How extract values from raster for every point for big point vector file

I have big vector file  with about 30000 points. Now I need extract values from ecological rasters for every of the vector points. Problem of the extraction is that some of raster cells includes more than 1 vector points. Using the standard module Extract in Idrisi and creating Definition Image I lose extractions for part of vector points if they are more than 1 points per raster cell. Is it mean that I can not extract values for every point of 30000 in Idrisi and need search other soft for this operation? - or Idrisi has alternative way for this kind of extraction?


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