METHODS AND APPARATUS FOR OPTICALLY ENHANCING SELECTED FEATURES IN AN IMAGE

Input image features of predetermined brightness are enhanced in an output image by processing the input image using a liquid crystal display in conjunction with specially oriented light polarizing devices.

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Bibliographic Details
Main Author HARWARD, CHARLES N
Format Patent
LanguageEnglish
French
Published 21.05.1990
Edition5
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CALCULATING
COMPUTING
COUNTING
CRYPTOGRAPHY
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
DISPLAY
EDUCATION
FREQUENCY-CHANGING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
SEALS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:Input image features of predetermined brightness are enhanced in an output image by processing the input image using a liquid crystal display in conjunction with specially oriented light polarizing devices.
Bibliography:Application Number: CA19892003528