SYSTEM AND METHOD FOR CAPTURING AND DETECTING SYMBOLOGY FEATURES AND PARAMETERS
First Claim
1. A system for detecting and extracting symbology ID features comprising:
- a. a plurality of single-instruction, multiple-data (SIMD) processors, a memory, and at least one general purpose processor all residing on a discrete die, the memory being constructed and arranged to store and transfer, and the SIMD processors each being constructed and arranged to operate on, a group of pixel data provided by a pixel array; and
b. an ID region of interest (ROI) finding process that operates at least in part while captured pixel data is provided from the pixel array so as to provide a data set adapted to be transmitted to an ID decoding process.
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Abstract
This invention provides a system and method for capturing, detecting and extracting features of an ID, such as a 1D barcode, that employs an efficient processing system based upon a CPU-controlled vision system on a chip (VSoC) architecture, which illustratively provides a linear array processor (LAP) constructed with a single instruction multiple data (SIMD) architecture in which each pixel of the rows of the pixel array are directed to individual processors in a similarly wide array. The pixel data are processed in a front end (FE) process that performs rough finding and tracking of regions of interest (ROIs) that potentially contain ID-like features. The ROI-finding process occurs in two parts so as to optimize the efficiency of the LAP in neighborhood operations—a row-processing step that occurs during image pixel readout from the pixel array and an image-processing step that occurs typically after readout occurs. The relative motion of the ID-containing ROI with respect to the pixel array is tracked and predicted. An optional back end (BE) process employs the predicted ROI to perform feature-extraction after image capture. The feature extraction derives candidate ID features that are verified by a verification step that confirms the ID, creates a refined ROI, angle of orientation and feature set. These are transmitted to a decoding processor or other device.
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Citations
37 Claims
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1. A system for detecting and extracting symbology ID features comprising:
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a. a plurality of single-instruction, multiple-data (SIMD) processors, a memory, and at least one general purpose processor all residing on a discrete die, the memory being constructed and arranged to store and transfer, and the SIMD processors each being constructed and arranged to operate on, a group of pixel data provided by a pixel array; and b. an ID region of interest (ROI) finding process that operates at least in part while captured pixel data is provided from the pixel array so as to provide a data set adapted to be transmitted to an ID decoding process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for detecting and extracting symbology ID features comprising:
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a. a plurality of single-instruction, multiple-data (SIMD) processors, a memory, and at least one general purpose processor all residing on a discrete die, the memory being constructed and arranged to store and transfer, and the SIMD processors each being constructed and arranged to operate on, a group of pixel data provided by a pixel array; b. a front end (FE) process that determines a presence of ID characteristics within a grouping of pixel data while the pixel data is being captured and read from the pixel array; and c. a transmission process that forwards information associated with the presence of the ID characteristics so as to allow a decoding process to decode at least a portion of the pixel data to derive ID information therefrom. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method for detecting and extracting symbology ID features comprising the steps of:
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a. with a plurality of single-instruction, multiple-data (SIMD) processors, a memory, and at least one general purpose processor all residing on a discrete die, storing and transferring, by the memory, a group of pixel data provided by a pixel array and operating, by at least one of the SIMD processors, on the group of pixel data; and b. operating an ID region of interest (ROI) finding process at least in part while captured pixel data is provided from the pixel array so as to provide a data set adapted to be transmitted to an ID decoding process. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for detecting and extracting symbology ID features comprising the steps of:
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a. with a plurality of single-instruction, multiple-data (SIMD) processors, a memory, and at least one general purpose processor all residing on a discrete die, storing and transferring, by the memory, a group of pixel data provided by a pixel array and operating, by at least one of the SIMD processors, on the group of pixel data; b. determining, with a front end (FE) process, a presence of ID characteristics within a grouping of pixel data while the pixel data is being captured and read from the pixel array; and c. forwarding, with a transmission process, information associated with the presence of the ID characteristics so as to allow a decoding of at least a portion of the pixel data to derive ID information therefrom. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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Specification