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Results tagged with image-processing
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user 4539
Questions on the image processing capabilities implemented in Mathematica.
11
votes
How to blend two photos in Mathematica?
ImageAdd does the job. Blend allows you to adjust the blending level.
ImageAdd[tiger, background]
- 5,690
7
votes
Accepted
How to make a cleaner copy out of a blurry text image before OCR?
Level adjustments can be done with Mathematica using the ImageAdjust function.
But I think Binarizeis good enough for the case you presented. The results are pretty close.
img = Import["https://i.ss …
- 5,690
7
votes
How to track objects in video
Here is an example how to get the rectangle coordinates
First we extract the rectangles that don't touch the borders with
img = frames[[1]];
rec =
SelectComponents[ColorNegate@img, "AdjacentBorde …
- 5,690
5
votes
Why ColorReplace does not follow the rules specified?
What you want to do can be done way easier:
i = Binarize@Import["https://i.sstatic.net/ZDeYq.jpg"];
Colorize[MorphologicalComponents@i,
ColorRules -> {1 -> Red, 2 -> Blue, 3 -> Green, 4 -> Yellow}] …
- 5,690
13
votes
1
answer
3k
views
ImageTransformation: polar to cartesian
I am working on something that requires the polar transformation of some images. I implemented this transformation with ImageTransformation:
img = Import["https://i.sstatic.net/9cV4T.jpg"]
{cente …
- 5,690
20
votes
1
answer
632
views
Segmentation of sunspots
I recently went for a walk with my camera and snapped a few pictures of the sun. The pictures didn't turn out too well, but this was to be expected without a telescope. I thought it might be a nice ex …
- 5,690
7
votes
2
answers
426
views
Efficient Lloyd Sampling of Images
I want to sample a grayscale image so that every voronoi cell contains approximately the same total intensity using lloyd sampling.
My current code is kind of slow and I was hoping for some advice to …
- 5,690
11
votes
Programmatic approach to HDR photography
Exposure fusion is often a powerful alternative to the reconstruction of HDR images if we are only interested in the tone mapped result. HDR reconstructions are often not possible because exposure tim …
- 5,690