I want a one matlabe function that can compare between two images by shape please help

i dont have

[Joseph Cheng]

do you have an example of the images you are trying to compare? How complex are the images?

[baki dmn]

I want to use the form to say whether the two image is the same or not and to rate rassemblance

[Walter Roberson]

baki dmn commented "I want to compare between two images after Detected her shapes"

[Walter Roberson]

So the input will be pictures of mold and mildew on walls, and the purpose is to identify which of the 11000 Christian saints some patten in the picture resembles?

[Image Analyst]

What does "rate rassemblance" mean when you are comparing the shapes (i.e. rows and columns and number of color channels or slices)?

[baki dmn]

otherwise, the entry will be image Detected (shape) and the results will be a percentage of similarity

[Walter Roberson]

baki dmn commented "I mean the similarity teax"

[Walter Roberson]

What is a similarity teax ?

How do you measure the similarity of two shapes? Their area? Their color? Their eccentricity? Their Euler Number?

Consider

The kite shown can be divided into two triangles, horizontally, with the upper triangle being much smaller than the lower triangle. If I reduce the height of the upper triangle further, I could get something that looks similar to a triangle but which does have four distinct sides. Would that be considered more similar to a triangle because it "looks" almost like one, or would it be considered more similar to a rectangle because it would have four sides? Are the "features" (such as "four sides") the important part, or is the "mass distribution" the important part? Is a long ellipse more similar to a circle or to a line?

Answer 1

[Walter Roberson]

isequal(size(FirstImage), size(SecondImage))

In MATLAB, all images are rectangular or cuboid.

Answer 2

[Image Analyst]

Perhaps you mean morphometrics: http://en.wikipedia.org/wiki/Morphometrics but I really have almost no idea what you might want. Do you want the shape of the image itself (like aspect ratio of the rectangle, and number of rows and columns), or the shape of things shown in the image?