MATLAB: Image with vertice and faces

facesImage Processing Toolboxpatchvertice

I have an image with vertices and faces. I can show it using patch(). The problem is how to use other functions on it? For example I want to use imsharpen().

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patch() shows a patch in the graphical overlay. imsharpen() wants a digital image - an 2-D array of gray scale values. It has to be an actual image, not a graphical rendering ov some object above a graph. You need to create your synthetic image as a 2-D array of values.

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MATLAB: How to find the difference (in pixels) between two boundaries/countours

You can do number of ways: (Considering the single pixel value, as both section has same pixel value, may have small different)

Manually:

imtool('iamge_file_name');

Move the cursor, where you need the pixel value, it shows the image viewer at the bottom of the app. Note this and find the difference.

2. Authomatically: Using code (Assumed that your contours cover the mid section of the image)

    data=imread('image_file_name');
    [r c d]=size(data);
    diff_pix=data(randi(r),1)-data(round(r/2),round(c/2));

Kalyan Acharjya ?

MATLAB: Overlay Color Information with patch()

patch() objects have an AlphaDataMapping and FaceVertexAlphaData property; between the two you can control the alpha of faces.

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MATLAB: How to find the difference (in pixels) between two boundaries/countours

MATLAB: Overlay Color Information with patch()

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