opencv
(from GStreamer Bad Plug-ins)| Name | Classification | Description | 
|---|---|---|
| cameracalibrate | Filter/Effect/Video | Performs camera calibration by having it point at a chessboard pattern using upstream/downstream cameraundistort | 
| cameraundistort | Filter/Effect/Video | Performs camera undistort | 
| cvdilate | Transform/Effect/Video | Applies cvDilate OpenCV function to the image | 
| cvequalizehist | Transform/Effect/Video | Applies cvEqualizeHist OpenCV function to the image | 
| cverode | Transform/Effect/Video | Applies cvErode OpenCV function to the image | 
| cvlaplace | Transform/Effect/Video | Applies cvLaplace OpenCV function to the image | 
| cvsmooth | Transform/Effect/Video | Applies cvSmooth OpenCV function to the image | 
| cvsobel | Transform/Effect/Video | Applies cvSobel OpenCV function to the image | 
| cvtracker | Filter/Effect/Video | Performs object tracking on videos and stores it in video buffer metadata. | 
| dewarp | Filter/Effect/Video | Dewarp fisheye images | 
| disparity | Filter/Effect/Video | Calculates the stereo disparity map from two (sequences of) rectified and aligned stereo images | 
| edgedetect | Filter/Effect/Video | Performs canny edge detection on videos and images. | 
| faceblur | Filter/Effect/Video | Blurs faces in images and videos | 
| facedetect | Filter/Effect/Video | Performs face detection on videos and images, providing detected positions via bus messages | 
| grabcut | Filter/Effect/Video | Runs Grabcut algorithm on input alpha. Values: BG=0, FG=1, PR_BG=2, PR_FGD=3; NOTE: larger values of alpha (notably 255) are interpreted as PR_FGD too. IN CASE OF no alpha mask input (all 0's or all 1's), the 'face' downstream event is used to create a bbox of PR_FG elements. IF nothing is present, then nothing is done. | 
| handdetect | Filter/Effect/Video | Performs hand gesture detection on videos, providing detected hand positions via bus message and navigation event, and deals with hand gesture events | 
| motioncells | Filter/Effect/Video | Performs motion detection on videos and images, providing detected motion cells index via bus messages | 
| opencvtextoverlay | Filter/Effect/Video | Write text on the top of video | 
| retinex | Filter/Effect/Video | Multiscale retinex for colour image enhancement | 
| segmentation | Filter/Effect/Video | Create a Foregound/Background mask applying a particular algorithm | 
| skindetect | Filter/Effect/Video | Performs non-parametric skin detection on input | 
| templatematch | Filter/Effect/Video | Performs template matching on videos and images, providing detected positions via bus messages. | 
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