Interpretation of color histogram
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I'm reading a paper about image processing and came across this color histogram:
image. But I'm not sure how to interpet it. The 3 different curves are for red, green and blue. But what is on the X and Y-axis? My guess would be X-axis going from 0 to 255 for the 'intensity' of the color and Y-axis the amount of pixels in the image that have this intensity. Could anyone confirm this or correct me if I'm wrong?
image-processing
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up vote
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I'm reading a paper about image processing and came across this color histogram:
image. But I'm not sure how to interpet it. The 3 different curves are for red, green and blue. But what is on the X and Y-axis? My guess would be X-axis going from 0 to 255 for the 'intensity' of the color and Y-axis the amount of pixels in the image that have this intensity. Could anyone confirm this or correct me if I'm wrong?
image-processing
New contributor
Not an expert here but your interpretation sounds about right.
– XDS
Nov 10 at 19:43
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I'm reading a paper about image processing and came across this color histogram:
image. But I'm not sure how to interpet it. The 3 different curves are for red, green and blue. But what is on the X and Y-axis? My guess would be X-axis going from 0 to 255 for the 'intensity' of the color and Y-axis the amount of pixels in the image that have this intensity. Could anyone confirm this or correct me if I'm wrong?
image-processing
New contributor
I'm reading a paper about image processing and came across this color histogram:
image. But I'm not sure how to interpet it. The 3 different curves are for red, green and blue. But what is on the X and Y-axis? My guess would be X-axis going from 0 to 255 for the 'intensity' of the color and Y-axis the amount of pixels in the image that have this intensity. Could anyone confirm this or correct me if I'm wrong?
image-processing
image-processing
New contributor
New contributor
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asked Nov 10 at 17:44
user406406406
82
82
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Not an expert here but your interpretation sounds about right.
– XDS
Nov 10 at 19:43
add a comment |
Not an expert here but your interpretation sounds about right.
– XDS
Nov 10 at 19:43
Not an expert here but your interpretation sounds about right.
– XDS
Nov 10 at 19:43
Not an expert here but your interpretation sounds about right.
– XDS
Nov 10 at 19:43
add a comment |
1 Answer
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If I know well, someone please correct me if I am wrong, the X axis represents the possible values of a color from either one of the RGB channels (a value in the [0-255] interval), and the Y axis represents the number of pixels having that value.
New contributor
This corresponds perfectly with the interpretation that is given of this histogram. Thanks.
– user406406406
Nov 10 at 17:51
And the counts are normalized for the peak in this particular histogram: the peaks are made the same, even though the actual peak counts of pixels may differ by quite a bit. Otherwise, the pixel count scales would be same for all colors, and the peaks would not appear at same height usually.
– Kuba Ober
Nov 10 at 17:51
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
accepted
If I know well, someone please correct me if I am wrong, the X axis represents the possible values of a color from either one of the RGB channels (a value in the [0-255] interval), and the Y axis represents the number of pixels having that value.
New contributor
This corresponds perfectly with the interpretation that is given of this histogram. Thanks.
– user406406406
Nov 10 at 17:51
And the counts are normalized for the peak in this particular histogram: the peaks are made the same, even though the actual peak counts of pixels may differ by quite a bit. Otherwise, the pixel count scales would be same for all colors, and the peaks would not appear at same height usually.
– Kuba Ober
Nov 10 at 17:51
add a comment |
up vote
2
down vote
accepted
If I know well, someone please correct me if I am wrong, the X axis represents the possible values of a color from either one of the RGB channels (a value in the [0-255] interval), and the Y axis represents the number of pixels having that value.
New contributor
This corresponds perfectly with the interpretation that is given of this histogram. Thanks.
– user406406406
Nov 10 at 17:51
And the counts are normalized for the peak in this particular histogram: the peaks are made the same, even though the actual peak counts of pixels may differ by quite a bit. Otherwise, the pixel count scales would be same for all colors, and the peaks would not appear at same height usually.
– Kuba Ober
Nov 10 at 17:51
add a comment |
up vote
2
down vote
accepted
up vote
2
down vote
accepted
If I know well, someone please correct me if I am wrong, the X axis represents the possible values of a color from either one of the RGB channels (a value in the [0-255] interval), and the Y axis represents the number of pixels having that value.
New contributor
If I know well, someone please correct me if I am wrong, the X axis represents the possible values of a color from either one of the RGB channels (a value in the [0-255] interval), and the Y axis represents the number of pixels having that value.
New contributor
New contributor
answered Nov 10 at 17:49
Rakirnd
713
713
New contributor
New contributor
This corresponds perfectly with the interpretation that is given of this histogram. Thanks.
– user406406406
Nov 10 at 17:51
And the counts are normalized for the peak in this particular histogram: the peaks are made the same, even though the actual peak counts of pixels may differ by quite a bit. Otherwise, the pixel count scales would be same for all colors, and the peaks would not appear at same height usually.
– Kuba Ober
Nov 10 at 17:51
add a comment |
This corresponds perfectly with the interpretation that is given of this histogram. Thanks.
– user406406406
Nov 10 at 17:51
And the counts are normalized for the peak in this particular histogram: the peaks are made the same, even though the actual peak counts of pixels may differ by quite a bit. Otherwise, the pixel count scales would be same for all colors, and the peaks would not appear at same height usually.
– Kuba Ober
Nov 10 at 17:51
This corresponds perfectly with the interpretation that is given of this histogram. Thanks.
– user406406406
Nov 10 at 17:51
This corresponds perfectly with the interpretation that is given of this histogram. Thanks.
– user406406406
Nov 10 at 17:51
And the counts are normalized for the peak in this particular histogram: the peaks are made the same, even though the actual peak counts of pixels may differ by quite a bit. Otherwise, the pixel count scales would be same for all colors, and the peaks would not appear at same height usually.
– Kuba Ober
Nov 10 at 17:51
And the counts are normalized for the peak in this particular histogram: the peaks are made the same, even though the actual peak counts of pixels may differ by quite a bit. Otherwise, the pixel count scales would be same for all colors, and the peaks would not appear at same height usually.
– Kuba Ober
Nov 10 at 17:51
add a comment |
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Not an expert here but your interpretation sounds about right.
– XDS
Nov 10 at 19:43