Sciweavers

PICS
1998
13 years 6 months ago
An Inexpensive Micro-Goniophotometry You Can Build
This paper describes the design and use of a microgoniophotometer. The instrument, configured with a CCD video camera and microscope optics, is meant to resolve goniophotometric m...
J. S. Arney, Hung Tran
PICS
2001
13 years 6 months ago
Diagnostics for Digital Capture Using MTF
The modulation transfer function (MTF) has long been used as a diagnostic tool for analog image capture, by tracking frequency response caused by aperture, field position, or defo...
Don R. Williams, Peter D. Burns
PICS
2001
13 years 6 months ago
Influence of Resolution on Scanner Noise Perceptibility
The perceptibility of scanner noise as a function of resolution is studied using a model for the human visual system and for the scanner noise. The visual system is modeled using ...
Gaurav Sharma, Keith T. Knox
PICS
2001
13 years 6 months ago
Dot Placement Analysis Using a Line Scan Camera and Rigid Body Rotation
Printer manufacturers design print heads and halftone patterns to result in specific types of image characteristics. Many image quality artifacts are a result of differences in ac...
Yair Kipman, Kate Johnson
PICS
2001
13 years 6 months ago
Applying Mixed Adaptation to Various Chromatic Adaptation Transformation (CAT) Models
In 1998, a Technical Committee 8-04 was formed in CIE/Division 8, "to investigate the state of adaptation of the visual system when comparing soft-copy images on selfluminous...
Naoya Katoh, Kiyotaka Nakabayashi
PICS
2001
13 years 6 months ago
An Autosophy Image Content-Based Television System
A first television system based on the Autosophy information theory is now being tested. The new television marks a major theoretical break from conventional television based on t...
Klaus Holtz, Eric Holtz
PICS
2001
13 years 6 months ago
Red Eye Removal using Digital Color Image Processing
The current paper provides methods to correct the artifact known as "red eye" by means of digital color image processing. This artifact is typically formed in amateur ph...
Jon Yngve Hardeberg
PICS
2001
13 years 6 months ago
Entropy-Based Dark Frame Subtraction
Noise due to dark current is a serious limitation for taking long exposure time images with a CCD digital camera. Current solutions have serious drawbacks: interpolation of pixels...
Michael Goesele, Wolfgang Heidrich, Hans-Peter Sei...
PICS
2001
13 years 6 months ago
High Quality MRC Document Coding
The mix raster content (MRC) model can be used to implement highly effective document compression algorithms. However, many MRC based methods which achieve high compression ratio ...
Guotong Feng, Charles A. Bouman, Hui Cheng