我有这些图像
enter image description here
enter image description here
我想从这些图像中去除噪声，这样我就可以使用pytesseract将它们转换为文本。噪声只有蓝色，所以我尝试从图像中去除蓝色。仍然没有好的效果。

This is what I did

import cv2
import pytesseract


# Extract the blue channel
blue = img[:, :, 0]

# Apply thresholding to the blue channel
thresh = cv2.threshold(blue, 0, 255, cv2.THRESH_BINARY_INV | cv2.THRESH_OTSU)[1]

# Perform morphological operations to remove noise
kernel = cv2.getStructuringElement(cv2.MORPH_RECT, (1,1))
opening = cv2.morphologyEx(thresh, cv2.MORPH_OPEN, kernel, iterations=7)

# Apply blur to smooth out the image
blur = opening#cv2.medianBlur(opening, 1)

cv2.imwrite("/Users/arjunmalik/Desktop/blur.png",blur)
display("/Users/arjunmalik/Desktop/blur.png")

结果是
enter image description here
OCR结果为FL1S4y。