python - Extracted bounding image is very small

Question

I have this code for detecting text on an image and bounding it by a green rectangle and extract each bounding text into a separate image, I have done this step but when it is generated and I try to open the image it is very small I cannot see it, I tried to apply resize but not works. please help me.

    img = cv2.imread(IMAGE_PATH)
    copy = img.copy()
    ROI_number = 0

for detection in result: 
    top_left = tuple([int(val) for val in detection[0][0]])
    bottom_right = tuple([int(val) for val in detection[0][2]])
    #text = detection[2]
    #font= cv2.FONT_HERSHEY_SIMPLEX
    img = cv2.rectangle(copy, top_left, bottom_right, (36,255,12), 2)
    ROI = copy[top_left, bottom_right]
    img2 = cv2.resize(ROI, dsize=(0,0), fx=5, fy=5)
    cv2.imwrite('ROI_{}.jpg'.format(ROI_number), ROI)
    #img = cv2.putText(img,text,(20,spacer), font, 1,(0,255,0),2,cv2.LINE_AA)
    ROI_number += 1
#plt.figure(figsize=(30,30))    
plt.imshow(img)
plt.show
cv2.imshow('copy', copy)
cv2.waitKey()

question from:https://stackoverflow.com/questions/65645627/extracted-bounding-image-is-very-small

Answer 1

Your image is small because it is truly small.

But every decent image viewer has zoom that can zoom in and magnify your small image.

Your resize code is not working because you put dim=(0,0) , however it should be None in order fx and fy to work.