Intel® Integrated Performance Primitives
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Misleading histogram example

Gramkow__Claus
Beginner
‎09-18-2018 12:24 AM
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The example given for the use of histograms (https://software.intel.com/en-us/ipp-dev-reference-histogram) seems misleading. The upper limit is set to 255 and the criterion for an intensity to belong in a bin is stated to be pLevels<=pSrc(x, y)<pLevels(k+1). Therefore, if the randomized image contains the value 255, the sum of frequencies will not reach 64 = 8x8, which very much seems to be the intention of the example.

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Adriaan_van_Os
New Contributor I
‎09-18-2018 10:26 PM
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See the thread "ippiHistogram_8u_C1R problem" https://software.intel.com/en-us/forums/intel-integrated-performance-primitives/topic/676143 and my comment on it. There never was a reply.

Regards,

Adriaan van Os

 

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Chao_Y_Intel
Moderator
‎09-20-2018 08:29 PM
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thanks for reporting this issue. I tracked in our bug database, so we can fix it in the future release. regards, Chao
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