I want to create an image using a matrix.

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Nikhil Chourasia 2015-2-11

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https://ww2.mathworks.cn/matlabcentral/answers/177390-i-want-to-create-an-image-using-a-matrix

评论： Nikhil Chourasia 2015-3-10

采纳的回答： Eduardo Márquez

1) Suppose i have a (8x8) matrix and i want this matrix to be converted into image (as shown in below image).

Note that each row of the matrix correspond to the each row of color in the image.

2) Also if i have R,G,B matrix, then how can i create the image (as shown in below image)

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Nikhil Chourasia 2015-3-8

编辑：Nikhil Chourasia 2015-3-8

HEMRAJ thanks for your help. I am able to create image. But the image is too small and only a single strip . I want to create strips of color equivalent to my input no. Below is my code which i used.

Matrix1 =[0 0 0]

Matrix2 =[1 1 1]

Matrix3 =[0 0 0]

[m,n]=size(Matrix1);

my_image=[m,n,3];

my_image(:,:,1)=Matrix1;

my_image(:,:,2)=Matrix2;

my_image(:,:,3)=Matrix3;

imshow(my_image);

Please suggest how i can create image like this

Please note color may vary this is only example of image

Nikhil Chourasia 2015-3-10

Thank U all for your help. I am now able to create image using RGB values. But how can i directly give input of R,G,B values in uint8 instead of double.

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Eduardo Márquez 2015-2-13

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编辑：Eduardo Márquez 2015-2-13

http://www.mathworks.com/help/matlab/ref/imwrite.html

Using:

imwrite(A,'Image.jpg')

where A is a matrix 3D, A(:,:,1) = Red channel, A(:,:,2) = Green Channel, A(:,:,3) = Blue Channel;

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Nikhil Chourasia 2015-3-10

Thank U Eduardo Márquez for your help. I am now able to create image using RGB values. But how can i directly give input of R,G,B values in uint8 instead of double.

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