CaptureFilterAdd < Main

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---+ Notes on filter_threshold

   * Must have OpenCV 2.0 or a newer version installed.
   * Result image is stored in a folder (locateed in same folder as the source) called test. Please create this folder before running the program.
   * Adjust threshold values accordingly to filter the correct amount
   * Also, adjust the erode parameters accordingly.
   * Change threshold value accordingly: program will truncate everything in the image received from webcam except areas with threshold values between _threshvalue_ and _maxthresh_.
   * Source:   [[%ATTACHURL%/filter_threshold.cpp][filter_threshold.cpp]]: filter_threshold.cpp
   * Makefile: [[%ATTACHURL%/Makefile][Makefile]]: (works on ubuntu 11.10 and later versions.. for previous versions, replace LDLIBS with LDFLAGS).
Example - Path of a robot turning a circle traced by filter_threshold:

*Note:* A white circular disc was mounted on the centre of the robot. This disc was filtered by the program and the rest of the image was truncated.

   
 <img width="640" alt="resultoriginal_100_350.jpg" src="%ATTACHURLPATH%/resultoriginal_100_350.jpg" height="480" />


-- Main.PremNirmal - 2011-08-23

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
EXT	Makefile	r1	manage	0.1 K	2012-05-05 - 20:23	UnknownUser	Makefile (works on ubuntu 11.10 and later versions.. for previous versions, replace LDLIBS with LDFLAGS).
jpg	resultoriginal_100_350.jpg	r1	manage	25.3 K	2011-08-23 - 20:22	UnknownUser
cpp	filter_threshold.cpp	r2 r1	manage	2.4 K	2012-05-05 - 20:22	UnknownUser

Topic revision: r3 - 2012-05-06 - PremNirmal