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Fix ImageThresholder::OtsuThresholdRectToPix for OpenCL

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The ThresholdRectToPix OpenCL kernel only supports 4 channels.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
This commit is contained in:
Stefan Weil 2018-08-01 22:49:28 +02:00
parent c044b8c916
commit 8af80b7ba6
1 changed files with 2 additions and 2 deletions
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4
src/ccmain/thresholder.cpp
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@ -273,8 +273,8 @@ void ImageThresholder::OtsuThresholdRectToPix(Pix* src_pix,
// only use opencl if compiled w/ OpenCL and selected device is opencl
#ifdef USE_OPENCL
OpenclDevice od;
if ((num_channels == 4 || num_channels == 1) &&
od.selectedDeviceIsOpenCL() && rect_top_ == 0 && rect_left_ == 0 ) {
if (num_channels == 4 &&
od.selectedDeviceIsOpenCL() && rect_top_ == 0 && rect_left_ == 0) {
od.ThresholdRectToPixOCL((unsigned char*)pixGetData(src_pix), num_channels,
pixGetWpl(src_pix) * 4, thresholds, hi_values,
out_pix /*pix_OCL*/, rect_height_, rect_width_,