Search found 7 matches

by oliver.hardt
Sun May 11, 2014 7:26 pm
Forum: Rich Media
Topic: Extracting Video Frames
Replies: 2
Views: 2376

Extracting Video Frames

Hello: I would like to analyze a video frame-by-frame. In the forums I found an approach in which snapshots are taken from a running video. Based on this idea, I tried to advance the movie frame by frame (play step forward lClip; see below). This has the disadvantage that it is rather slow because a...
by oliver.hardt
Tue Apr 29, 2014 12:51 pm
Forum: Talking LiveCode
Topic: Populate an option menu with video sources
Replies: 7
Views: 1151

Re: Populate an option menu with video sources

Has there been any solution to this issue? I am currently also struggling with the latest LiveCode version to see the video coming in via USB3.0. The revVideoGrabDialog does not work at all -- this command does not trigger display of a dialog that allows you to select an input source, as explained i...
by oliver.hardt
Tue Oct 16, 2012 3:41 pm
Forum: Rich Media
Topic: video recording
Replies: 3
Views: 7730

Re: video recording

Klaus: I also had this idea before I posted my inquiry here. As there is nothing enlightening, I thought it would be adequate to ask the forum.
Best,
Olli.
by oliver.hardt
Sun Oct 14, 2012 11:06 pm
Forum: Rich Media
Topic: video recording
Replies: 3
Views: 7730

video recording

Hello I would like to write a stack that allows me to record videos. An external video camera will be plugged into the Mac via USB (or thunderbolt), and the feed this camera provides will be processed with a stack. There is this example stack that comes with LiveCode (Video Capture.rev). But it simp...
by oliver.hardt
Fri Oct 29, 2010 9:35 pm
Forum: Research and Post Secondary
Topic: analyzing video images in order to track animal movement
Replies: 4
Views: 4112

Re: analyzing video images in order to track animal movement

Hello Bernd: Thank you for getting back to me regarding this issue. Indeed, I am very experienced with coding in runtime, but i am rather unexperienced when it comes to analyzing image data, using any programming language. Here are some technical data on the video files, taken from quicktime movie i...
by oliver.hardt
Fri Oct 29, 2010 1:36 pm
Forum: Research and Post Secondary
Topic: Developing cognitive tests/tasks for training
Replies: 3
Views: 4799

Re: Developing cognitive tests/tasks for training

I've been programming experimental tasks as these for 10 years using first Pascal on the Apple Macintosh, and then Hypercard predominantly due to developing time, and for a couple of years now in runrev. In the area of neuropsych testing, I implemented a version of the Wisconsin Card Sorting Test. A...
by oliver.hardt
Fri Oct 29, 2010 3:05 am
Forum: Research and Post Secondary
Topic: analyzing video images in order to track animal movement
Replies: 4
Views: 4112

analyzing video images in order to track animal movement

hello: i record animal behaviour on video. specifically, individual rats are placed in a square box in which they will find some stationary objects. I would like to track the rat's movement. Thus, the only thing that changes from image to image is the location of the animal, nothing else moves. The ...

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