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2016-02-21 12:34:18 -0600 | commented answer | Estimate white background OTSU thresholding won't work perfectly with illumination, i.e. if some drawing is light on a photo due to illumination, it will be filtered out by OTSU thresholding since it will be done in grayscale mode. Any other ideas? |
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2016-02-10 12:54:01 -0600 | commented answer | Estimate white background @jeanpat, unfortunately the operation above makes resulting image black. I believe this is due to erosion. But overall approach might work just fine if I can use reverse-erosion... Playing with it. |
2016-02-10 10:14:01 -0600 | commented answer | Estimate white background If I convert image to grayscale, I'll loose an ability to detect outliers, but let me take a closer look to this method... |
2016-02-10 09:36:16 -0600 | asked a question | Estimate white background Hi, I have image with white uneven background (due to lighting). I'm trying to estimate background color and transform image into image with true white background. For this I estimated white color for each 15x15 pixels block based on its luminosity. So I've got the following map (on the right): Now I want to interpolate color so it will be more smooth transition from 15x15 block to neighboring block, plus I want it to eliminate outliers (pink dots on left hand side). Could anyone suggest good technique/algorithm for this? (Ideally within OpenCV library, but not necessary) |
2016-01-24 13:40:13 -0600 | asked a question | Output Mat object in XCode7.2 debugger console Hi, How can I inspect values of the Mat object in XCode 7.2 debugger console (lldb)? I've tried commands like UPDATE
simple Thank you. |
2016-01-21 09:59:42 -0600 | asked a question | Iterate over multiple vectors of uneven Mat Hi, I have two vectors with uneven Mat I need to iterate over both of them at the same time and sum them up. I've tried this: But it gives me an error |
2014-02-14 11:40:58 -0600 | asked a question | How to convert Mat to CV_16SC3 I'm trying to feed Mat images to Blender class, but I receive the following error:
I receive the images form video stream, not sure why it is of incorrect type (I don't pre-process images after |
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2014-02-14 10:28:33 -0600 | asked a question | Problem with Blender Hi, I'm trying to use Blender (from stitching_details.cpp) example:
But on a second line I've got the following error during runtime:
What I'm doing wrong? I use XCode 5.0.2 and OpenCV 2.4 |