In a method, an electronic device obtains to-be-encoded text, where the to-be-encoded text includes N characters; the electronic device determines a target coding mode for each of the N characters from X optional coding modes; the electronic device groups the N characters into M character fields based on the target coding mode for each character, and determines a target coding mode for each of the M character fields, where M is less than or equal to N; the electronic device encodes the M character fields based on the target coding mode for each character field to obtain a first binary character string; and the electronic device generates, based on the first binary character string, a two-dimensional code of a version corresponding to a length of the first binary character string.

A method for evaluating an output pattern printed on a medium is described. A reference pattern is stored. The output pattern is printed on the medium based correspondingly on the stored reference pattern. A scan based instance of the output pattern is rendered, which has a set of features at least corresponding to the printed output pattern and zero or more features additional thereto. A difference image, having the zero or more features of the rendered scan instance, is computed based on a comparison of the rendered scan instance to the stored reference pattern. Upon the zero or more features including at least one feature, the computed difference image is evaluated in relation to a proximity of at least one feature to locations pixels of the reference pattern.

Object identification codes can be decoded via an object identification code decoding scheme definition having regular expressions. The definition is configurable via editing non-programming-code text representing the definition. A variety of decoding schemes can be supported, including GS1-based schemes, and other schemes that support order-based decoding, multiple field occurrences, and the like. Fields can be implemented as global field names. The technologies are useful for providing flexible object identification code decoding without having to engage in cumbersome programmatic decoding approaches. Barcode, radio frequency identification (RFID), and near-field communication (NFC) implementations can be supported.

A method for evaluating an output pattern printed on a medium is described. A reference pattern is stored. The output pattern is printed on the medium based correspondingly on the stored reference pattern. A scan based instance of the output pattern is rendered, which has a set of features at least corresponding to the printed output pattern and zero or more features additional thereto. A difference image, having the zero or more features of the rendered scan instance, is computed based on a comparison of the rendered scan instance to the stored reference pattern. Upon the zero or more features including at least one feature, the computed difference image is evaluated in relation to a proximity of at least one feature to locations pixels of the reference pattern.

A method for evaluating an output pattern printed on a medium is described. A reference pattern is stored. The output pattern is printed on the medium based correspondingly on the stored reference pattern. A scan based instance of the output pattern is rendered, which has a set of features at least corresponding to the printed output pattern and zero or more features additional thereto. A difference image, having the zero or more features of the rendered scan instance, is computed based on a comparison of the rendered scan instance to the stored reference pattern. Upon the zero or more features including at least one feature, the computed difference image is evaluated in relation to a proximity of at least one feature to locations pixels of the reference pattern.

In image-checking equipment, a detector reads a line-shaped check image formed on a sheet and acquires image data on the check image. A controller calculates an edge blur in a rising edge and a falling edge of the image data, calculates a line width of the check image. The controller refers to a correction table with the measured values of the edge blur and the line width of the check image, and acquires a corrected line width value based on the correction table to obtain the real line width of the check image.

Concepts described herein described herein relate to the determination of media that is presented to indicia readers for digital reading of said indicia. In some cases, embodiments described herein rely on operating an imaging reader in a particular mode of operation where image frames are captured with the intensity of the illumination light varying during said capture and subsequently determining, by analyzing those frame, a media type appearing within the FOV based on one of (i) a lack of an optical signature associated with varying the intensity of the illumination light during the capture of the frame or (ii) a presence of the optical signature associated with the varying the intensity of the illumination light during the capture of the frame.

A method for evaluating an output pattern printed on a medium is described. A reference pattern is stored. The output pattern is printed on the medium based correspondingly on the stored reference pattern. A scan based instance of the output pattern is rendered, which has a set of features at least corresponding to the printed output pattern and zero or more features additional thereto. A difference image, having the zero or more features of the rendered scan instance, is computed based on a comparison of the rendered scan instance to the stored reference pattern. Upon the zero or more features including at least one feature, the computed difference image is evaluated in relation to a proximity of at least one feature to locations pixels of the reference pattern.

An apparatus and method are described for accurately reading barcodes. One embodiment of an apparatus includes: a sensor to detect transitions between bars on a barcode having bars with N different widths; a timer to associate a time value with each of the transitions; a delta calculation module to determine a current delta value for a current bar; a bar identification module to apply a first window value to each of N delta values stored in a memory, each of the N delta values associated with a different one of N different bar widths, the bar identification nodule to compare the current delta value with each of the N delta values having the first window value applied thereto, and identify the current bar as having one of the N widths if the current delta value falls within the first window value applied to one of the N widths.

A method for evaluating an output pattern printed on a medium is described. A reference pattern is stored. The output pattern is printed on the medium based correspondingly on the stored reference pattern. A scan based instance of the output pattern is rendered, which has a set of features at least corresponding to the printed output pattern and zero or more features additional thereto. A difference image, having the zero or more features of the rendered scan instance, is computed based on a comparison of the rendered scan instance to the stored reference pattern. Upon the zero or more features including at least one feature, the computed difference image is evaluated in relation to a proximity of at least one feature to locations pixels of the reference pattern.