Method for identifying bad pixel against a non-uniform landscape
AssigneeRafael Advanced Defense Systems Ltd.
InventorsDov Tibi, Amikam Zur
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Abstract
A method for identifying bad pixels in a matrix imaging sensor comprises moving the matrix sensor in a prescribed motion with respect to a background landscape (FIG. 1, 10), acquiring a combined image of the landscape, and identifying bad pixels (16) in the matrix sensor from the combined image. The identification is aided by preferably applying filtering to the combined image. The prescribed motion is preferably rotation of the sensor or translation of the sensor around a circle, and the combined image includes a plurality of preferably similar landscape images. The identification of the bad pixels is performed on-line, in real-time, without requiring the use of a black body.
Claims12
A method for identifying defective pixels in a matrix imaging sensor comprising the steps of:
- a. moving the matrix sensor in a prescribed motion with respect to a background landscape;
- b. acquiring a combined image of the landscape;
- and
- c. identifying bad pixels in the matrix sensor from the combined image;
- whereby the identification is performed on-line in real-time without necessitating the use of a black body.
A system for identifying a bad pixels in a matrix imaging sensor, comprising:
- a. moving means to move the matrix detector in a prescribed motion that enables the acquisition of a combined landscape image;
- and
- b. image processing means to identify bad pixels of the matrix sensor using the combined image.
Dependencies are inferred from the claim text.