Back to results
US 6,320,611 B1Granted
Method and device for air-ground recognition for optoelectronic equipment
AssigneeThomson-CSF
InventorChristian Pepin
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeThomson-CSF
InventorChristian Pepin
Estimating the term…
A processing device for air/ground reconnaissance using optronic equipment of high performance. A high speed detection matrix and a particular electronic processing of video signals is used to reconstruct a scan image from elementary images which have a high degree of overlap and are offset due to scan residual. For example, an incident light beam is projected in the direction of a line of sight through an optical system. Video signals are transmitted to a digital circuit to supply luminance values of successive elementary images to two image memories. A correlation processor delivers an offset signal for the current image to an image reconstruction processor which also receives luminance values for the current images. An image patch memory is reconstructed in which the elementary images are realigned.
Air/ground reconnaissance process for optronic equipment fitted with a high-speed detection matrix having elementary sensors which are sensitive in the infrared spectrum and supply values of luminance of an observation area on the ground by panoramic scanning of the area in outward and return patches, characterized in that it consists in performing a two-dimensional correlation of elementary image offset by pinpointing areas of overlap of like luminance level in successive elementary images supplied by a panoramic scanning of this matrix, in storing these elementary-image correlations in succession, and in positioning the luminance values of each correlated elementary image in an images patch memory this patch memory possessing an elementary memory spacing equal to a fraction of the image-point spacing of each elementary image.
Dependencies are inferred from the claim text.