US 2015/0086127 A1 · METHOD AND IMAGE CAPTURING DEVICE FOR GENERATING ARTIFICIALLY DEFOCUSED BLURRED IMAGE

Abstract

A method and an image capturing device configured to generate a defocused image from a reference image and one or more of focal bracketed images to provide an artificially defocused blurred image. The artificially defocused blurred image is a fusion image composed by processing the reference image and one or more of focal bracketed images to provide a clear foreground with gradual blurred background based on a created depth map. The method is time efficient as it provides faster processing on a captured and down sampled reference image and one or more captured down sampled aligned focal bracketed images. The depth map created using region based segmentation reduces a misclassification at a time of classifying foreground-background and misclassification of pixels to provide fast, robust artificial blurring of background in the captured reference image.

Claims20

Dependent claims

A method of generating an artificially defocused blurred image, the method comprising:

compensating for zoom of a focal bracketed image based on at least one zoom compensation parameter for aligning at least one captured focal bracketed image with a captured reference image;
creating a depth map for at least one pixel in at least one segmented region by down sampling the reference image;
generating a blurred reference image by performing defocused filtering on the down sampled reference image using a lens blur filter;
and
composing a fusion image using at least one image between the captured reference image and an up sampled blurred reference image based on an up sampled depth map for generating the artificially defocused blurred image.

2 more elements

An image capturing device configured to generate an artificially defocused blurred image, wherein the image capturing device comprising:

an integrated circuit which further comprises at least one processor;
and
at least one memory which has a computer program code within the integrated circuit,
wherein the at least one memory and the computer program code with the at least one processor is configured to cause the image capturing device to:
compensate for zoom of a focal bracketed image based on at least one zoom compensation parameter for aligning at least one captured focal bracketed image with a captured reference image;
create a depth map for at least one pixel in at least one segmented region by down sampling the reference image;
generate a blurred reference image by performing defocus filtering on the down sampled reference image using a lens blur filter;
and
compose a fusion image using at least one image between the captured reference image and an up sampled blurred reference image based on an up sampled depth map for generating the artificially defocused blurred image.

6 more elements

Dependencies are inferred from the claim text.

Method and image capturing device for generating artificially defocused blurred image

Life of this patent

Method and image capturing device for generating artificially defocused blurred image

Life of this patent

Abstract

Claims20