Latest granted patents

 

F. Albu, L. Murray, P. Stec, I. Raducan, “Image rotation from local motion estimates”, US 8,705,894, April 22, 2014  

www.google.com/patents/US8705894

ABSTRACT: A measure of frame-to-frame rotation is determined. Integral projection vector gradients are determined and normalized for a pair of images. Locations of primary maximum and minimum peaks of the integral projection vector gradients are determined. Based on normalized distances between the primary maximum and minimum peaks, a global image rotation is determined.

 

A. Drimbarean, A. Zamfir, F. Albu, V. Poenaru, C. Florea, C. Bigioi, E. Steinberg, P. Corcoran, “Tone mapping for low-light video frame enhancement”, US 8,698,924, April 15, 2014

www.google.com/patents/US8698924

ABSTRACT: A technique is provided for generating sharp, well-exposed, color images from low-light images. A series of under-exposed images is acquired. A mean image is computed and a sum image is generated each based on the series of under-exposed images. Chrominance variables of pixels of the mean image are mapped to chrominance variables of pixels of the sum image. Chrominance values of pixels within the series of under-exposed images are replaced with chrominance values of the sum image. A set of sharp, well-exposed, color images is generated based on the series of under-exposed images with replaced chrominance values.

 

F. Albu, A. Drimbarean, A. Zamfir, C. Florea, P. Corcoran, “Adaptive PSF estimation technique using a sharp preview and a blurred image”, US 8,649,628, February 11, 2014

www.google.com/patents/US8649628

ABSTRACT: An adaptive motion estimation and deblurring technique for acquired digital images includes acquiring multiple digital images with a moving digital image acquisition device that includes an image sensor, including a relatively sharp, underexposed reference image and a blurred image. Anb initial approximate point spread function (PSF) is estimated corresponding to the moving of the device. A different DC offset point is determined and a second PSF is calculated based on the different DC offset point.

 

F. Albu, E. Steinberg, ,  P. Corcoran, A. Drimbarean, A. Zamfir, C. Florea, V. Poenaru, ”Image processing method and apparatus”, US 8,649,627, February 11, 2014

www.google.com/patents/US8649627

ABSTRACT: A method and apparatus for providing image processing. For one embodiment of the invention, an image processing apparatus is arranged to process a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image, nominally of the same scene, the first and second images being derived from respective image sources. The apparatus provides a portion of the relatively first underexposed image as an input signal to an adaptive filter; and a corresponding portion of the second relatively well exposed image as a desired signal to the adaptive filter. The adaptive filter produces an output signal from the input signal and the desired signal; and an image generator constructs a first filtered image from the output signal, relatively less blurred than the second image.