Hampapur - Revision history

imported>Psych2012: /* Update */

2012-03-25T02:10:25Z

Update

@@ Line 57: / Line 57: @@
 [[File: SellaioLocalMean.jpg | Painting rendered by using local mean of the blue channel within a specified range]]
 [[File: SellaioLocalMedian.jpg | Painting rendered by using local median of the blue channel within a specified range]]
 <br>

imported>Psych2012: /* Updated Comment */

2012-03-24T14:51:59Z

Updated Comment

← Older revision		Revision as of 14:51, 24 March 2012
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	==Updated Comment==		==Updated Comment==
	It definitely appears there to have been degradation in the painting. It also appears that the artist used blue as a primary color over the painting. Sploshes of said color can be seen surround the woman's hair, in the hillock in the left and also in the skies. However, I still maintain that the degradation is not severe as evidenced by the low delta values attributed from all the pertinent changes presented.		It definitely appears there to have been degradation in the painting. It also appears that the artist used blue as a primary color over the painting. Sploshes of said color can be seen surround the woman's hair, in the hillock in the left and also in the skies. However, I still maintain that the degradation is not severe as evidenced by the low delta values attributed from all the pertinent changes presented.
			==Code==
			Included in the zip file are the scripts(in conjunction with ISET) used to create said images.Feel free to use them at will.
			[[Media: Code for Psych 221.zip \| Code for psych 221]]

	==Summary==		==Summary==

imported>Psych2012: /* Update */

2012-03-24T14:48:46Z

Update

← Older revision		Revision as of 14:48, 24 March 2012
Line 51:		Line 51:

	=Update=		=Update=
	After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).		After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E). I would like to draw attention to the third (third from top, the smaller one) rendering of the painting. It seems to bring to light the intended blue in the painting. Also note the spot of blue on the left of the painting. What was dimmer is now more distinct.
	[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]		[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]
	[[File: Sellaiobmin5.5delta1925.jpg \| An estimate of how the painting looked when the b channel within a range of 5.5 is replaced by the minimum of all possible values below this range. Note that delta is 19.25 ]]		[[File: Sellaiobmin5.5delta1925.jpg \| An estimate of how the painting looked when the b channel within a range of 5.5 is replaced by the minimum of all possible values below this range. Note that delta is 19.25 ]]
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	<br>		<br>
			==Updated Comment==
			It definitely appears there to have been degradation in the painting. It also appears that the artist used blue as a primary color over the painting. Sploshes of said color can be seen surround the woman's hair, in the hillock in the left and also in the skies. However, I still maintain that the degradation is not severe as evidenced by the low delta values attributed from all the pertinent changes presented.


	==Summary==		==Summary==

imported>Psych2012: /* Update */

2012-03-24T14:41:45Z

Update

← Older revision		Revision as of 14:41, 24 March 2012
Line 54:		Line 54:
	[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]		[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]
	[[File: Sellaiobmin5.5delta1925.jpg \| An estimate of how the painting looked when the b channel within a range of 5.5 is replaced by the minimum of all possible values below this range. Note that delta is 19.25 ]]		[[File: Sellaiobmin5.5delta1925.jpg \| An estimate of how the painting looked when the b channel within a range of 5.5 is replaced by the minimum of all possible values below this range. Note that delta is 19.25 ]]
	[[File: Sellaiobmin5.jpg \| Same as above, but with delta limited to 18]]		[[File: Sellaiobmin5.jpg \| Same as above, but with delta E limited to 12. In my opinion, this would ideally be the best rendering of the painting because it captures the "blue"ness intended in the painting ]]
	[[File: SellaioLocalMean.jpg \| Painting rendered by using local mean of the blue channel within a specified range]]		[[File: SellaioLocalMean.jpg \| Painting rendered by using local mean of the blue channel within a specified range]]
	[[File: SellaioLocalMedian.jpg \| Painting rendered by using local median of the blue channel within a specified range]]		[[File: SellaioLocalMedian.jpg \| Painting rendered by using local median of the blue channel within a specified range]]

