Noise reduction device, method, chip, event imaging device and electronic equipment

Abstract

The invention discloses a noise reduction device, method, chip, event imaging device and electronic equipment. In order to use the least hardware resources to obtain the best noise reduction performance, the present invention divides the noise reduction scheme of the event imaging device into two parts: time domain clustering and spatial domain clustering. Time domain clustering: According to the time stamp information stored in the first storage space, determine the events whose time stamp difference with the event to be judged is within the set range to form the first event set; airspace clustering: according to the first event set The coordinate information of the event in the event and the coordinate information of the event to be judged determine whether there are events reaching a preset number within the preset distance range of the coordinates of the event to be judged in the first event set; If there are a preset number of events, the event to be judged is a valid event, otherwise it is a noise event. The invention solves the technical problem of high consumption of hardware resources in the prior art, and obtains a high-speed, accurate and ultra-low power consumption noise reduction effect.

Description

technical field [0001] The present invention relates to a noise reduction device, method, chip, event imaging device and electronic equipment, in particular to a device, method, chip, event imaging device and electronic equipment for noise reduction of events by using time domain and space domain information. Background technique [0002] The event imaging device solves the shortcomings of traditional image sensors. It captures moving pictures without the concept of frames. Each pixel works independently and asynchronously. In the entire camera field of view, as long as there is a change in the value of a pixel, an event will be returned. Stronger or weaker (such as night), you can still see clearly, with the characteristics of low delay, strong real-time performance, and large dynamic range. [0003] The event imaging device perceives events by setting a threshold, and each pixel (event imaging unit) perceives a change in light intensity, and generates an event or pulse whe...

AI Technical Summary

Problems solved by technology

And some solutions, although only occupying less hardware resources to achieve noise reduction, and obtain good noise reduction performance, but this solution may accidentally damage some effective events, and its noise reduction performance has room for improvement

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