我正在尝试使用python和opencv构建一个手写识别系统.字符的识别不是问题,而是分割.我成功了:
但我无法在文档中分割不同的行.我尝试对轮廓进行排序(以避免线分割并仅使用分词),但它不起作用.我使用以下代码来分割手写文档中包含的单词,但它返回不按顺序的单词(它以从左到右的排序方式返回单词):
import cv2
import numpy as np
#import image
image = cv2.imread('input.jpg')
#cv2.imshow('orig',image)
#cv2.waitKey(0)
#grayscale
gray = cv2.cvtColor(image,cv2.COLOR_BGR2GRAY)
cv2.imshow('gray',gray)
cv2.waitKey(0)
#binary
ret,thresh = cv2.threshold(gray,127,255,cv2.THRESH_BINARY_INV)
cv2.imshow('second',thresh)
cv2.waitKey(0)
#dilation
kernel = np.ones((5,5), np.uint8)
img_dilation = cv2.dilate(thresh, kernel, iterations=1)
cv2.imshow('dilated',img_dilation)
cv2.waitKey(0)
#find contours
im2,ctrs, hier = cv2.findContours(img_dilation.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
#sort contours
sorted_ctrs = sorted(ctrs, key=lambda ctr: cv2.boundingRect(ctr)[0])
for i, ctr in enumerate(sorted_ctrs):
# Get bounding box
x, y, w, h = cv2.boundingRect(ctr)
# Getting ROI
roi = image[y:y+h, …Run Code Online (Sandbox Code Playgroud)