28/Downloads/opencv- 3.0.0/modules/imgproc/src/histogram.cpp, line 159

File "/usr/local/lib/python2.7/site-packages/pyimagesearch/rgbhistogram.py", line 16, in describe mask, self.bins, [0, 256, 0, 256, 0, 256])

在pyimagesearch/rgbhistogram.py我试图像这样使用calcHist：

def describe(self, image, mask = None):

        hist = cv2.calcHist([image], [0, 1, 2],
        mask, self.bins, [0, 256, 0, 256, 0, 256])

    hist = cv2.normalize(hist,hist)

    # return out 3D histogram as a flattened array
    return hist.flatten()

然后在我的主脚本中运行：

desc = RGBHistogram([8, 8, 8])

for (imagePath, maskPath) in zip(imagePaths, masksPaths):
    # load the images in the path
    image = cv2.imread(imagePath)
    mask = cv2.imread(maskPath,0) 
    features = desc.describe(image,mask)
    data.append(features)
    target.append(imagePath.split("_")[-2])

图像有形状（142,213,3），面具的形状是（142,213）这是问题的根源吗？我是python的新手，我卸载了numpy和opencv并重新安装它们，这并没有纠正它。我想不出为什么这不能正常工作的任何其他原因。如果有人能指出我正确的方向，我会非常感激！

修改这些图像是不同动物的照片，我写了一个脚本，在这里创建动物的面具图像：

for i in range(imgnum):
    im = cv2.imread(imagePaths[i],0)
    ret,thresh = cv2.threshold(im,127,255,cv2.THRESH_BINARY)
    target = imagePaths[i].split("_")[-2]
    newImg= cv2.imwrite(os.path.join(dirname,target+"_"+str(i)+".jpg"),thresh)

Python openCv calcHist失败，错误代码（-215）

0 个答案: