2results about How to "Reduce memory size" patented technology

This invention discloses a ranging method, system, device, and computer-readable storage medium. The method includes: periodically emitting laser light through a laser emitter and receiving the laser light reflected from a target object through a laser receiver; randomly selecting at least one target photon from among the photons received by the laser receiver within a laser emission cycle; storing or outputting the measurement results corresponding to the acquired target photon; and determining the ranging result of the target object based on the measurement results stored or output within multiple laser emission cycles. The number of target photons determined within a laser emission cycle is less than the total number of photons received by the laser receiver within the corresponding laser emission cycle. This invention achieves improved accuracy in long-distance ranging while alleviating circuit area constraints.

This invention discloses a method for identifying fractures in roadway surrounding rock based on semantic segmentation and a joint loss function. The method includes constructing and labeling three types of labeled borehole fracture datasets; data augmentation and pixel binarization equalization preprocessing; pixel-level segmentation of the augmented borehole dataset; introducing a two-stage transfer learning training model; using a trained and improved Deeplabv3+ model to identify borehole fracture test sets, and evaluating the segmentation effect using MIoU and PA; batch importing the predicted fracture segmentation images of different types into ImageJ software to set pixel legend scales and obtain actual length parameters. This method reduces the model size while ensuring accurate and rapid extraction of depth feature information of annular fractures, longitudinal fractures, and fractured zones from the rock strata, and obtaining microscopic fracture quantification indicators. It achieves automated identification of borehole fractures in surrounding rock, providing a more reliable reference for evaluating roadway surrounding rock instability.