14. Monitor characterization and calibration basic - 2011

14. Monitor characterization and calibration basic - 2011 -...

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Unformatted text preview: EE 638: Principles of Digital Color Imaging Systems Lecture 14: Monitor Characterization and Calibration Basic Concepts Color Imaging Systems Capture Process Output Digital Camera Scanners Display: CRT LCD Projector Printers: Laser EP IJ Dye-sub Liquid EP offset RGB RGB CMYK Device-dependent Goal: want colors to look same through out the system. Which CMYK? effect of rendering device Monitor HP DJ 970Cse Mac Driver HP DJ 970Cse IPP Driver Which CMYK? effect of capture device Olympus C3000 Digital Camera Heidelberg Scanner Different color representations Are they all equivalent? How do we get from one to the other? Can we get from one to the other? Even if we can, what do all these numbers mean ? Example: capture to capture Given RGB values from one capture device, can we predict RGB values for a second capture device? Olympus C3000 Digital Camera RGB values (23, 136, 180) (203, 11, 52) (219, 186, 33) (7, 7, 7) Scanner RGB values (?, ?, ?) (?, ?, ?) (?, ?, ?) (?, ?,?) Two Approaches 1. Closed pt-to-pt. solution Separate mappings for each possible combination: C1 P1 C1 P2 C2 P1 C2 P2 Camera 1 Camera 2 Printer 1 Printer 2 Two Approaches (cont.) 2. Standard Interchanging Space Camera 1 Camera 2 Printer 1 Printer 2 Common Space CIE XYZ Device Dependent Space Device Dependent Space Device Independent Color Spaces...
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This note was uploaded on 02/19/2012 for the course ECE 638 taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.

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14. Monitor characterization and calibration basic - 2011 -...

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