How to open .raw files in matlab?
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Hello,
How will I open my .raw files in matlab?
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Jan
le 21 Avr 2013
Even after the large number of questions for clarifications and a lot of comments, the actual problem does not get clearer. It seems, like our messages do no reach you, Pooja:
It is your turn to find out the details of the format.
We cannot help you, when we have to guess, what you need.
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Image Analyst
le 18 Avr 2013
Pooja, do you have any idea at all ...
- what the lateral size of the image is (number of rows and columns), and
- whether it's grayscale, RGB color or multispectral,
- if color how the red, green, and blue values are positioned (interleaved)
- how many bits (8 or 16 are typical) is the pixel written out
- if there is a header and how long it might be?
Or are you willing to guess at some typical values? You can pass in an array to the fread() function to get back a 2D array.
8 commentaires
Image Analyst
le 21 Avr 2013
As you can see from the '*uint8' or '*uint16' in the fread() statement, it's either 1 or 2, for 8 bit (one byte) or 16 bit (2 bytes) respectively. x_size will be the number of columns, and y_size is the number of rows that you want in your 2D array (which I called oneSlice but you can call rawdata if you want).
Now, notice how your fread() doesn't look like mine because you didn't put in the desired output matrix size ([x_size y_size]) like I did. Why not?
Walter Roberson
le 18 Avr 2013
There are different .raw file formats, different ones for different manufacturers.
2 commentaires
Walter Roberson
le 18 Avr 2013
The most I can seem to find is the commercial product from ledin.com which is a Telemetry toolbox for MATLAB.
I have not checked to see if that handles DELTA-DOR files.
Jan
le 18 Avr 2013
"Raw" means an individually defined binary format usually. Because there are many different formats named "raw", you have to ask the creator how this file has been created and how the format is defined. But it is not reliable to let the forum's users guess, which RAW-format it might be.
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Surendra Maharjan
le 11 Oct 2018
clear; clc; width = 256; height = 256; fileID = fopen('Phase0004.raw','r'); A=fread(fileID,[width height]); fclose(fileID);
The output A is empty. I can not understand why?
zinah n
le 24 Sep 2019
clear; clc;
width = 256;
height = 256;
ccnt=width*height;
fileID = fopen('Phase0004.raw','r');
A=fread(fileID,ccnt,'uint8=>uint8');
fclose(fileID);
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