find original coordinate of a point in Cropped image

Asked Jun 27 '19 at 09:05

Active Jun 27 '19 at 09:24

Viewed 768 times

I have an image. Using opencv .selectROI to extract the region of interest without any rotation gives me:

r=cv2.selectROI(myImage)
ROI=[int(r[1]):int(r[1]+r[3]), int(r[0]):int(r[0]+r[2])]

In the ROI new image, if given a point (x_new,y_new) how could i find its coordinate (x,y) in the original image?

edited Jun 27 '19 at 09:24

asked Jun 27 '19 at 09:05

Totally New

2

Well you should know the x,y pos of where your crop took place in the original image, and you know the x,y point within the cropped image, just add them together. – Nick is tired Jun 27 '19 at 09:25
You solved my problem. Thank you so much – Totally New Jul 01 '19 at 05:33

0 Answers0