Image rotating VLSI structure based on cubic translation algorithm

Abstract

The invention belongs to the field of VLSI structure design and provides a three-translation algorithm based image rotation VLSI structure. The structure is designed on the basis of an image rotation ASIC structure of three-translation and cubic convolution interpolation algorithms and is used to solve the problem of unstable images due to the inclination and vibration or motion of a camera platform and realize the rotation of a template during target matching. Based on a hardware implement structure of the three-translation algorithm, the structure reduces demands for storage space by temporarily storing translation amount, realizes three-translation stream line operation by introducing a delay line structure, realizes image edge expansion and reduces the image edge blurring by controlling the read-in data of a memory and a register. Compared with the prior structure, the structure effectively reduces the capacity of an on-chip memory, improves the processing speed and well solves the problems of speed and precision of electronic image stabilization.

Description

Technical field [0001] The invention belongs to the field of very large scale integrated circuit (VLSI) structure design, and specifically relates to an image rotation VLSI structure based on a three-dimensional translation algorithm. Background technique [0002] With the continuous improvement of the requirements for the use of photoelectric monitoring, tracking, and reconnaissance systems, the requirements for the stability of image information have become increasingly strict. The instability of the image is mainly due to the movement or posture change of the camera carrier which will be transmitted to the line of sight of the camera system, causing invalid relative movement (including translation and rotation) between the optical axis of the camera system and the target. Therefore, it is necessary to develop an efficient image rotation hardware structure to meet the high-precision and high-speed requirements of electronic image stabilization. [0003] In the digital image rota...

AI Technical Summary

Problems solved by technology

[0029] Aiming at the time-consuming problem of rotation operation in digital image processing, the present invention provides an image rotation VLSI structure based on three-time translation algorithm, which can reduce the area and cost of the chip when implemented in hardware, and make full use of the parallelism and The speed advantage of the pipeline

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