I have a data for image recognition using neural networks. The images are in pgm format.how to pre-process that data to get into a suitable matrix in cpp.
Sowmith Reddy
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https://www.mathworks.com/help/deeplearning/pattern-recognition-and-classification.html
hello
Before you think about code, use a grayscale picture (it’ll be easier). Each of the pixels in a grayscale picture has only one value, the gray number value. If you think about pixels as numbers of a region of color, you should get a 2D array. This 2D array is stored in basically a text file. All you have to do is read in the array into an array you create. and regarding your image format pgm please get a look at http://tinyurl.com/pgmfile
good luck
Dear Sowmith,
I suggest you alinks and attached files in topics.
-15 Steps to Implement a Neural Net – code-spot
code-spot.co.za/2009/10/08/15-steps-to-implemented-a-neural-net/
-Basic Neural Network Tutorial : C++ Implementation and Source Code ...
https://takinginitiative.wordpress.com/.../basic-neural-network-tuto...
-Hand Written Character Recognition Using Neural Networks
fr.slideshare.net/.../hand-written-character-recognition-using-neura...
-Classify Patterns with a Neural Network - MATLAB & Simulink
https://www.mathworks.com/.../classify-patterns-with-a-neural-net...
-Features - Neural Network Toolbox - MathWorks
https://www.mathworks.com › ... › Features
Best regards
Hi,
you could use OpenCV (opencv.org) to load the PGM file. Then you could use e.g. the Eigen linear algebra library to represent the image in CPP. There is also a direct conversion method from the OpenCV Mat to Eigen Matrix.
Cheers!
http://opencv.org
http://eigen.tuxfamily.org/
https://forum.kde.org/viewtopic.php?f=74&t=97516#p206289
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