Error Concealment | JPEG | MPEG-4 | Wavelet | YUV

Hi all,

I am new member to this group. Actually, I have read a data file of 
an image from its sub header stored the data in a buffer.*imdata is a 
pointer to the buffer for data. The data size is 100x100x81 and no. 
of bytes per pixel is 4 bytes and the format type is float. Now I 
have to take the center slice of this 3d image and locate ROI (region 
of interest) and find mean within this region.
My question is how to access the center slice (40th slice) through 
this pointer imdata. Thanks in advance.

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