This electronic compensation of the non - uniformities in the detection of images, in particular infrared, and correction circuit for implementing it.

摘要

The process according to the invention proposes to perform a correction of the non - uniformity of the sensors of a detector of imaging in real time, on the basis of a correction between two adjacent sensors (ci, c i + 1), by determining the difference in intensity of the signals (si, si + 1) delivered by these sensors, and then by adjusting the level of the dc components of these two signals as a function of measuring the difference in intensity of the signals, and finally by propagation of the correction step by step from one sensor to another. & br / an example of embodiment of an elementary circuit of correction according to the invention comprises a subtracter (deltai + 1), in order to protect the intensity of the signals (si, si + 1) delivered by the sensors (ci, c i + 1), after integration and corrected during a correction of the prior art, two counters (sigmai + 1 - + @ i + 1 / chf & & t 339 chf -) for calculating the differences of the intensities of the positive and negative 20 of the signals, a subtracter (deltai + 1) in the levels of the counters to provide a correction value (oi + 1) of the signal (si + 1) to an amplifier (ai + 1), by means of an adapter of gain (g i + 1, k + 1). br / application to the infrared cameras detector array.