Specifications

Histogram, Threshold, and Compare Functions
10-9
10
ComputeHisto
Computes the intensity
histogram of an image.
void iplComputeHisto(IplImage* srcImage , IplLUT** lut );
srcImage The source image for which the histogram will be
computed.
lut An array of pointers to LUTs, one pointer for
each channel. Each lookup table should have the
key array fully initialized. The value array will
be filled by this function. (For the
key and value
arrays, see “The IplLUT Structure” above.) The
same LUT can be shared by one or more
channels.
Discussion
The function iplComputeHisto() computes the intensity histogram of an
image. The histograms (one per channel in the image) are stored in the
array
lut containing all the LUTs. The key array in each LUT should be
initialized before calling this function. The
value array containing the
histogram information will be filled in by this function. (For the
key and
value arrays, see “The IplLUT Structure” above.)