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US 2017/0374305 A1Published application
Anomalous pixel detection
AssigneeFLIR Systems, Inc.
InventorsJoseph Kostrzewa, Nicholas Hogasten, Theodore R. Hoelter, Scott McNally
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Abstract
Systems and methods are disclosed herein to detect pixels exhibiting anomalous behavior in captured image frames. In some examples, temporal anomalous behavior may be identified, such as flickering pixels exhibiting large magnitude changes in pixel values that vary rapidly from frame-to-frame. In some examples, spatial anomalous behavior may be identified, such as pixels exhibiting values that deviate from an expected linear response in comparison with other neighbor pixels.
Claims18
A system comprising:
- a memory component comprising a plurality of executable instructions;
- and
- a processing component adapted to execute the instructions to perform a method comprising:
- receiving first and second image frames comprising a plurality of pixels,
- selecting kernels of the first and second image frames, wherein each kernel comprises a center pixel and a plurality of neighbor pixels,
- comparing a frame-to-frame change of the center pixels with frame-to-frame changes of the neighbor pixels, and
- selectively detecting at least one of the center pixels as a temporally anomalous flickering pixel based on the comparing.
4 more elements
A system comprising:
- a memory component comprising a plurality of executable instructions;
- and
- a processing component adapted to execute the instructions to perform a method comprising:
- receiving an image frame comprising a plurality of pixels,
- selecting a kernel of the image frame, wherein the kernel comprises a center pixel and a plurality of neighbor pixels,
- determining a plurality of linearity measurements based on the center pixel and the neighbor pixels, and
- selectively detecting the center pixel as a spatially anomalous pixel based on the linearity measurements.
4 more elements
Dependencies are inferred from the claim text.