Signal to noise ratio adjustment circuit, signal to noise ratio adjustment method and signal to noise ratio adjustment program
AssigneeLeica Instruments (Singapore) Pte. Ltd.
InventorGeorge Themelis
Life of this patent
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Abstract
A signal to noise ratio adjustment circuit is configured to determine, whether a signal to noise ratio of a first image is below a first threshold and to determine, whether a variation of imaged content between the first image and a preceding second image of a video sequence is below a second threshold. The signal to noise ratio adjustment circuit is further configured to generate a third image having an increased signal to noise ratio as compared to the first image or the second image if the signal to noise ratio is below the first threshold and if the variation is below the second threshold.
Claims15
A signal to noise ratio adjustment circuit configured to process a video sequence comprising multiple images, the signal to noise ratio adjustment circuit configured to:
- determine whether a signal to noise ratio of a first image of the video sequence is below a first threshold;
- determine whether a motion variation of imaged content between the first image and a preceding second image of the video sequence is below a second threshold;
- and
- generate a third image having an increased signal to noise ratio as compared to the first image or the second image if the signal to noise ratio is below the first threshold and if the motion variation is below the second threshold,
- wherein generating the third image comprises combining at least two images of the video sequence to provide the third image,
- wherein the at least two images comprise the first image and the second image.
A signal to noise ratio adjustment method to process a video sequence comprising multiple images, the method comprising:
- determining whether a signal to noise ratio of a first image of the video sequence is below a first threshold;
- determining whether a motion variation of imaged content between the first image and a preceding second image of the video sequence is below a second threshold;
- and
- generating a third image having an increased signal to noise ratio as compared to the first image or the second image if the signal to noise ratio is below the first threshold and if the motion variation is below the second threshold,
- wherein generating the third image comprises combining at least two images of the video sequence to provide the third image,
- wherein the at least two images comprise the first image and the second image.
Dependencies are inferred from the claim text.