What is causing the banding in this image made with opencv-py
I'm trying to make a sort of wavelength image with opencv. For the most part, I got it right except some smoothness problems that create banding in the image
Here's the code
#make ChroMAX torus
#diametre of torus
dia = 1000
#size of steps to circle torus
degstepsize = 360 / dia * pi
#number of steps
degstepno = int(360 / degstepsize)
#a third of degstepno
third = int(degstepno / 3)
#number of steps for 255 in a third
colstep = 255 / third
#making base colour ring
baseCol =
#blue to green sector
for i in range(third):
baseCol.append((int(colstep * (third - i)),int(colstep * i),0))
#green to red
for i in range(third):
baseCol.append((0,int(colstep * (third - i)),int(colstep * i)))
#red to blue
for i in range(third):
baseCol.append((int(colstep * i),0,int(colstep * (third - i))))
baseCol = tuple(baseCol)
torus = np.ones((degstepno,100,3), np.uint8) * 30
for i in range(len(torus)):
for y in range(100):
torus[i,y] = baseCol[i]
gui.add(cv2imgload(torus),'Torus')
gui.update()
And here's the image:
Eventually, the image will be wrapped around into a doughnut. The reason I divided the torus by its perimeter instead of 360 degrees was so that I could ensure every pixel is filled in as the torus will be drawn from it's centre (I'm not sure if you'll understand)
python opencv pygame
edited Dec 31 '18 at 16:40
beaker
12.8k22139
asked Dec 31 '18 at 4:09
ManglemixManglemix
1
add a comment |
I'm trying to make a sort of wavelength image with opencv. For the most part, I got it right except some smoothness problems that create banding in the image
Here's the code
#make ChroMAX torus
#diametre of torus
dia = 1000
#size of steps to circle torus
degstepsize = 360 / dia * pi
#number of steps
degstepno = int(360 / degstepsize)
#a third of degstepno
third = int(degstepno / 3)
#number of steps for 255 in a third
colstep = 255 / third
#making base colour ring
baseCol =
#blue to green sector
for i in range(third):
baseCol.append((int(colstep * (third - i)),int(colstep * i),0))
#green to red
for i in range(third):
baseCol.append((0,int(colstep * (third - i)),int(colstep * i)))
#red to blue
for i in range(third):
baseCol.append((int(colstep * i),0,int(colstep * (third - i))))
baseCol = tuple(baseCol)
torus = np.ones((degstepno,100,3), np.uint8) * 30
for i in range(len(torus)):
for y in range(100):
torus[i,y] = baseCol[i]
gui.add(cv2imgload(torus),'Torus')
gui.update()
And here's the image:
Eventually, the image will be wrapped around into a doughnut. The reason I divided the torus by its perimeter instead of 360 degrees was so that I could ensure every pixel is filled in as the torus will be drawn from it's centre (I'm not sure if you'll understand)
python opencv pygame
edited Dec 31 '18 at 16:40
beaker
12.8k22139
asked Dec 31 '18 at 4:09
ManglemixManglemix
1
I've added the image to your question. As for why new users can't post images directly, see this question in meta.stackoverflow.
– beaker
Dec 31 '18 at 16:44
add a comment |
I'm trying to make a sort of wavelength image with opencv. For the most part, I got it right except some smoothness problems that create banding in the image
Here's the code
#make ChroMAX torus
#diametre of torus
dia = 1000
#size of steps to circle torus
degstepsize = 360 / dia * pi
#number of steps
degstepno = int(360 / degstepsize)
#a third of degstepno
third = int(degstepno / 3)
#number of steps for 255 in a third
colstep = 255 / third
#making base colour ring
baseCol =
#blue to green sector
for i in range(third):
baseCol.append((int(colstep * (third - i)),int(colstep * i),0))
#green to red
for i in range(third):
baseCol.append((0,int(colstep * (third - i)),int(colstep * i)))
#red to blue
for i in range(third):
baseCol.append((int(colstep * i),0,int(colstep * (third - i))))
baseCol = tuple(baseCol)
torus = np.ones((degstepno,100,3), np.uint8) * 30
for i in range(len(torus)):
for y in range(100):
torus[i,y] = baseCol[i]
gui.add(cv2imgload(torus),'Torus')
gui.update()
And here's the image:
Eventually, the image will be wrapped around into a doughnut. The reason I divided the torus by its perimeter instead of 360 degrees was so that I could ensure every pixel is filled in as the torus will be drawn from it's centre (I'm not sure if you'll understand)
python opencv pygame
edited Dec 31 '18 at 16:40
beaker
12.8k22139
asked Dec 31 '18 at 4:09
ManglemixManglemix
1
I'm trying to make a sort of wavelength image with opencv. For the most part, I got it right except some smoothness problems that create banding in the image
Here's the code
#make ChroMAX torus
#diametre of torus
dia = 1000
#size of steps to circle torus
degstepsize = 360 / dia * pi
#number of steps
degstepno = int(360 / degstepsize)
#a third of degstepno
third = int(degstepno / 3)
#number of steps for 255 in a third
colstep = 255 / third
#making base colour ring
baseCol =
#blue to green sector
for i in range(third):
baseCol.append((int(colstep * (third - i)),int(colstep * i),0))
#green to red
for i in range(third):
baseCol.append((0,int(colstep * (third - i)),int(colstep * i)))
#red to blue
for i in range(third):
baseCol.append((int(colstep * i),0,int(colstep * (third - i))))
baseCol = tuple(baseCol)
torus = np.ones((degstepno,100,3), np.uint8) * 30
for i in range(len(torus)):
for y in range(100):
torus[i,y] = baseCol[i]
gui.add(cv2imgload(torus),'Torus')
gui.update()
And here's the image:
Eventually, the image will be wrapped around into a doughnut. The reason I divided the torus by its perimeter instead of 360 degrees was so that I could ensure every pixel is filled in as the torus will be drawn from it's centre (I'm not sure if you'll understand)
python opencv pygame
python opencv pygame
edited Dec 31 '18 at 16:40
beaker
12.8k22139
asked Dec 31 '18 at 4:09
ManglemixManglemix
1
edited Dec 31 '18 at 16:40
beaker
12.8k22139
asked Dec 31 '18 at 4:09
ManglemixManglemix
1
edited Dec 31 '18 at 16:40
beaker
12.8k22139
edited Dec 31 '18 at 16:40
beaker
12.8k22139
edited Dec 31 '18 at 16:40
beaker
12.8k22139
12.8k22139
asked Dec 31 '18 at 4:09
ManglemixManglemix
1
asked Dec 31 '18 at 4:09
ManglemixManglemix
1
asked Dec 31 '18 at 4:09
ManglemixManglemix
1
1
I've added the image to your question. As for why new users can't post images directly, see this question in meta.stackoverflow.
– beaker
Dec 31 '18 at 16:44
add a comment |
I've added the image to your question. As for why new users can't post images directly, see this question in meta.stackoverflow.
– beaker
Dec 31 '18 at 16:44
I've added the image to your question. As for why new users can't post images directly, see this question in meta.stackoverflow.
– beaker
Dec 31 '18 at 16:44
I've added the image to your question. As for why new users can't post images directly, see this question in meta.stackoverflow.
– beaker
Dec 31 '18 at 16:44
add a comment |
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I've added the image to your question. As for why new users can't post images directly, see this question in meta.stackoverflow.
– beaker
Dec 31 '18 at 16:44