King Fai Choi

US Patent:

6967746, Nov 22, 2005

Filed:

Aug 30, 2000

Appl. No.:

09/651508

Inventors:

Douglas G. Walker - Boston MA, US
Robert F. Poe - Charlestown MA, US
King F. Choi - Lexington MA, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G06F015/00
B41B001/00

US Classification:

358 19, 358 115

Abstract:

A system is described that uses [device>PCS] transformations for a source and destination device along with user preference information to create a composite [device>device] transformation which is used to convert a color in a source space from a source device into a color in a destination space provided to a destination device. The user preference information can be a default or extracted from an image or from the profiles involved or from a GUI. The system modifies the domain of the [device>PCS] transform from a destination device profile through the use of an ink manifold such that there are three input dimensions. The inking manifold can be an identity transform. The system also modifies the range of the [device>PCS] transform from a source device profile such that the PCS coordinates are all within the range of the modified [device>PCS] transform. The modified destination transform is inverted for values in the source transform domain to produce the [device>device] transform. The range of the [device>device] transform can be modified by applying the inking manifold transform to yield coordinates in the range of the destination device.

US Patent:

20030101269, May 29, 2003

Filed:

Nov 26, 2001

Appl. No.:

09/994313

Inventors:

King Choi - Lexington MA, US

Assignee:

Eastman Kodak Company

International Classification:

G06F015/16

US Classification:

709/228000, 709/203000

Abstract:

The present invention is a system that allows for communication between a remote server computer and an external local device attached to a client computer. The server computer places instructions in a cookie file stored on the client computer. A Device Interface Agent program (DIA) on the client computer that reads the cookie access file. The DIA program communicates with the external device, in accordance with the server's or applet's instructions. Through this system, the cookie file or limited access file may be used to facilitate control of the external device, by the server computer.

US Patent:

20050093879, May 5, 2005

Filed:

Oct 31, 2003

Appl. No.:

10/700127

Inventors:

Joan Zanghi - Rochester NY, US
Kevin Gobeyn - Honeoye Falls NY, US
Geoffrey Woolfe - Penfield NY, US
King Choi - Lexington MA, US
George Pawle - North Reading MA, US
Michael Schwartz - Belmont MA, US

International Classification:

G09G005/02

US Classification:

345589000

Abstract:

The present invention is directed to a system that produces a characterization target for an existing input/output device using fixed control values and dynamically created control values. The fixed control values are chosen from the existing device color space and provide a sample of the gamut of the device. Important colors are dynamically chosen from a number of different sources including user selections, device target measurements and visual neutrals, and dynamically converted into corresponding colorimetric values. An existing characterization associated with the existing device is used to dynamically convert the colorimetric values into the dynamic control values. The fixed and dynamic control values are used to generate the target. The color patches of the target can be arranged to reduce errors in target reproduction and to allow visual confirmation of the target. The target can then be output, measured and used to characterize the device.

US Patent:

55984827, Jan 28, 1997

Filed:

May 16, 1994

Appl. No.:

8/243433

Inventors:

Thyagarajan Balasubramanian - West Lafayette IN
King Choi - Rochester NY
Joseph DiVencenzo - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G06K 948

US Classification:

382199

Abstract:

The apparatus and method of the present invention quickly determines the presence of contours in a digital color image by determining the busy and the non-busy (smooth) regions of the original digital color image and determining the luminance variations in the smooth regions of the original digital color image and in a quantized version of the original digital color image. The difference between the luminance variations is compared against a selected threshold value, which if exceeded causes a mark to be associated with the pixel under consideration. For each pixel of the quantized digital color image that is associated with the mark or has a mark associated with a neighboring pixel in a window around the pixel of interest the color of the pixel is selected to minimize and or remove the contour.

US Patent:

48857050, Dec 5, 1989

Filed:

Feb 25, 1988

Appl. No.:

7/160475

Inventors:

King F. Choi - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G06F 1518
G01J 2900

US Classification:

364525

Abstract:

The present invention involves a computer-based expert system tool for making decisions regarding photofinishing processes. An expert mentor in the photofinishing area provides specific information both factual knowledge and judgmental knowledge including any judgmental rules he uses to make judgments and solve problems in the photofinishing area for a number of different processes. The expert then makes representative decisions using the computer which characterizes situations in terms of their data values based on information derived from a control strip used in the given photofinishing process. From this interaction the expert system tool of this invention is able to generate an internal representation of the logical processes of the expert and to characterize each situation in terms of a series of intermediate judgments. The expert system tool of this invention can determine the relative logical importance of each of the data points and to classify each as being of either major or minor significance.