要解决表格识别OCR准确性问题,可以采用以下方法:
import cv2
def image_preprocessing(image):
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
blur = cv2.GaussianBlur(gray, (5, 5), 0)
thresh = cv2.threshold(blur, 0, 255, cv2.THRESH_BINARY_INV + cv2.THRESH_OTSU)[1]
return thresh
image = cv2.imread('table_image.jpg')
preprocessed_image = image_preprocessing(image)
import pytesseract
def ocr(image):
text = pytesseract.image_to_string(image, lang='eng', config='--psm 6')
return text
text = ocr(preprocessed_image)
import cv2
import pytesseract
def table_detection(image):
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
edges = cv2.Canny(gray, 50, 150, apertureSize=3)
lines = cv2.HoughLinesP(edges, 1, np.pi/180, 100, minLineLength=100, maxLineGap=10)
# 根据检测到的直线,计算表格的四个角点坐标并进行透视变换
# ...
return transformed_image
def ocr(image):
text = pytesseract.image_to_string(image, lang='eng', config='--psm 6')
return text
image = cv2.imread('table_image.jpg')
table_image = table_detection(image)
text = ocr(table_image)
以上是几种常见的解决表格识别OCR准确性问题的方法,可以根据具体情况选择合适的方法或组合多种方法进行实现。