# Answer to Question #38701 in Other Engineering for amal jose

Question #38701

what is patch extraction in matlab?

Expert's answer

Image patches mean sub images. When an image is divided into disjoint or overlapping sub-parts, these sub-parts are called patches

of that image. In image pre-processing, it is useful in feature extraction. For example, a 100X100 image can be divided into ten

10X10 patches.

In MATLAB, every digital image is considered as a matrix with defined maximum number of rows and columns. The 100X100 image is a

matrix of 100 rows and 100 columns. When this matrix is divided into sub matrices, each sub matrix is termed as a patch of the

original. The code for dividing a 100X100 image into the first 10X10 patch would be:

Patch1 = full_image (1:10, 1:10);

of that image. In image pre-processing, it is useful in feature extraction. For example, a 100X100 image can be divided into ten

10X10 patches.

In MATLAB, every digital image is considered as a matrix with defined maximum number of rows and columns. The 100X100 image is a

matrix of 100 rows and 100 columns. When this matrix is divided into sub matrices, each sub matrix is termed as a patch of the

original. The code for dividing a 100X100 image into the first 10X10 patch would be:

Patch1 = full_image (1:10, 1:10);

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## Comments

Assignment Expert06.02.14, 17:59Dear Amal Jose,

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amal jose06.02.14, 16:11excellent service....thanks for the help..its really helpfull to me...

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