Question

QWrite a code to show the histogram of ('rice.png') then enhance the result of histogam and
show the image of it.

Q If you convert the image (G) to double form, what you think the result will be?
G=[0 200
255 0]

Answer 1

Write code to show the histogram of ('rice.png') then enhance the result of the histogram and show the image of it.

Ans:

Code to read the png image and to create a histogram of that image:

Note: Used MATLAB for Coding

I = imread('rice.png');
imshow(I)

figure;
imhist(I);

If you convert the image (G) to double form, what you think the result will be?

Ans:

Input image, specified as a numeric scalar, vector, matrix, or multidimensional array. If the Parallel Computing Toolbox is installed, then G can be a gpuArray and im2double converts G on a GPU.

For example:

I1 = im2double(I) converts the intensity image I to double precision, rescaling the data if necessary. I can be a grayscale intensity image, a truecolor image, or a binary image. If the input image is of class double, then the output image is identical.

Remember: The im2double function does not rescale the output when the input image has single or double data type. If your input image is a truecolor image of data type single or double with pixel values outside this range, then you can use the rescale function to scale pixel values to the expected range [0, 1].

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