imported>Psych2012: /* Update */

2012-03-24T14:32:25Z

Update

← Older revision		Revision as of 14:32, 24 March 2012
Line 54:		Line 54:
	[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]		[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]
	[[File: Sellaiobmin5.5delta1925.jpg \| An estimate of how the painting looked when the b channel within a range of 5.5 is replaced by the minimum of all possible values below this range. Note that delta is 19.25 ]]		[[File: Sellaiobmin5.5delta1925.jpg \| An estimate of how the painting looked when the b channel within a range of 5.5 is replaced by the minimum of all possible values below this range. Note that delta is 19.25 ]]
	[[File: Sellaiobmin5.jpg \| Same as above, but with delta limited to 18]		[[File: Sellaiobmin5.jpg \| Same as above, but with delta limited to 18]]
	[[File: SellaioLocalMean.jpg \| Painting rendered by using local mean of the blue channel within a specified range]]		[[File: SellaioLocalMean.jpg \| Painting rendered by using local mean of the blue channel within a specified range]]
	[[File: SellaioLocalMedian.jpg \| Painting rendered by using local median of the blue channel within a specified range]]		[[File: SellaioLocalMedian.jpg \| Painting rendered by using local median of the blue channel within a specified range]]
	~~</nowiki>~~

	<br>		<br>

imported>Psych2012: /* Update */

2012-03-24T14:32:02Z

Update

← Older revision		Revision as of 14:32, 24 March 2012
Line 53:		Line 53:
	After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).		After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).
	[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]		[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]
			[[File: Sellaiobmin5.5delta1925.jpg \| An estimate of how the painting looked when the b channel within a range of 5.5 is replaced by the minimum of all possible values below this range. Note that delta is 19.25 ]]
			[[File: Sellaiobmin5.jpg \| Same as above, but with delta limited to 18]
			[[File: SellaioLocalMean.jpg \| Painting rendered by using local mean of the blue channel within a specified range]]
			[[File: SellaioLocalMedian.jpg \| Painting rendered by using local median of the blue channel within a specified range]]
			</nowiki>

	<br>		<br>

imported>Psych2012: /* Update */

2012-03-24T14:28:41Z

Update

← Older revision		Revision as of 14:28, 24 March 2012
Line 52:		Line 52:
	=Update=		=Update=
	After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).		After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).
	[[File: SellaioKmeansJPEG.jpg \| The resulting painting using k-means of the LAB values of the painting]]		[[File: SellaioKmeansJPEG.jpg\| The resulting painting using k-means of the LAB values of the painting]]
			<br>

	==Summary==		==Summary==

imported>Psych2012: /* Update */

2012-03-24T14:26:13Z

Update

← Older revision		Revision as of 14:26, 24 March 2012
Line 51:		Line 51:

	=Update=		=Update=
	~~<nowiki>~~
	After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).		After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).
	[[File: SellaioKmeansJPEG.jpg \| The resulting painting using k-means of the LAB values of the painting]]		[[File: SellaioKmeansJPEG.jpg \| The resulting painting using k-means of the LAB values of the painting]]
	~~</nowiki>~~

	==Summary==		==Summary==

imported>Psych2012: /* Update */

2012-03-24T14:25:32Z

Update

← Older revision		Revision as of 14:25, 24 March 2012
Line 50:		Line 50:
	</nowiki>		</nowiki>

	==Update==		=Update=
	<nowiki>		<nowiki>
	After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).		After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).

imported>Psych2012: /* Update */

2012-03-24T14:25:09Z

Update

← Older revision		Revision as of 14:25, 24 March 2012
Line 53:		Line 53:
	<nowiki>		<nowiki>
	After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).		After obtaining the painting under D65 lighting, several new methods were implemented and carried out with success. In particular, replacing the blue pigments by their mean, replacing all the pigments by their k-mean values, replacing the pigments by the median, mean to within a given range, replacing the blue pigments with the min, max values within a specified range were carried out. With the exception of k-means, and replacing the blue pigments with over-all mean, the delta E values were well within 20 (others were several orders of magnitude higher). Obtaining delta E values within this range as established by Kirby and Saunders (the max value they describe for degradation is about 21 in delta E).
	[[File : SellaioKmeansJPEG.jpg \| The resulting painting using k-means of the LAB values of the painting]]		[[File: SellaioKmeansJPEG.jpg \| The resulting painting using k-means of the LAB values of the painting]]
	</nowiki>		</nowiki>