apparent resolution vs. bits/pixel

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2 total messages Started by James Choi Sat, 23 Jan 1993 23:44

#915

Author: James Choi
Date: Sat, 23 Jan 1993 23:44

12 lines
989 bytes

I would like to do reseach on apparent resolution in function of pixel
depth (bits/pixel).  Could someone forward me, or post the references on
this subject?

More specifically, I am interested in generating a high resolution binary
image from a medium resolution gray scale image.  One immediate application
for this technique is OCR where threshold-only-based binarization of the
original image causes many problems including broken lines, etc.

Thank you in advance.

James Choi

Re: apparent resolution vs. bits/pixel

#938

Author: Richard Kirk
Date: Mon, 25 Jan 1993 11:01

21 lines
1272 bytes

>I would like to do reseach on apparent resolution in function of pixel
>depth (bits/pixel).  Could someone forward me, or post the references on
>this subject?
>
>More specifically, I am interested in generating a high resolution binary
>image from a medium resolution gray scale image.

There's a recent paper "Inverse Halftoning" by C.M.Miceli & K.J.Parker
of the U of Rochester in Journal of Electronic Imaging 1(2) p 143-151.
(Apr 1992).

The Journal of Electronic Imaging is rather new.  I had not heard of it 
myself until a month or so ago.  I am posting this on the net because I
thought others might like to give it a look.

(P.S. I've no connections with JEI)


-- 
Richard Kirk         Image Processing Group    Crosfield Electronics Ltd. U.K.
rak@crosfield.co.uk  0442-230000 x3361/3591    Hemel Hempstead, Herts, HP2 7RH

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