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Added colour optimisation function

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A new function handles correct rendering of images (especially text) by converting grey areas to black.
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Ace 2020-02-12 09:37:46 +01:00 committed by GitHub
parent 62a67c068a
commit 39f528ad5c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 8 deletions
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10
settings/configuration.py
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@ -35,17 +35,14 @@ else:
top_section_width = middle_section_width = bottom_section_width = display_width top_section_width = middle_section_width = bottom_section_width = display_width
if top_section and bottom_section: if top_section and bottom_section:
print('top and bottom section occupied')
top_section_height = int(display_height*0.11) top_section_height = int(display_height*0.11)
bottom_section_height = int(display_height*0.24) bottom_section_height = int(display_height*0.24)
elif top_section and not bottom_section: elif top_section and not bottom_section:
print('top section occupied')
top_section_height = int(display_height*0.11) top_section_height = int(display_height*0.11)
bottom_section_height = 0 bottom_section_height = 0
elif bottom_section and not top_section: elif bottom_section and not top_section:
print('bottom_section occupied')
top_section_height = 0 top_section_height = 0
bottom_section_height = int(display_height*0.24) bottom_section_height = int(display_height*0.24)
@ -245,6 +242,13 @@ def image_cleanup():
os.remove(temp_files) os.remove(temp_files)
print('Done') print('Done')
def optimise_colours(image, threshold=220):
buffer = numpy.array(image.convert('RGB'))
red, green = buffer[:, :, 0], buffer[:, :, 1]
buffer[numpy.logical_and(red <= threshold, green <= threshold)] = [0,0,0] #grey->black
image = Image.fromarray(buffer)
return image
def calibrate_display(no_of_cycles): def calibrate_display(no_of_cycles):
"""How many times should each colour be calibrated? Default is 3""" """How many times should each colour be calibrated? Default is 3"""
epaper = driver.EPD() epaper = driver.EPD()