Device for assisting in the detection of objects placed on the ground from images of the ground taken by a wave reflection imaging device

摘要

The invention relates to a device for assisting in the detection of a desired object on the ground, said object having a first predetermined height. Said device includes: a display device configured to display an image (12) generated from echos measured by a wave reflection imaging device, the image (12) representing echo strengths generated by the observed area and extending at least along a distance axis (d) representing the oblique distances separating the wave reflection imaging device that generated the echos, the display device making it possible to display a cursor (14) placed on said image on said screen; and a calculation module configured to determine an expected length (w), along the distance axis (d), of an expected shadow (19, 20) projected on the image (12) by the desired object while giving consideration to the fact that the desired object is positioned in a position pointed toward the ground and corresponding to the position of the observed area associated with a position (P) indicated by the cursor (14). The cursor (14) includes at least one expected shadow size (142) proportioned and arranged such as to enable an operator to verify that a shadow projected on the image (12) near the indicated position (P) has the expected length along the distance axis (d).