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Adjusting sharpness calc

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ville rantanen
2014-01-14 10:10:58 +02:00
parent 713128bf2f
commit a6f72fc4ab
1 changed files with 6 additions and 2 deletions
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8
image_list.py
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@@ -392,11 +392,15 @@ def append_sharpness(sqlfile):
def get_sharpness(filename): def get_sharpness(filename):
""" Difference in X, Difference in Y, get smaller diff = smaller sharpness. """ Difference in X, Difference in Y, get smaller diff = smaller sharpness.
May change if bugs found.. """ May change if bugs found.. """
small_args="convert ( -define jpeg:size=1024x1024 -resize 1024x1024! -colorspace gray XXX -normalize -equalize ) \
# Resize to 1024 smaller axis, crop with golden ratio
# grayscale and equalize histogram. calculate difference between x neighbor
# and y neigbor. smaller difference = less sharp.
small_args="convert ( -define jpeg:size=2048x2048 -resize 1024^ -gravity center -crop 62%x62%+0+0 -colorspace gray XXX -equalize ) \
( -clone 0 ( -clone 0 -roll +1+0 ) -compose Difference -composite -shave 1x1 ) \ ( -clone 0 ( -clone 0 -roll +1+0 ) -compose Difference -composite -shave 1x1 ) \
( -clone 0 ( -clone 0 -roll +0+1 ) -compose Difference -composite -shave 1x1 ) \ ( -clone 0 ( -clone 0 -roll +0+1 ) -compose Difference -composite -shave 1x1 ) \
-delete 0 -compose Darken -composite -format %[fx:mean*1000] info:".split(" ") -delete 0 -compose Darken -composite -format %[fx:mean*1000] info:".split(" ")
small_args[8]=filename+'[0]' small_args[12]=filename+'[0]'
p=subprocess.Popen(small_args,stdout=subprocess.PIPE) p=subprocess.Popen(small_args,stdout=subprocess.PIPE)
sharpness, err = p.communicate() sharpness, err = p.communicate()
return float(sharpness.strip()) return float(sharpness.strip())