The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2015
Filed:
Sep. 10, 2012
Valeria Tomaselli, Belpasso, IT;
Mirko Guarnera, San Giovanni La Punta, IT;
Gregory Roffet, Coublevie, FR;
Valeria Tomaselli, Belpasso, IT;
Mirko Guarnera, San Giovanni La Punta, IT;
Gregory Roffet, Coublevie, FR;
STMicroelectronics S.r.l., Agrate Brianza, IT;
STMicroelectronics (Grenoble 2) SAS, Grenoble, FR;
Abstract
An embodiment of a method for reducing chroma noise in digital image data and of a corresponding image processor. Chrominance components are subjected to low-pass filtering. The strength of the low-pass filtering is modulated in accordance with the dynamic range of the luminance signal and the dynamic range of each of the two chrominance signals in order to avoid color bleeding at image-object edges. Moreover, the low-pass filtering is selectively applied to pixels with similar luminance and chrominance values only. A combination of down-sampling and up-sampling units is employed so that comparatively small filter kernels may be used for removing chroma noise with low spatial frequency.