Draw a binary image

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Anna 2013-8-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/85976-draw-a-binary-image

评论： Image Analyst 2022-12-2

I want to draw an image of vertical stripes using the pattern 11001100111000. If 1 represents a black bar and 0 represents a white bar, how can I draw a black and white image using black with an intensity value of 0 and white with an intensity value of 1? Assume the image is 100 pixels long and assume 1 pixel is 1 bar.

An example of a code would be great, thanks.

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Jan 2013-8-30

How could the image have 100 pixels with one pixel per bar, if the pattern has 14 elements only?

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回答（3 个）

Iain 2013-8-30

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在 MATLAB Online 中打开

 image_i_want = [1 1 0 0 1 1 0 0 1 1 1 0 0 0 ...put in the rest of your pattern... ];
 imagesc(image_i_want)

You probably want a more complicated answer...

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Muthu Annamalai 2013-8-30

编辑：Muthu Annamalai 2013-8-30

I'll just say, augment the code from @Iain with,

>> colormap gray >> imagesc(image_i_want)

@Anna if you want more control of rectangle objects, borders, shading, filling etc, look at http://www.mathworks.com/help/matlab/ref/rectangle.html to get your b/w images.

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Image Analyst 2013-8-30

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/85976-draw-a-binary-image#answer_95539

在 MATLAB Online 中打开

Try this:

desiredOutputColumns = 640; % Whatever....
desiredOutputRows = 480; % Whatever.....
pattern = [1,1,0,0,1,1,0,0,1,1,1,0,0,0];
stripeImage = imresize(pattern, [desiredOutputRows, desiredOutputColumns], 'nearest');
imshow(stripeImage, [])

I'm not sure if you want 0 to be black and 1 to be white, or vice versa - your message was ambiguous on tat point. Anyway, it's trivial to adapt the above code.