Patent Document ID: 20090040337
Application ID: 12146053
Patent Status: 0

Claim One:
1. A method for enhancing wide dynamic range in images, the method comprising: acquiring at least two images of a scene to be imaged, the images acquired using different exposure times; constructing for a first image of said at least two images an illumination mask corresponding to the illumination in the scene, comprising a set of continuous weight values distinctively identifying respective areas of pixels of high or low illumination, over-exposed or underexposed with respect to a predetermined threshold illumination value, assigning one of the weight values to each pixels, whereas other weight value is assigned to other pixels of the other of said at least two images; using a spatial low-pass filter to smooth border zones on the illumination mask, thus assigning pixels in the border zones new continuous weight values in a range between the weight values constructing a combined image using combined weight values with image data of pixels assigned with one weight value of the first image and image data of pixels assigned with other weight value of the other of said at least two images and in pixels corresponding to the border zones using image data from said at least two images proportional to the new weight values.