home *** CD-ROM | disk | FTP | other *** search
Text File | 1990-06-16 | 6.5 KB | 113 lines | [TEXT/GEOL] |
- Contact: Michael D.Sullivan
- Editorial Services
- Communications and Public Affairs
- Eastman Kodak Company
- 343 State Street
- Rochester, NY 14650-0519
- (716) 724-4816
- AppleLink: N1198
-
- Kodak Unveils Macintosh Software to Compress Color Images
-
- Rochester, NY--March 15,1990 -- Kodak has developed image compression
- software which reduces the cost of storing an transmitting large Macintosh
- color image files by as much as 93 percent.
- "Kodak Colorsqueeze image compression software can be used to reduce
- 24-bit PICT and TIFF files by factors of approximately 5:1, 8:1 and 14:1," said
- Robert Bensman, marketing manager for Kodak's Electronic Photography Division.
- "Depending on the specific image, compression ratios can significantly exceed
- these values. Regardless of the compression setting selected, it is virtually
- impossible to distinguish between the original and reconstructed image,"
- Bensman said.
- Bensman noted that Macintosh computer users can generate 24-bit images
- that are as realistic as color photographs for desktop publishing, presentation
- and image database applications. However, these 24-bit color files are 24
- times as large as 1-bit black-and-white, binary image files.
- Colorsqueeze software compresses 24-bit TIFF and PICT files and
- reconstructs them to their original size when needed. The restored file can be
- saved in one of the two supported formats, or copied to the Scrapbook or
- Clipboard.
- "Many adjacent pixels contain the same information, or change gradually in
- predictable ways," Bensman explained. "This redundant data can be compressed
- without sacrificing image information."
- Kodak scientists applied their knowledge of how the human eye perceives
- images to achieve an even higher level of storage efficiency. Bensman
- explained that the human eye is most sensitive to horizontal and vertical
- lines, and perceives diagonal lines less clearly. Colorsqueeze software takes
- that sensitivity into account when compressing image data.
- Kodak has optimized a compression algorithm known as "discrete cosine
- transformation" for the Colorsqueeze program. At the various compression
- levels, a typical 24-bit 512 x 512 file (768K) can be compressed to between 55K
- and 154K including an uncompressed thumbnail. The data contained in the Kodak
- Image Compression (KIC) file format can be used to support the emerging Joint
- Photographic Expert Group (JPEG) international standard. Kodak is a member of
- the JPEG committee.
- "We expect most users will want to use the Colorsqueeze package routinely
- for archiving or backing up color images," Bensman said. "A sample 768K file
- can be compressed in less than 40 seconds on a Macintosh IIcx computer.
- Correspondingly shorter processing times are produced with faster Macs, such
- as the 25 MHz Mac IIci. Upcoming generations of even faster Macintosh machines
- will produce even better results."
- A 3.5-inch 800K disk that would typically store just one of Bensman's
- non-compressed images can now store 10 to 36 of the "squeezed" Kodak Image
- Compression (KIC) files. An Apple FDHD drive and 1.44 megabyte disks can store
- up to 65 such files. Similar improvements are possible with other size files,
- which easily can reach two megabytes or more with 24-bit color images.
- Hard disks can keep more KIC files available for rapid access, Bensman
- pointed out. The KIC files include a "thumbnail" representation of the image
- which can be quickly viewed on the monitor. Users may preview a series of
- images before selecting one to uncompress. Bensman also expects application
- developers to use the KIC file's thumbnail for positioning in desktop
- publishing packages or for image database applications.
- "Many Mac users need to share color images with their colleagues and
- suppliers, such as color separation houses," Bensman said. "With large file
- sizes, long distance charges for such transmissions can quickly mount. At 2400
- baud, a one-megabyte file can take nearly 76 minutes to transmit. Squeezed to
- 75K, that same file can be sent in about five minutes."
- Bensman noted that Kodak is applying more than 100 years of image
- technology experience to meeting the needs of Macintosh users. The company
- pioneered color image compression algorithms when it developed the Kodak
- SV9600-series still video transceiver in 1987. Kodak was among the first to
- support 32-bit color QuickDraw when it introduced a Macintosh version of the
- Kodak SV6510 color printer and applications software at MacWorld, in Boston,
- last August.
- The Colorsqueeze software is fully compatible with Apple System software
- 6.0.3 or later versions. It will operate under MultiFinder with a minimum of
- 768K of memory allocated to the application. The Colorsqueeze package uses
- virtual memory techniques to work with large files and will operate even faster
- if additional RAM is allocated.
- Bensman said that Kodak plans to provide internal "hooks" in future
- releases of Colorsqueeze software to allow other applications to tightly
- integrate with the utility under the upcoming Apple System 7.0. By conforming
- to Apple's Interapplication Communications (IAC) standards, Kodak will pave the
- way for applications developers to use Colorsqueeze software to compress and
- decompress images as their products need to do so, Bensman pointed out.
- Colorsqueeze software will be available April 10, at a list price of $179.
- The software can be ordered directly from Kodak at 1-800-233-1650
- (1-800-233-1647 in New York State.)
-
- (Note: Kodak and Colorsqueeze are trademarks of Eastman Kodak Company.)
-
- (Note: Macintosh and MultiFinder are trademarks of Apple Computer, Inc.)
-
- Customer Inquiries:
- 1-800-445-6325, ext. 110
-
- Customer Orders:
- 1-800-233-1650
- 1-800-233-1647 (In New York State)
-
-
- ```````````````````````````````````````````````````````````````````````````````
- This information is provided to the Apple Developer Group by the product’s
- developer. Apple cannot warrant any third party’s product. Please consult the
- Apple Products & Ref Library, MENU/Software Library, or Redgate Buyer’s Guide
- Library on AppleLink, or contact the third-party company directly for more
- information.
- ```````````````````````````````````````````````````````````````````````````````
- 3rd Party Connection
- Third Party Press Releases
- 6-14-90
-
-
-