jpeg compression

J

Joe G (Home)

Guest
Hi All,

I want to take a simple JPEG file on a PC and compress it say in to 320x240
B&W file.

What steps do I need to take?

Where can I get the JPEG std file format?

What challengers do you think I need to meet?


Regards
Joseph
 
Joe G (Home) wrote:
Hi All,

I want to take a simple JPEG file on a PC and compress it say in to
320x240 B&W file.

What steps do I need to take?

Where can I get the JPEG std file format?

What challengers do you think I need to meet?


Regards
Joseph
Click to expand...
You can do that with paint, with the shrink/stretch function, but you have
to calculate the percentage. Also the B/W conversion is faulty in paint.
I use the free screen capture program 20/20
http://www.sofotex.com/20/20-download_L230.html
for this kind of stuff. It also converts .bmp to .gif, extremly useful for
circuit diagrams.
--
ciao Ban
Bordighera, Italy
 
I want to take a simple JPEG file on a PC and compress it
say in to 320x240 B&W file.
Joseph -- Joe G (Home)
Click to expand...
The Swiss Army Knife of graphics programs for Windoze
is a freeware app called IrfanView. http://www.irfanview.com

Image; Convert to greyscale
Image; Resize
File; Save as
 
On 3 Aug 2005 11:07:46 -0700, "JeffM" <jeffm_@email.com> wrote:

I want to take a simple JPEG file on a PC and compress it
say in to 320x240 B&W file.
Joseph -- Joe G (Home)

The Swiss Army Knife of graphics programs for Windoze
is a freeware app called IrfanView. http://www.irfanview.com

Image; Convert to greyscale
Image; Resize
File; Save as
Click to expand...
Same here, I have Photoshop, but use Irfanview 95% of the time for
light conversion work (also batch conversion!)


--
- René
 
"Joe G (Home)" <joe.g@optusnet.com.au> wrote in message news:...
Hi All,

I want to take a simple JPEG file on a PC and compress it say in to
320x240 B&W file.

What steps do I need to take?

Where can I get the JPEG std file format?

What challengers do you think I need to meet?


Regards
Joseph
Click to expand...
 
Joe G (Home) wrote:
"Joe G (Home)" <joe.g@optusnet.com.au> wrote in message news:...

Hi All,

I want to take a simple JPEG file on a PC and compress it say in to
320x240 B&W file.

What steps do I need to take?

Where can I get the JPEG std file format?

What challengers do you think I need to meet?


Regards
Joseph
Click to expand...
Use ImageView32 from http://www.arcatapet.net



--
Many thanks,

Don Lancaster
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
voice: (928)428-4073 email: don@tinaja.com

Please visit my GURU's LAIR web site at http://www.tinaja.com
 
Joe G (Home) wrote:
I want to take a simple JPEG file on a PC and compress it say in to
320x240 B&W file.
Click to expand...
Put out US$40 for PMView.

http://www.pmview.com/

Ted
 
On Sun, 07 Aug 2005 23:40:43 +0000, Ted Edwards wrote:

Joe G (Home) wrote:
I want to take a simple JPEG file on a PC and compress it say in to
320x240 B&W file.

Put out US$40 for PMView.

http://www.pmview.com/
Click to expand...
Or put out US$0.00 for Paint Shop Pro 4.12:
http://www.neodruid.org/Share/PSP412.EXE
It's a self-extracting zip, that will install itself.

It's shareware, but I downloaded it about 10 years ago,
and recently, when I offered to pay the $20.00, they
never got back to me, so I guess they've abandoned it.
It still works real good, though!

Cheers!
Rich
 
I want to take a simple JPEG file on a PC and compress it say in to
320x240 B&W file.
Joe G (Home)

Put out US$40 for PMView.
http://www.pmview.com/
Ted Edwards

Or put out US$0.00 for Paint Shop Pro 4.12:
http://www.neodruid.org/Share/PSP412.EXE

Rich Grise
Click to expand...
....or PSP7 (also $0)
http://64.233.167.104/search?q=cache:JzwJhY3dpoEJ:com-puterworks.com/Free_Downloads.htm+Paint-Shop-Pro-*-*-*+site:com-puterworks.com

Patch to upgrade to 7.04
http://www4.jasc.com/pub/patches/psp704ep.exe
 
On Wed, 3 Aug 2005 23:37:43 +1000, "Joe G \(Home\)"
<joe.g@optusnet.com.au> wrote:

Hi All,

I want to take a simple JPEG file on a PC and compress it say in to 320x240
B&W file.

What steps do I need to take?

Where can I get the JPEG std file format?

What challengers do you think I need to meet?


Regards
Joseph
Click to expand...
http://perso.wanadoo.fr/pierre.g/xnview/endownload.html

Or, you can use a subset of XNVIEW which is NCONVERT on the same site.
Nconvert is a command line converter, perfect for batch jobs/scripts
and calling from other programs. Cost: free. Works on most common
operating systems.

Since nconvert is hard to figure out, here is a starter for you:
nconvert -grey 256 -resize 320 240 -out jpeg -o OutName.jpg InName.jpg

You many want to set the compression level (-q) as the default is best
quality.

===
Mark
 
On Wed, 3 Aug 2005 23:37:43 +1000, "Joe G \(Home\)"
<joe.g@optusnet.com.au> wrote:

Hi All,

I want to take a simple JPEG file on a PC and compress it say in to 320x240
B&W file.

What steps do I need to take?

Where can I get the JPEG std file format?

What challengers do you think I need to meet?


Regards
Joseph
Click to expand...
The GIMP. Really good but hell on wheels to get to grips with at
first. It's cheap too, like in freeware.

http://www.gimp.org/windows/

While you're there have a gander at the docs and tuts, you'll need
them.

- YD.

--
Remove HAT if replying by mail.
 
"Joe G \(Home\)" <joe.g@optusnet.com.au> wrote:
Hi All,

I want to take a simple JPEG file on a PC and compress it say in to 320x240
B&W file.
Click to expand...
If you want to do it yourself out of curiosity, I'd start by looking at
jpeg-6b from IJG.

You can get it here:
ftp://ftp.uu.net/graphics/jpeg/

It compiles in windows and unix/linux/etc.

What steps do I need to take?
Where can I get the JPEG std file format?
What challengers do you think I need to meet?
Click to expand...
If you want to implement it yourself, it's quite complex. I'd start with
reading the docs and looking around jpeg-6b. btw, most JPEGs you get
are in "JFIF" format.

--buddy
 
"Joe G \(Home\)" <joe.g@optusnet.com.au> wrote:
Hi All,

I want to take a simple JPEG file on a PC and compress it say in to
320x240
B&W file.
Click to expand...
If you have a not-too recent copy of Microsoft Office (up to Office XP but
not 2003), there's a program called Microsoft Photo Editor that comes with
it that does a dandy job of resizing image (including JPG) files, among
other things.

Norm
 
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