我想预处理图像
以便只保留内部矩形段（即删除周围的背景）。但我没有得到正确的结果，显示为
.
为了我。
代码很简单：
def labelim(img):
#labeling image
gray = rgb2gray(img) #translate rgb to gray
val = filters.threshold_local(gray,5)
mask = gray > val
clean_border = segmentation.clear_border(mask)
labeled = label(clean_border)
signle_labeled = np.where(labeled == 0,labeled, 1)#ensure all assigned label return as 1.
return single_labeled
def crop_img(img, labeled):
cropped_images = []
pad = 20
for region in regionprops(labeled):
if region.area < 2000:
continue
minr,minc,maxr,maxc = region.bbox
cropped_images.append(gray[minr-pad:maxr+pad, minc-pad:maxc+pad])
for c, cropped_image in enumerate(cropped_images):
cropim = cropped_image
return cropim
labeled = labelim(img)
cropped_image = crop_img(img, labeled)
测试代码适用于我的另一张图像，但不适用于大多数图像。感谢您的任何帮助/建议。