Barcode recognition using data-driven classifier
First Claim
Patent Images
1. A method comprising:
- capturing a digital image of an object using a sensor of a device; and
scaling the captured digital image, using one or more processors of the device, to lie within a predefined image view area of a user interface presented on a display screen of the device, while a distance is maintained between the object and the sensor, wherein the scaling is based on mapping information of a real-world coordinate frame onto a sensor coordinate frame.
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Abstract
A barcode decoding system and method are disclosed that use a data-driven classifier for transforming a potentially degraded barcode signal into a digit sequence. The disclosed implementations are robust to signal degradation through incorporation of a noise model into the classifier construction phase. The run-time computational cost is low, allowing for efficient implementations on portable devices. Implementations are disclosed for intelligent preview scaling, barcode-aware autofocus augmentation and multi-scale signal feature extraction.
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Citations
22 Claims
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1. A method comprising:
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capturing a digital image of an object using a sensor of a device; and scaling the captured digital image, using one or more processors of the device, to lie within a predefined image view area of a user interface presented on a display screen of the device, while a distance is maintained between the object and the sensor, wherein the scaling is based on mapping information of a real-world coordinate frame onto a sensor coordinate frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
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one or more processors; memory configured for storing instructions, which, when executed by the one or more processors, causes the one or more processors to perform operations comprising; capturing a digital image of an object using a sensor of a device; and scaling the captured digital image to lie within a predefined image view area of a user interface presented on a display screen of the device, while a distance is maintained between the object and the sensor, wherein the scaling is based on mapping information of a real-world coordinate frame onto a sensor coordinate frame. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system comprising:
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one or more processors; memory configured for storing instructions, which, when executed by the one or more processors, causes the one or more processors to perform operations comprising; capturing a digital image of an object using a sensor of a device, while the sensor is at a distance from the object; and scaling the digital image to lie within a target guide of a user interface presented on a display area of the device, rather than scaling the target guide to fit a size of the digital image. - View Dependent Claims (22)
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Specification