Class / Patent application number | Description | Number of patent applications / Date published |
235462120 | Bar code stitching (e.g., forming a complete bar code from several partial scans) | 16 |
20080223933 | METHODS AND SYSTEMS FOR FORMING IMAGES OF MOVING OPTICAL CODES - A method aligns a second image of an object taken at a second time with a first image taken at a first time, wherein the object experiences motion relative to an imager between the first and second times. The images are formed of sets of pixels arranged horizontally and vertically in a pattern. The method operates on the pixels of the second image by performing a series of operations to affect an affine transformation without performing matrix arithmetic, preferably by table look-up. The method shifts the pixels of the second image vertically by a constant vertical offset, shifts the pixels of the second image horizontally by a constant horizontal offset, shears the second image horizontally by a skew factor, shears the second image vertically by a skew factor, scales the second image horizontally by a horizontal scale factor; and scale the second image vertically by a vertical scale factor. | 09-18-2008 |
20080245871 | Bar-code reading apparatus and computer-readable medium - Disclosed is a bar-code reading apparatus including: a reading section to read a bar-code a plurality of times to obtain multiple pieces of bar-code image data; a storage section to store the pieces of bar-code image data; a detection section to detect a moving state of the reading section in a three-dimensional space during a reading operation of the bar-code; a correction section to correct the pieces of bar-code image data stored in the storage section into pieces of bar-code image data which are obtained if the bar-code is read when the reading section is at a preset reference position with respect to the bar-code, based on the moving state detected by the detection section; a synthesis section to synthesize the pieces of bar-code image data corrected by the correction section to produce synthesized image data; and a decode section to decode the synthesized image data. | 10-09-2008 |
20090121025 | Automatic image transmission of difficult to read symbols - A method of operating a bar code scanning system adapted for assembling information bearing indicia (IBI) information from partial scans of IBI data which may comprise some undecodable characters, the method comprising the steps of: converting light reflected from a target into output signals representative thereof utilizing an image sensor; illuminating the target utilizing an illumination source; directing light from the target to the image sensor array utilizing receive optics; determining if information contained in IBI within the target derived from the output signals is not decodable; transmitting an image of the IBI to a host processor if the IBI is not decoded; and housing the processor, image sensor, receive optics, illumination source and display in a common housing for hand held operation. | 05-14-2009 |
20090152359 | Methods and Apparatus for Signals Exhibiting Improved Signal to Noise Ratio in Image Bar Code Scanning - Systems and techniques for improved imaging scanning. An imaging bar code scanner uses an imaging device to capture a bar code image, and combines multiple rows of image information. An image of a typical bar code will comprise multiple rows of similar or identical visual information so that the multiple rows of image information will include repetitions of the same image information, with differing or cancelling noise information. The combined information is processed to generate a scan signal, which will exhibit a higher signal to noise ratio compared to a scan signal based on a single row of image information. The scan signal can be analyzed to identify transitions between light and dark areas of the bar code. | 06-18-2009 |
20090212112 | BARCODE DETECTION BASED ON MORPHOLOGICAL OPERATIONS - This disclosure describes techniques for detecting a barcode within an image. An image processor may, for example, process an image to detect regions within the image that may be barcodes. The image processor may identify regions of the image that exhibit a high concentration of edges and a high concentration of pixels with low optical intensity co-instantaneously as potential barcodes. The image processor may identify the regions using a number of morphological operations. The image processor may then determine whether the identified regions are actually barcodes by verifying whether the region have unique barcode features. The barcode detection techniques described in this disclosure may be independent of barcode size, location and orientation within the image. Moreover, the use of morphological operations results in faster and more computationally efficient barcode detection, as well as lower computational complexity. | 08-27-2009 |
20110073653 | BARCODE RECOGNITION METHOD - A barcode recognition method is provided for recognizing a barcode to derive effective barcode information thereof. The barcode includes a plurality of segments. In the method, every time the barcode is scanned and recognized, any segment, in which a barcode information fragment carried therein is able to be derived, is recorded as an effective segment. And then the effective segments are selected and combined to generate a plurality of segment combinations. The information carried by the segment combinations is respectively verified by the checksum thereof, so as to find out the segment combination, which is successfully verified by the checksum thereof, to be the effective combination. Every time the barcode is scanned and recognized, only part of the segments of the barcode has to be successfully recognized, and the effective segments derived are combined and verified, so as to quickly recognize the barcode. | 03-31-2011 |
