Back to results
US 10,475,846 B2Granted
Media security validation
AssigneeNCR Corporation
InventorsYun-Qian Miao, Gary Alexander Ross
Life of this patent
Estimating the term…
Abstract
A residual Infrared (IR) image is calculated from IR images of valuable media having embedded IR security features and visible light images of the valuable media. Features of the IR residual image are extracted as a template for authenticating valuable media items. The template is applied against a presented valuable media item having an embedded IR security feature for assisting in determining whether the presented valuable media item is genuine and fit for further processing within a valuable media depository.
Claims20
A method, comprising:
- (i) selecting reference images for media items from a plurality of visible light images of the media items, wherein selecting further includes selecting 3 of 4 of the reference images from three visible light images associated with:
- red-light pixel values, green-light pixel values, blue-light pixel values, and a sum of the red-light pixel values, green-light pixel values, and blue-light pixel values added to together with the sum multiplied by ⅓, and selecting a 4th of the reference images as the blue-light pixel values added to the green-light pixel values;
- (ii) calculating Infrared (IR) residual images from IR images of the media items and the selected reference images;
- (iii) extracting features of the IR residual images as a template;
- and
- (iv) applying the template to a presented media item having an embedded IR security feature for assisting in determining whether the presented media item is acceptable for further downstream processing within a valuable media depository.
3 more elements
A method, comprising:
- obtaining pixel coordinate values for an Infrared (IR) image of a currency note having an embedded IR security feature;
- comparing the pixel coordinate values against a distribution of values that are acceptable for the currency note, wherein the distribution of values are a relative difference between an IR channel and a visible light channel, wherein the visible light channel includes a selection of 3 sets of pixel coordinate values from:
- red light, green light, blue light, and a sum of the red light, the green light, and the blue light with the sum multiplied by ⅓, and wherein the visible light channel also includes 1 set of pixel coordinate values that includes the blue light added with the green light;
- scoring the IR image based on comparing the pixel coordinate values;
- and
- determining whether the currency note is acceptable or unacceptable for further processing within a Self-Service Terminal based at least in part on the scoring.
3 more elements
A depository, comprising:
- a document validation module/device (DVM) integrated into the depository;
- and
- a document validator configured to:
- i) execute on at least one hardware processor of the DVM or the depository and ii) determine whether a currency note is genuine and fit for processing within the depository by accounting for a relative difference between Infrared (IR) attributes of the currency note and visible light attributes of the currency note, wherein the visible light attributes include a selection of 3 sets of visible light attributes selected from:
- red-light pixel values, green-light pixel values, blue-light pixel values, and a sum of the red-light pixel values, green-light pixel values, and blue-light pixel values added to together with the sum multiplied by ⅓, and the visible light attributes also include 1 set of visible light attributes as the blue-light pixel values added to the green-light pixel values.
2 more elements
Dependencies are inferred from the claim text.