Patent · US Active

Defogging images and video

US9965835B2 · kind B2 · utility

0Cited by

2References

18Claims

0Family size

Assignee

Axis AB · SE

Inventors

Fredrik Svensson · Lund, SE
Per Kannermark · Malmö, SE
Andreas Nilsson · Göteborg, SE

Key dates

Filing date	Nov 28, 2014
Grant date	May 8, 2018
Priority date	—
Expiry date	Nov 28, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06T5/40
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and system are disclosed. The method may include determining a histogram of intensity values for pixels in image sensor data in which the histogram is bimodal. The method may include determining a breakpoint between the two modes. The histogram may include a first distribution of intensity values below the breakpoint and a second distribution of intensity values above the breakpoint. The method may include generating output intensity values. Generating output intensity values may include compressing the first distribution of intensity values of the pixels with intensity values below the breakpoint, stretching the second distribution of intensity values of the pixels with intensity values above the breakpoint, and generating an output image based on the output intensity values.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.