2020-10-18 13:43:52 -0600 | received badge | ● Notable Question (source) |
2018-07-25 15:42:00 -0600 | received badge | ● Notable Question (source) |
2018-01-10 15:08:18 -0600 | received badge | ● Nice Question (source) |
2016-08-09 08:09:39 -0600 | received badge | ● Popular Question (source) |
2015-11-18 02:48:43 -0600 | received badge | ● Popular Question (source) |
2014-04-08 23:33:59 -0600 | received badge | ● Famous Question (source) |
2013-10-31 15:23:25 -0600 | received badge | ● Notable Question (source) |
2013-08-05 03:21:04 -0600 | received badge | ● Popular Question (source) |
2012-11-26 06:05:05 -0600 | commented answer | getAffineTransform, getPerspectiveTransform or findHomography? Thanks for pointing that out. I got it working using |
2012-11-25 11:46:20 -0600 | asked a question | getAffineTransform, getPerspectiveTransform or findHomography? Following scenario: I've taken an photo for further analysis. The photo contains a sheet of paper. First of all I'm trying to detect the corners of the image. Once I've got them I want to stretch/transform the image so that its corners fit a new Reading the documentation on the above mentioned functions I'm not quite sure what's right for my needs.
Since I'm not sure if it even is the right approach I'm trying, I would love to hear your opinion on this before I try to fix the error. Thanks a lot! |
2012-11-22 18:24:55 -0600 | commented answer | How to create a binary image mat? I'm using this with the Cocoa framework and I'm getting the image mat (or the grayscale mat, tried both) from an UIImage instance. Besides that, I'm applying the threshold like you do. When I print every single pixel's value to the console (as |
2012-11-21 17:53:48 -0600 | commented answer | How to create a binary image mat? I have values like 2, 91, 116, 55, 183, 119, 175, 210, … in there. When I parse the binary mat I do not actually have the grayscale mat anymore. But I think I could keep it to compare it side by side, once it's not in the middle of the night here… ;) Thanks for your assistance anyway! |
2012-11-21 16:37:51 -0600 | commented answer | How to create a binary image mat? Unfortunately, that does not seem to change anything. |
2012-11-21 15:19:22 -0600 | asked a question | How to create a binary image mat? Whats the right way to create a binary image? I'm trying to convert an ordinary image mat to grayscale and apply a threshold afterwards like this: Shouldn't that create a mat that does only have 0s and 255s (as What am I doing wrong? Thanks a lot! |
2012-11-19 05:17:34 -0600 | received badge | ● Student (source) |
2012-11-19 04:23:08 -0600 | received badge | ● Supporter (source) |
2012-11-19 04:23:08 -0600 | received badge | ● Scholar (source) |
2012-11-19 04:22:58 -0600 | commented answer | Histogram: Count black pixel per column Thanks, Michael. The second example does crash with OpenCV Error: Bad argument on the line histogram += …. But the first one does work fine for me. Thank you! |
2012-11-16 10:24:28 -0600 | asked a question | Histogram: Count black pixel per column Hi guys, I'm just getting started with OpenCV and I was wondering if it's possible, using calcHist, to create a histogram that counts all the black pixel per column in a binary image. By column I mean every single pixel column of the image, so that I would use image.width bins. Every bin should then have a value like 60, 80, 1000, whatever, depending of how many of the pixels in that column were black. Is there a way to use the OpenCV method or do I have to implement it myself? Thanks a lot! |