公开(公告)号：US11972504B2

公开(公告)日：2024-04-30

申请号：US18324174

申请日：2023-05-26

Applicant: ZHEJIANG LAB

Inventor： Tang Hu ,  Xiao Yu ,  Xiangdi Li ,  Songnan Ren ,  Li Yan

IPC: G06T1/60

CPC classification number: G06T1/60

Abstract: Disclosed a method and a system for overlapping sliding window segmentation of an image based on an FPGA. According to the method, on-chip BRAMs storage resource cost of FPGA is determined; each on-chip BRAM in FPGA is used to cache the pixel data of each segmented sub-image in parallel; when the pixel data received by the BRAMs reaches a preset threshold or the last pixel of the segmented sub-image is written into the on-chip BRAMs, the data is written from the on-chip BRAMs to an off-chip DDR memory in a burst continuous writing mode; the repeated data generated by segmentation of horizontally overlapping sliding windows are written into the on-chip BRAMs corresponding to the current segmented sub-image and adjacent segmented sub-images thereof respectively in a synchronous and parallel manner.

公开(公告)号：US12019571B1

公开(公告)日：2024-06-25

申请号：US18389783

申请日：2023-12-20

Applicant: ZHEJIANG LAB

Inventor： Li Yan ,  Songnan Ren ,  Zhiwei Liu ,  Tang Hu ,  Xiangdi Li ,  Jiani Gu ,  Chunling Hao ,  Xiao Yu

IPC: G06F13/20

CPC classification number: G06F13/20 ,  G06F2213/40

Abstract: A communication method for a multi-chip neural network algorithm based on a FPGA main control, which designs original data frames, status frames, layered data frames, layered weight frames, computation result frames, layered data request frames, layered weight request frames, computation result request frames and running status request frames, and then completes image processing based on the neural network algorithm according to the scheduling of transmitting and receiving processes. The present disclosure ensure that communication of multi-layer data structures and various data types based on the neural network algorithm, and accurately schedules the transmitting and receiving of data required by the main control and each chip in the multi-chip system, and sends out data request commands; it plays a very active role in receiving, transmitting and feeding back the running status of the chip and the errors and error types.