terrible png placement

terrible png placement

[Hans van der Meer]

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Something terrible must be done to png pictures, either in ConTeXt or in luatex.
I have the following minimal sample code and picture. I include the png for those who want to check.

% Test png addition.
\starttext
Place png figure.\par
\placefigure{Test figure}{\externalfigure[test.png]}
\stoptext

Without the png-picture it makes an 8KB pdf.
But with the png-picture the pdf swells to 1.8MB.
And that for a png-picture of only 48KB.
Moreover making a zip of all this stuff brought the size back to 110KB.
In the log: 
ConTeXt  ver: 2011.11.04 14:15 MKIV  fmt: 2011.11.10  int: english/english
mkiv lua stats  > graphics processing time  - 0.001 seconds including tex, 1 processed images

What is done with the png and can it be remedied? 
This swelling up of small picture to such enormous proportions makes the inclusion of png-picture nearly impossible, at least impractable.

Hans van der Meer





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[-- Attachment #1.2.2: test.png --]
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Re: terrible png placement

[Pontus Lurcock]

On Thu 10 Nov 2011, Hans van der Meer wrote:

> Something terrible must be done to png pictures, either in ConTeXt or in luatex.
> I have the following minimal sample code and picture. I include the png for those who want to check.
> 
> % Test png addition.
> \starttext
> Place png figure.\par
> \placefigure{Test figure}{\externalfigure[test.png]}
> \stoptext
> 
> Without the png-picture it makes an 8KB pdf.
> But with the png-picture the pdf swells to 1.8MB.
> And that for a png-picture of only 48KB.
> Moreover making a zip of all this stuff brought the size back to 110KB.
> In the log: 
> ConTeXt  ver: 2011.11.04 14:15 MKIV  fmt: 2011.11.10  int: english/english
> mkiv lua stats  > graphics processing time  - 0.001 seconds including tex, 1 processed images

Can't reproduce here; I get a 70KB pdf with your file and image.
ConTeXt standalone, 32-bit Linux, mkiv, version 2011.10.01 10:48.

Pont
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Re: terrible png placement

[Meer, H. van der]

Sofar I received 2 reactions.

(1) 
Can't reproduce here; I get a 70KB pdf with your file and image.
ConTeXt standalone, 32-bit Linux, mkiv, version 2011.10.01 10:48.

(2)
I've encountered the same problem. The PDF is 1.8MB big. Compressed with qpdf (qpdf --stream-data=compress) its only 60KB!
Latest beta on OS-X 10.7.2

Further search for the cause:

My system is also OS-X 10.7.2 and latest beta.
To find the culprit I reverted to an older version of ConTeXt.

ConTeXt  ver: 2011.10.14 22:47 MKIV  fmt: 2011.11.11  int: english/english
Now the filesize becomes 72KB instead of 1.8 MB.
This one seems OK.

CONCLUSION: This must have been introduced in one of the  beta's later than 2011.10.14 and in or before the current one: ConTeXt  ver: 2011.11.04 14:15 MKIV.

I kindly suggest Hans takes a look into the matter.

Hans van der Meer


On 10 nov. 2011, at 21:22, Hans van der Meer wrote:

> Something terrible must be done to png pictures, either in ConTeXt or in luatex.
> I have the following minimal sample code and picture. I include the png for those who want to check.
> 
> % Test png addition.
> \starttext
> Place png figure.\par
> \placefigure{Test figure}{\externalfigure[test.png]}
> \stoptext
> 
> Without the png-picture it makes an 8KB pdf.
> But with the png-picture the pdf swells to 1.8MB.
> And that for a png-picture of only 48KB.
> Moreover making a zip of all this stuff brought the size back to 110KB.
> In the log: 
> ConTeXt  ver: 2011.11.04 14:15 MKIV  fmt: 2011.11.10  int: english/english
> mkiv lua stats  > graphics processing time  - 0.001 seconds including tex, 1 processed images




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Re: terrible png placement

[Otared Kavian]

Hi Hans,

On Mac OS X 10.7.2, testing your file I get afile of 110 KB with mkii, and 72 KB with mkiv (from the minimals). You can find the outputs here:
	http://dl.dropbox.com/u/4316076/test-png-mkii.pdf
	http://dl.dropbox.com/u/4316076/test-png-mkiv.pdf

All this with ConTeXt  ver: 2011.11.29 23:11 MKIV  fmt: 2011.12.2.

Best regards: OK

On 11 nov. 2011, at 11:13, Meer, H. van der wrote:

> Sofar I received 2 reactions.
> 
> (1) 
> Can't reproduce here; I get a 70KB pdf with your file and image.
> ConTeXt standalone, 32-bit Linux, mkiv, version 2011.10.01 10:48.
> 
> (2)
> I've encountered the same problem. The PDF is 1.8MB big. Compressed with qpdf (qpdf --stream-data=compress) its only 60KB!
> Latest beta on OS-X 10.7.2
> 
> Further search for the cause:
> 
> My system is also OS-X 10.7.2 and latest beta.
> To find the culprit I reverted to an older version of ConTeXt.
> 
> ConTeXt  ver: 2011.10.14 22:47 MKIV  fmt: 2011.11.11  int: english/english
> Now the filesize becomes 72KB instead of 1.8 MB.
> This one seems OK.
> 
> CONCLUSION: This must have been introduced in one of the  beta's later than 2011.10.14 and in or before the current one: ConTeXt  ver: 2011.11.04 14:15 MKIV.
> 
> I kindly suggest Hans takes a look into the matter.
> 
> Hans van der Meer
> 
> 
> On 10 nov. 2011, at 21:22, Hans van der Meer wrote:
> 
>> Something terrible must be done to png pictures, either in ConTeXt or in luatex.
>> I have the following minimal sample code and picture. I include the png for those who want to check.
>> 
>> % Test png addition.
>> \starttext
>> Place png figure.\par
>> \placefigure{Test figure}{\externalfigure[test.png]}
>> \stoptext
>> 
>> Without the png-picture it makes an 8KB pdf.
>> But with the png-picture the pdf swells to 1.8MB.
>> And that for a png-picture of only 48KB.
>> Moreover making a zip of all this stuff brought the size back to 110KB.
>> In the log: 
>> ConTeXt  ver: 2011.11.04 14:15 MKIV  fmt: 2011.11.10  int: english/english
>> mkiv lua stats  > graphics processing time  - 0.001 seconds including tex, 1 processed images
> 
> 
> 
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________

%%%%%%%%%%%%%%%%%%
Otared Kavian
Département de Mathématiques
Université de Versailles Saint-Quentin
Bâtiment Fermat
45 avenue des Etats Unis
78035 Versailles cedex

Téléphone: +33 1 39 25 46 42
Secrétariat: +33 1 39 25 46 44 
Secrétariat: +33 1 39 25 46 46

e-mail: Otared.Kavian@math.uvsq.fr




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