How to copy a image region using opencv in python?

by

Both cv.GetSubRect and ROI functions are available in Python, but in old import cv mode or import cv2.cv. ie use cv2.cv.GetSubRect() or cv2.cv.SetImageROI if you are familier with them.

On the other hand, it is simple to set ROI without these functions due to numpy integration in new cv2.

If (x1,y1) and (x2,y2) are the two opposite vertices of plate you obtained, then simply use function:

roi = gray[y1:y2, x1:x2]

that is your image ROI.

So choose whatever suit you.

More Related Contents:

  1. Region of Interest opencv python
  2. Detect text region in image using Opencv
  3. Detect image orientation angle based on text direction
  4. How to define a threshold value to detect only green colour objects in an image with Python OpenCV?
  5. Python OpenCV Color Tracking
  6. How to get the cells of a sudoku grid with OpenCV?
  7. Python OpenCV line detection to detect `X` symbol in image
  8. Finding red color in image using Python & OpenCV
  9. Detect and visualize differences between two images with OpenCV Python
  10. Automatic contrast and brightness adjustment of a color photo of a sheet of paper with OpenCV
  11. Crop Rectangle returned by minAreaRect OpenCV [Python]
  12. How to crop the internal area of a contour?
  13. How to resize an image with OpenCV2.0 and Python2.6
  14. how to remove background of images in python
  15. Equivalent of copyTo in Python OpenCV bindings?
  16. module’ object has no attribute ‘drawMatches’ opencv python
  17. Irregular shape detection and measurement in python opencv
  18. OpenCV & Python – Image too big to display
  19. Add padding to images to get them into the same shape
  20. Square detection in image
  21. Remove spurious small islands of noise in an image – Python OpenCV
  22. Use pytesseract OCR to recognize text from an image
  23. How to clean images before OCR with Python OpenCV?
  24. OpenCV giving wrong color to colored images on loading
  25. how to convert an RGB image to numpy array?
  26. OpenCV Python: cv2.findContours – ValueError: too many values to unpack
  27. How to read a raw image using PIL?
  28. cv2.imshow command doesn’t work properly in opencv-python
  29. Combine 3 separate numpy arrays to an RGB image in Python
  30. Convert opencv image format to PIL image format?

Leave a Comment