This Function Intra_RECONS preforms the Intra Re-Construction, also known as Spatial Prediction, in image "im_recons"'s current block,(i,j) of size N. The function implements all modes. Which ever mode has earlier been selected,That mode's reconstruction is performed. The function returns the reconstructed block
I and J are pixel numbers, N is the block size
This function is used for H.264 video format encoding and decoding
Santhana Raj (2021). Intra Prediction Re-Construction of Image in a video frame (https://www.mathworks.com/matlabcentral/fileexchange/47797-intra-prediction-re-construction-of-image-in-a-video-frame), MATLAB Central File Exchange. Retrieved .
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