20110084141 | METHOD FOR READING BARCODES IN ABSENCE OF LOCATION-INDICATING TAGS - A method of recovering a waveform representing a linear bar code, the method including the steps of: moving a sensing device relative to the barcode, said sensing device having a two-dimensional image sensor; capturing, using the image sensor, a plurality of two-dimensional partial images of said bar code during said movement; determining, from at least one of the images, a direction substantially perpendicular to the bars of the bar code; determining, substantially along the direction, a waveform fragment corresponding to each captured image; determining an alignment between each pair of successive waveform fragments; and recovering, from the aligned waveform fragments, the waveform. The method is performed only in the absence of a location-indicating tag in a field of view of the image sensor. | 04-14-2011 |
20130134222 | METHOD FOR THE CONCRETIZING OF A SUBSTRATE - In a method for concretizing a substrate with a code ( | 05-30-2013 |
20130153664 | Multi-Modal One-Dimensional Barcodes - An apparatus for reading a multi-modal barcode is provided. The apparatus includes a camera, an edge detector, wherein the edge detector comprises a filter to read a secondary image, a quantization component, and a barcode processor. | 06-20-2013 |
20130306733 | READER, READING METHOD AND COMPUTER PROGRAM PRODUCT - According to an embodiment, a reader includes an acquiring unit configured to acquire an image containing a code; a detecting unit configured to detect a plurality of local regions containing parts of the code from the image; an integrating unit configured to integrate the local regions to obtain an integrated region; and a reading unit configured to read the code on the integrated region. | 11-21-2013 |
20140203087 | METHOD AND APPARATUS FOR READING OPTICAL INDICIA USING A PLURALITY OF DATA SOURCES - A system for decoding an encoded symbol character associated with a product is provided. The system includes a scanning apparatus comprising a first scan source disposed within a housing, and a second scan source disposed within the housing. The second scan source comprises an operating technology distinct from an operating technology of the first scan source. The first scan source is adapted to output a first scan data set, and the second scan source is adapted to output a second scan data set. At least one of the first scan data set and the second scan data set comprises product bar code scan data. | 07-24-2014 |
20140263652 | SYSTEM AND METHOD FOR PARTITE OPTICALLY READABLE CODE - A system and method for partite optically readable codes are provided. The method includes: scanning at least one component of the partite optically readable code, wherein the partite optically readable code comprises of at least two components; determining whether the remaining components of the partite optically readable code are accessible; combining all the components of the partite optically readable code; and decoding the partite optically readable code. The system includes: a scanning module configured to retrieve a component of a partite optically readable code, wherein the partite optically readable code comprises at least two components; and a code module configured to receive the component from the scanning module, the code module further configured to determine whether the remaining components of the partite optically readable code are accessible, to combine the components of the partite optically readable code, and to decode the partite optically readable code. | 09-18-2014 |
20140263653 | METHOD FOR READING A BARCODE - Method for reading a barcode by means of an optical reader arranged to capture at a determined sampling frequency a series of partial images of the barcode by a sensor having at least one line of pixels. According to the invention it is provided to determine in each partial image a logical value as a function of the light intensity received by a central pixel of the line of pixels and a corresponding bar width when this bar is completely incorporated into the partial image in question. By only setting a maximum speed for the speed of movement of the barcode and dimensioning the line of pixels to ensure that each bar of this barcode is completely incorporated into a partial image at least once, the sequence of bits defined by the barcode is determined by means of an algorithm ignoring the duplications detected in consecutive partial images. | 09-18-2014 |
20160048716 | PASSIVE LIGHT-BASED DATA COMMUNICATION - Techniques are disclosed for light-based communication using a passive light-reflective device having specially coded reflective or printed optics. The optics can be mounted to an object and configured to reflect light such that a receiver is able to receive the reflected light. The optics are further configured to alternatively display a number of different patterns that change as the receiver moves with respect to the optics, thus causing the receiver to receive an apparent stream of modulated light, which represents coded information that can be decoded into meaningful information. The optics can be mounted to a traffic control or other roadside device. As a vehicle approaches and passes the traffic control device, light reflects off of the optics in a series of patterns. This reflected light can be received by the vehicle and processed to relay the information to the operator or on-board vehicle system. | 02-18-2016 |
20160104020 | BARCODE DECODING - Systems and methods for decoding a barcode are disclosed. A scan signal for a first portion of the barcode is acquired. Integrated sub-character barcode feature evidence for the barcode is stored including evidence for a first plurality of possible sub-character barcode feature interpretations for a first plurality of sub-character barcode features. Sub-character barcode feature measurements are extracted for a second plurality of sub-character barcode features from the scan signal. Sub-character barcode feature evidence is determined for the second plurality of sub-character barcode features, including evidence for a second plurality of possible sub-character barcode feature interpretations for the second plurality of sub-character barcode features. Whether a portion of the integrated sub-character barcode feature evidence corresponds to a portion of the sub-character barcode feature evidence is determined. The sub-character barcode feature evidence is integrated into the integrated sub-character barcode. Character values are determined from the integrated sub-character barcode feature evidence. | 04-14-2016 |
20160110580 | CODE READING DEVICE AND CODE READING PROGRAM - A code reading device is equipped with a region extracting unit | 04-21-2016 |