HP Color Recovery technology - for low-cost color image display - Technical

Hewlett-Packard Journal,  April, 1995  by Anthony C. Barkans

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* Question: Can an image generated using HP Color Recovery be displayed on output devices other than monitors (e.g., printers)?

Answer: Many applications generate a print file. In this case the data displayed on the monitor is not used to create the print file. Therefore, HP Color Recovery will not interfere with the output. Another method used to generate hardcopy is a screen dump. Unfortunately, a complete solution for dumping a color-recovered image to a printer is not available yet.

Conclusion

Color recovery brings added color capabilities to entry-level systems. Since the technology is based on dither, these additional color capabilities can be brought to an entry-level system while maintaining an interactive environment that supports many current applications.

Acknowledgments

Many people have helped transform HP Color Recovery from an idea into a reality. The list would be too long to print here. Without the list of names I hope everyone involved knows that I appreciate their efforts. However, there are several people that I must list by name. These people are Paul Martin, Larry Thayer, Brian Miller, and Randy Fiscus. Additionally, a special thanks goes to Dave McAllister who took my notes and turned them into real logic. Along the way, Dave found many innovations that led to a better design.

Reference

(1.)HP Color Recovery Technology, HP publication Number 5962-9835E.

RELATED ARTICLE: True Color

In this paper the term true color is used to define color reproduction such that the underlying digital quantization of the color within an image is not discernable by the human eye. In other words a continuous spectrum of color, such as in a rainbow, can be be displayed so that the color appears to vary continuously across the image. In most computer graphics systems this is accomplished using 24 bits of color information per pixel. With 24 bits, any single pixel can be displayed at one of [2.sup.24] (16.7 million) colors.

Some graphics systems may define true color to be represented by less than 24 bits per pixel.

COPYRIGHT 1995 Hewlett Packard Company
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