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NXTCam V2 blob array sort order
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NXTCam V2 blob array sort order
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Rookie  Joined: Sun Jun 17, 2012 11:18 am Posts: 26 
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 NXTCam V2 blob array sort orderHi Xander,
I have a question. In you driver of NXTCam, is the returned blob array sorted? I have a glance at the source code and it seems to be sorted in DESCENDING order of blob size. Am I right? |
| Tue Feb 19, 2013 2:47 am |
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Rookie Joined: Sun Jun 17, 2012 11:18 am Posts: 26
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Re: Getting drivers working for NXTCam V2 Besides, I think there's a bug in the driver.
In line 218 of "drivers/mindsensors-nxtcam.h", a "-" seems mistyped as "*". blobs[_i].size = abs(blobs[_i].x2 - blobs[_i].x1) * abs(blobs[_i].y2 * blobs[_i].y1); //I think here's a bug blobs[_i].size = abs(blobs[_i].x2 - blobs[_i].x1) * abs(blobs[_i].y2 - blobs[_i].y1); //It should be like this |
| Tue Feb 19, 2013 4:17 am |
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Moderator   Joined: Wed Mar 05, 2008 8:14 am Posts: 2864 Location: Rotterdam, The Netherlands
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Re: NXTCam V2 blob array sort order The blobs are indeed sorted, with the largest one being at index 0. Thanks for the bug report! That is indeed a mistake.
= Xander _________________ | Some people, when confronted with a problem, think, "I know, I'll use threads," | and then two they hav erpoblesms. (@nedbat) | My Blog: I'd Rather Be Building Robots | ROBOTC 3rd Party Driver Suite: [Project Page] |
| Tue Feb 19, 2013 5:40 am |
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