PROCEDE D'INSERTION ET MEDAILLONS DANS L'IMAGE FOURNIE PAR UN TRANSFORMATEUR NUMERIQUE D'IMAGES ET TRANSFORMATEUR NUMERIQUE D'IMAGES METTANT EN OEUVRE CE PROCEDE

In a digital scan converter particularly for radar images, a process produces a magnified inset during the writing of the video information into the image memory. This makes it possible to increase the definition of the inset. The image memory then contains both the basic image and the insets, the l...

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Bibliographic Details
Main Author JEAN-PIERRE ANDRIEU ET JEAN-CLAUDE HENRI
Format Patent
LanguageFrench
Published 02.06.1989
Edition4
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
CALCULATING
COMPUTING
COUNTING
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Summary:In a digital scan converter particularly for radar images, a process produces a magnified inset during the writing of the video information into the image memory. This makes it possible to increase the definition of the inset. The image memory then contains both the basic image and the insets, the latter being stored with the desired Cartesian coordinates and magnification. The Cartesian coordinates of the points of each inset are obtained by modifying data used for converting the basic image coordinates by the conversion circuits. The desired magnification is obtained by the corresponding modification of the sampling period of the analog video information during its conversion into digital form by the video processing circuits, which makes it possible to increase the definition of the inset compared with that of the basic image.
Bibliography:Application Number: FR19850005013