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omit irrelevant log base

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Tim Kuipers 2019-10-25 10:36:55 +02:00
parent 76a538322d
commit a01f91d4e3
1 changed files with 2 additions and 2 deletions
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4
plugins/ImageReader/ImageReader.py
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@ -129,11 +129,11 @@ class ImageReader(MeshReader):
Job.yieldThread() Job.yieldThread()
if use_transparency_model: if use_transparency_model:
p = 1.0 / math.log(transmittance_1mm / 100.0, 2) # base doesn't matter here. use base 2 for fast computation p = 1.0 / math.log(transmittance_1mm / 100.0) # log-base doesn't matter here. Precompute this value for faster computation of each pixel.
min_luminance = (transmittance_1mm / 100.0) ** (peak_height - base_height) min_luminance = (transmittance_1mm / 100.0) ** (peak_height - base_height)
for (y, x) in numpy.ndindex(height_data.shape): for (y, x) in numpy.ndindex(height_data.shape):
mapped_luminance = min_luminance + (1.0 - min_luminance) * height_data[y, x] mapped_luminance = min_luminance + (1.0 - min_luminance) * height_data[y, x]
height_data[y, x] = base_height + p * math.log(mapped_luminance, 2) # use same base as a couple lines above this height_data[y, x] = base_height + p * math.log(mapped_luminance) # use same base as a couple lines above this
else: else:
height_data *= scale_vector.y height_data *= scale_vector.y
height_data += base_height height_data += base_height