python Programming Glossary: cv2.cvtcolor

OpenCV dot target detection not finding all targets, and found circles are offset

http://stackoverflow.com/questions/10404062/opencv-dot-target-detection-not-finding-all-targets-and-found-circles-are-offse

cv2.destroyAllWindows im cv2.imread 'small_test.jpg' gray cv2.cvtColor im cv2.COLOR_BGR2GRAY #I've tried blur bw tr... all give me..

Does anyone have any examples of using OpenCV with python for descriptor extraction?

http://stackoverflow.com/questions/10799625/does-anyone-have-any-examples-of-using-opencv-with-python-for-descriptor-extract

extract descriptors import cv2 img cv2.imread im1.jpg img2 cv2.cvtColor img cv2.COLOR_BGR2GRAY surf cv2.FeatureDetector_create 'SURF'.. using Python 2.7 and OpenCV 2.4. im2 cv2.imread imgPath im cv2.cvtColor im2 cv2.COLOR_BGR2GRAY surfDetector cv2.FeatureDetector_create..

OpenCV 2.4.1 - computing SURF descriptors in Python

http://stackoverflow.com/questions/10984313/opencv-2-4-1-computing-surf-descriptors-in-python

cv2.imread 'messi4.jpg' # Convert them to grayscale imgg cv2.cvtColor img cv2.COLOR_BGR2GRAY # SURF extraction surf cv2.SURF kp descritors.. keypoints template cv2.imread 'template.jpg' templateg cv2.cvtColor template cv2.COLOR_BGR2GRAY keys desc surf.detect templateg..

http://stackoverflow.com/questions/13379909/compare-similarity-of-images-using-opencv-with-python

armchair.jpg # Convert them to grayscale imgg cv2.cvtColor img cv2.COLOR_BGR2GRAY # SURF extraction surf cv2.FeatureDetector_create.. similar keypoints template cv2.imread modelImage templateg cv2.cvtColor template cv2.COLOR_BGR2GRAY keys surf.detect templateg keys..

Python Opencv SolvePnP yields wrong translation vector

http://stackoverflow.com/questions/14515200/python-opencv-solvepnp-yields-wrong-translation-vector

cv2.cornerSubPix img corners 5 5 1 1 term if debug_dir vis cv2.cvtColor img cv2.COLOR_GRAY2BGR cv2.drawChessboardCorners vis pattern_size..

Simple Digit Recognition OCR in OpenCV-Python

http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python

np import cv2 im cv2.imread 'pitrain.png' im3 im.copy gray cv2.cvtColor im cv2.COLOR_BGR2GRAY blur cv2.GaussianBlur gray 5 5 0 thresh.. im cv2.imread 'pi.png' out np.zeros im.shape np.uint8 gray cv2.cvtColor im cv2.COLOR_BGR2GRAY thresh cv2.adaptiveThreshold gray 255..

writing robust (color and size invariant) circle detection with opencv (based on Hough transform or other features)

http://stackoverflow.com/questions/9860667/writing-robust-color-and-size-invariant-circle-detection-with-opencv-based-on

250 200 200 orig cv2.imread c.jpg img orig.copy img2 cv2.cvtColor img cv2.COLOR_BGR2GRAY detector cv2.FeatureDetector_create 'MSER'.. h w orig.shape 2 vis np.zeros h w 2 5 np.uint8 vis cv2.cvtColor vis cv2.COLOR_GRAY2BGR vis h w orig vis h w 5 w 2 5 img cv2.imshow..