Is there any influence of the input format of the image PNG vs TIFF

[Rani Yaroshinski]

From the point of view of the performance measures of the OCR ?

If I can choose the format, which should I prefer ?

[Nick White]

On Wed, Jul 09, 2014 at 09:48:20AM -0700, Rani Yaroshinski wrote:
> From the point of view of the performance measures of the OCR ?

I don't think anybody has figures on this. You could do some tests
yourself, and let us know the results.

I would guess that file size would be a bigger slowdown than the
sorts of compression that are available, so whatever is smallest
would be fastest, but that's just a hunch.

> If I can choose the format, which should I prefer ?

I always prefer PNG, only because it's simple and well-defined,
whereas there are lots and lots of different ways of constructing a
tiff image. That said I'm pretty sure you can get way smaller (but
still losslessly compressed) files with tiff using the correct
options, for grayscale / binarised scans.