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fix luminance computation

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This commit is contained in:
Tim Kuipers 2019-05-20 12:08:16 +02:00
parent a376d0e4d1
commit b3d7887d4d
1 changed files with 2 additions and 2 deletions
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4
plugins/ImageReader/ImageReader.py
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@ -99,8 +99,8 @@ class ImageReader(MeshReader):
for x in range(0, width): for x in range(0, width):
for y in range(0, height): for y in range(0, height):
qrgb = img.pixel(x, y) qrgb = img.pixel(x, y)
avg = float(qRed(qrgb) + qGreen(qrgb) + qBlue(qrgb)) / (3 * 255) luminance = (0.2126 * qRed(qrgb) + 0.7152 * qGreen(qrgb) + 0.0722 * qBlue(qrgb)) / 255 # fast computation ignoring gamma
height_data[y, x] = avg height_data[y, x] = luminance
Job.yieldThread() Job.yieldThread()