How to visualize a pixel intensity values into an image or a plot?

Question

Aravind Poolla 2021-2-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/753694-how-to-visualize-a-pixel-intensity-values-into-an-image-or-a-plot

编辑： Aravind Poolla 2021-2-25

Hello

I have a .txt file containing luminance intensity pixel values how can I visualise it in a plot or in any image format. I am ttaching the file below.

Thank you in advance.

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Image Analyst 2021-2-23

How many rows and columns and color channels are in the "image"?

Aravind Poolla 2021-2-23

I think it is a grayscale image and the text file consists of simulation measurement data of pixel intensity values. This txt file is an output Of simulation. The file has a resolution of 1392 by 1040.

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Answer 1

KALYAN ACHARJYA 2021-2-25

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/753694-how-to-visualize-a-pixel-intensity-values-into-an-image-or-a-plot#answer_632699

在 MATLAB Online 中打开

You can use the following function to read a txt file.

readmatrix, readtable, load etc

Example:

data=readmatrix('post_mathworks.txt');
imshow(data);

%or

imshow(uint8(data));

%or

imagesc(data);

Please refer the MATLAB Docs to read about different functions.

Data Details

>> whos data
  Name         Size                 Bytes  Class     Attributes
  data      1040x1393            11589760  double     

Please ensure that the text file in the proper arrangement and alignment of all data elements. You may need to avoid 2 or 3 lines to avoid any headers associated with the file.