File:Equalized Histogram.svg
Size of this PNG preview of this SVG file: 712 × 470 pixels. Other resolutions: 320 × 211 pixels | 640 × 422 pixels | 1,024 × 676 pixels | 1,280 × 845 pixels | 2,560 × 1,690 pixels.
Original file (SVG file, nominally 712 × 470 pixels, file size: 61 KB)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description | Greyscale frequency histogram of Equalized Hawkes Bay NZ.jpg. X-axis shows image intensity, y-axis number of pixels with that intensity. Black curve shows cumulative histogram. |
| Date | |
| Source | self-made based on Image:Equalized Histogram.gif file by Konstable |
| Author | Jarekt |
| SVG development | |
| Source code | MATLAB codeI = rgb2gray(imread('Unequalized_Hawkes_Bay_NZ.jpg'));
h = hist(double(I(:)),0:255);
map = cumsum(h)/prod(size(I));
J = 255*map(I+1);
[h x]=hist(double(J(:)),0:255);
map = cumsum(h)/prod(size(J));
figure(1)
hold on
bar(x, h, 'r');
plot(x, 30000*map, 'k')
xlim([0 256]);
ylim([0 31000]);
plot2svg('Equalized Histogram.svg')
|
Licensing
|
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:57, 4 April 2008 | | 712 × 470 (61 KB) | Jarekt | == Summary == {{Information |Description=Greyscale frequency histogram of Equalized Hawkes Bay NZ.jpg. X-axis shows image intensity, y-axis number of pixels with that intensity. Black curve shows cumulative histogram |
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