5results about How to "Improve decoding success rate" patented technology

This invention discloses a barcode detection and recognition method and apparatus, comprising: acquiring a barcode image; acquiring a first binarized image of the barcode image based on global binarization; recognizing the barcode image based on the first binarized image and barcode localization to obtain a first recognition result; when the recognition result is recognition failure, acquiring the location of the decoding failure module; acquiring a target region of the barcode image based on the location of the decoding failure module and a preset window; performing local binarization on the target region to obtain a second binarized image, and acquiring the bar width information of the decoding failure module based on barcode characteristics, preset search rules, and the second binarized image; recognizing the barcode image based on the bar width information and the first binarized image to obtain a second recognition result. This invention improves the decoding success rate when dealing with incomplete or irregular barcodes by locating the target region and combining barcode characteristics and preset rules to infer and repair bar width information.

A non-orthogonal semi-unlicensed adaptive transmission method for low-Earth orbit (LEO) satellite communication includes: simultaneously selecting scheduled licensed users and selected unlicensed users according to preset scheduling rules; comparing the channel gain of the licensed users with a preset transmission strategy decision threshold value, and selecting transmission strategy A or transmission strategy B; if transmission strategy A is executed: adjusting the transmission power of each user according to the power allocation method specified in transmission strategy A, and simultaneously uploading their respective signals to the LEO satellite using an uplink non-orthogonal access method; the LEO satellite decoding order is to decode the licensed user signal first, and then decode the unlicensed user signal; if transmission strategy B is executed: adjusting the transmission power of each user according to the power allocation method specified in transmission strategy B, and simultaneously uploading their respective signals to the LEO satellite using an uplink non-orthogonal access method; the LEO satellite decoding order is to decode the unlicensed user signal first, and then decode the licensed user signal.

This invention relates to the field of QR code technology, specifically to a character code generation method, decoding method, and apparatus. The method includes: acquiring text to be encoded and converting it into information to be encoded through an encoding mode; creating a scanning area and filling the scanning area with target text, wherein the version of the scanning area is determined based on the size of the target text and the size of the information to be encoded; splitting the information to be encoded into one or more data modules; matching candidate filling positions for each data module by traversing the outline formed by the strokes of the target text according to the size of the split data modules; and filling each data module into its corresponding filling position after a successful match. This invention provides a QR code encoding and decoding method that can be recognized by both machines and the human eye. Each character has a fixed outline path formed by strokes, and by changing the control points on the outline to embed encoding information, machine recognition and human eye recognition are combined.

This application provides an LDPC code error correction method, apparatus, electronic device, and storage medium. The method includes: after completing one round of iterative decoding of the current codeword of the LDPC code, determining whether the current codeword is in an oscillatory correctable state according to a preset oscillation correctability determination condition; when the current codeword is determined to be in an oscillatory correctable state, adjusting the preset parameters in the iterative decoding process by weighting and offsetting; after the adjustment is completed, continuing to perform the next round of iterative decoding on the current codeword until the current codeword is successfully decoded; obtaining the next codeword and repeating the above steps until all codewords in the oscillatory correctable state are successfully decoded. This application avoids the time overhead and resource consumption caused by restarting the post-processing flow after decoding failure, effectively reducing the error level, and has the advantages of short processing time, high bandwidth performance, and low hardware resource consumption.

The invention discloses a cast pipe end face two-dimensional code dynamic identification and warehouse payment automation system and method, and belongs to the technical field of industrial automation, and the system comprises a visual trigger positioning module, a multi-code reader networking identification module, a data processing module, a quantity verification module, an abnormity processing module, and a warehouse payment sheet generation module. According to the invention, through the networking design of multiple code readers, the industrial code readers are arranged according to the preset spatial layout to form an identification area covering the end face of the cast pipe with the full specification of DN300mm-DN1000mm, the cast pipes with different specifications can be adapted without adjusting the positions of the code readers, and the problem that the coverage range of the existing fixed code readers is limited is solved; meanwhile, real-time monitoring and accurate triggering of the in-place state of the mobile transportation equipment are achieved through the visual triggering positioning module, equipment parking is not needed, and the transportation efficiency and the recognition continuity of the cast pipe payment warehouse are improved.