Large Jpgs Are Loading Very Slow Options

[hanno s]

Hi,

and first of all many thanks to Peter for his great program for OS/2 and eCS.

I would like to ask, if there is a possibility to speed up loading of JPG-files?

JPG-pictures (size 2016x3024, about 2,3 MB) need about 8 s to load.
The same picture as TIFF (17,4 MB) needs less than 1 s.

Also the OS/2 built-in picture-viewer loads much faster than PMView.

Because of the picturesize, PMView has to shrink the picture to 40% to display. If no zooming is used, loading is faster.
(There is no interpolation).

Any hints?

Kind regards
Hanno

[Peter]

Hi,

and first of all many thanks to Peter for his great program for OS/2 and eCS.

I would like to ask, if there is a possibility to speed up loading of JPG-files?

JPG-pictures (size 2016x3024, about 2,3 MB) need about 8 s to load.
The same picture as TIFF (17,4 MB) needs less than 1 s.

Also the OS/2 built-in picture-viewer loads much faster than PMView.

Because of the picturesize, PMView has to shrink the picture to 40% to display. If no zooming is used, loading is faster.
(There is no interpolation).

Any hints?

Kind regards
Hanno

Have you disabled the interpolation completely?

What CPU and speed are you using? The lastest versions of PMView are optimized for Pentium II and above. The JPEG codec works with floating point instead of integer arithmetic, and assembly code is removed to improve compatibity.

If loading feels too slow in PMView Pro, your best bet is probably to switch to PMView 2000 or upgrade to a faster CPU. (PMView 2000 uses integer arithmetic and some assembly to speed up JPEG reading).

Thanks,
Peter