US 9,542,736 B2Granted

Evaluating image sharpness

AssigneePaypal, Inc.

InventorsAnurag Bhardwaj, Wei Di, Robinson Piramuthu, Neelakantan Sundaresan, Nate Lyman

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Abstract

A system may be configured to calculate and use image sharpness results. In some example embodiments, a content-aware image sharpness evaluation scheme is implemented by the system to calculate the degree of sharpness or blur of photographs taken of objects of interest. In certain example embodiments, a calculated sharpness score from the image sharpness evaluation scheme is converted into a score that is meaningful relative to other photographs of the same category as the object depicted in the photograph. In various example embodiments, a mobile-based assistant is configured to provide instant (or near instant) feedback to users uploading photographs using a mobile device. In alternative example embodiments, a web-based assistant is configured to provide instant (or near instant) feedback to users uploading one or more photographs simultaneously to an electronic commerce or marketplace website.

Claims20

Dependent claims

A system comprising:

a processor and executable instructions accessible on a non-transitory computer-readable medium that, when executed, cause the processor to perform operations comprising:
receiving an image from a device of a user;
causing the device of the user to display a sharpness score of the image as a response to the receiving of the image;
dividing the image into rectangular regions that are equal in quantity along horizontal and vertical axes of the image;
calculating blur scores of the rectangular regions that are equal in quantity along the horizontal and vertical axes of the image, the calculating of the blur scores of the rectangular regions being based on a non-reference blur metric;
computing a weighting matrix for the image based on two results of filtering the image in perpendicular directions;
generating the sharpness score of the image based on application of the weighting matrix to the blur scores of the rectangular regions;
when the sharpness score of the image is below a certain pre-established threshold, identifying one or more stock images corresponding to an item represented in the image;
and
displaying the identified one or more stock images on the device of the user as a selectable substitute for the image.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/073,788Filed 6 Nov 2013 · us provisional application
Priority: 4 Jun 2013
Published: US 2014/0355881 A14 Dec 2014
Granted: 10 Jan 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G06T 7/0002
Image analysis: inspection of images, e.g. flaw detection
G06T 5/73
Image enhancement or restoration: deblurring; Sharpening
G06T 2207/10024
Image acquisition modality: color image
G06T 2207/20076
Special algorithmic details: probabilistic image processing

Family

Application61/830,951Us provisional application · filed 4 Jun 2013
US 2014/0355881 A1Pre-grant publication · published 4 Dec 2014
US 9,542,736 B2This patent

From the US filing history. Foreign family members aren’t listed.