This project detect chessboard corners in a video or image and draw it using Opencv functions.

Installing

To compile, see HowToInstall

Pre-compiled binaries (for 32 bits, Ubuntu 10.4 Gstreamer, Opencv 2.2) are also available in the downloads section:

libgstchessfind-0.1.so

Put them into the ~/.gstreamer-0.10/plugins directory (create it if it does not exist yet).

Options

gst-inspect chessfind:

display : Sets whether the detected chessboard should be highlighted in

the output flags: accès en lecture, accès en écriture Boolean. Default: true Current: true

rows : Number of chessboard's rows

flags: accès en lecture, accès en écriture Integer. Range: 4 - 2147483647 Default: 4 Current: 4

columns : Number of chessboard's columns

flags: accès en lecture, accès en écriture Integer. Range: 4 - 2147483647 Default: 6 Current: 6

Example pipelines

With a video : gst-launch -v -m filesrc location=video.ogg ! decodebin ! ffmpegcolorspace ! queue ! chessfind ! queue ! ffmpegcolorspace ! ximagesink