Summary of the technology
Dehazing using Color-Lines
Project ID : 10-2014-3005
Description of the technology
Color-lines used to recover scene transmission based on offset of lines from the origin
Computer Science & Engineering, Imaging / Computer Graphics
Research completed, method implemented and tested against state-of-the-art
US patent application filed
Most image dehazing methods remove the layer of haze by recovering the direct scene radiance.
These methods rely on a physical image formation model that describes the hazy image as a combination between the scene radiance and the atmospheric light.
In the case of RGB images, the input image supplies only three of the four constraints required to produce optimum results and necessitate supplying additional information about the scene.
New method produces superior results without the need for additional inputs.
New method for single-image dehazing that relies on a generic regularity in natural images
where pixels of small image patches typically exhibit a one-dimensional distribution in RGB color space, known as color-lines. Local image formation model uses the color-lines in hazy images to recover the scene transmission based on their offset from the origin.
Algorithm validates its hypothesis and obtains more reliable transmission estimates where possible.
Unique pixel distribution predicted by model enables identification of patches not exhibiting proper color-lines and discards them.
Extensive evaluation of this method over different types of images and comparison to state-of-the-art methods over established benchmark images shows consistent improvement in the accuracy of the estimated scene transmission and recovered haze-free radiances.
Real-time implementation on various platforms
Developing application specific user-interface
Applications in long-distance photography
VP Business Dev. Computer Science & IT Director
HUJI, School of Computer Science and Engineering
CS - Computer Vision
About Yissum - Research Development Company of the Hebrew University
Technology Transfer Office from IsraelYissum - Research Development Company of the Hebrew University
Yissum Research Development Company of the Hebrew University of Jerusalem Ltd. Founded in 1964 to protect and commercialize the Hebrew University’s intellectual property. Ranked among the top technology transfer companies, Yissum has registered over 8,900 patents covering 2,500 inventions; has licensed out 800 technologies and has spun-off 90 companies. Products that are based on Hebrew University technologies and were commercialized by Yissum generate today over $2 Billion in annual sales.