convert document images from 24-bit (color) or 8-bit (grayscale) to 1/bit (B/W)

[spoon2001]

I need a tool that would allow me to quickly browse through a bunch of 24
bit (color) and 8
bit (grayscale) document images. For each document I need a slider to
adjust the
threshold level to the best results (with a preview of what the results will
be). Then I want to reduce color depth to 1-bit (black and white) using the
selected
threshold, and save the image to a 1-bit Group 4 TIF file.

I've tried all the programs I have available - Paperport, Irfanview, Xnview,
GIMP, Paint Shop Pro, and none of these programs does what I'm looking for,
at least not adequately or conveniently.

I've tried the batch conversion features of Irfanview, Xnview, and PSP, and
none of them are satisfactory. I haven't even figured out how to set any
threshold value for the color depth reduction before doing the batch
conversion. And even that wouldn't be what I'm looking for - because
different documents need different threshold values in doing the conversion
to 1-bit.

Anybody aware of a tool out there that's well-suited for this sort of thing?

 

[Livewire]

I need a tool that would allow me to quickly browse through a bunch of 24
bit (color) and 8
bit (grayscale) document images. For each document I need a slider to
adjust the
threshold level to the best results (with a preview of what the results will
be). Then I want to reduce color depth to 1-bit (black and white) using the
selected
threshold, and save the image to a 1-bit Group 4 TIF file.

I've tried all the programs I have available - Paperport, Irfanview, Xnview,
GIMP, Paint Shop Pro, and none of these programs does what I'm looking for,
at least not adequately or conveniently.

I've tried the batch conversion features of Irfanview, Xnview, and PSP, and
none of them are satisfactory. I haven't even figured out how to set any
threshold value for the color depth reduction before doing the batch
conversion. And even that wouldn't be what I'm looking for - because
different documents need different threshold values in doing the conversion
to 1-bit.

Anybody aware of a tool out there that's well-suited for this sort of thing?

You might find photofiltre does what you want.
http://photofiltre.free.fr/download_en.htm

But what are you aiming to achieve? I'm very surprised PSP won't work.
It might be worth asking on a graphics newsgroup if anyone has managed
to do what you want rather than seeking yet another program.