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Event image resolution enhancement method and system

A resolution enhancement and event technology is applied in the field of resolution enhancement methods and systems of event images to achieve the effects of improving resolution, enhancing resolution, and filling the gaps in the field of resolution enhancement.

Active Publication Date: 2018-06-19
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The event image is a form of spatio-temporal event flow, so the super-resolution reconstruction method of the traditional frame image cannot be directly used for this event image

Method used

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  • Event image resolution enhancement method and system
  • Event image resolution enhancement method and system

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Embodiment Construction

[0051] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] In order to better illustrate the solution of the present invention, the following first introduces the event camera:

[0053] The event camera is a device that simulates the information encoding method of the biological retina. Its information output is in the form of spatio-temporal event flow. The event camera detects when and where the intensity changes in the light field, and its data output format is in the form of address event Represents the event stream form of (Address-Event Representation, AER). In the AER format, an event e is represented as a 4-tuple (x, y, t, p). Each event consists of the physical address (x, y) of the pixel that generated the event...

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Abstract

The invention provides an event image resolution enhancement method and system. The method comprises the steps that S1, an event image is divided into the first class of event flow and the second class of event flow; S2, as for each class of event flow, the target event sequence of each pixel is acquired according to the event number distribution matrix and the spike rate function of each class ofevent flow based on a rejection sampling algorithm; and S3, the target event sequences of all the pixels of the first class of event flow and the target event sequences of all the pixels of the second class of event flow are combined so as to acquire the enhanced event image after resolution enhancement of the event image. The event sequence of each pixel of the enhanced event flow correspondingto each class of polarity event flow is sampled through the rejection sampling algorithm so that resolution enhancement of the low-resolution event image can be realized. The blank of the field of event image resolution enhancement can be filled, the resolution of the event image can be effectively enhanced and various application of the event image can be facilitated.

Description

technical field [0001] The present invention relates to the technical field of image processing, and more particularly, to a method and system for enhancing the resolution of an event image. Background technique [0002] The event camera is a device that simulates the information encoding method of the biological retina, and its information output is in the form of a spatiotemporal event stream. figure 1 A schematic diagram of the working principle of the event camera, such as figure 1 as shown, figure 1 (a) shows the rotation process of a rotating dot to be recorded by the event camera, figure 1 (b) shows the event stream output by the event camera, figure 1 (c) shows the pattern display of the accumulation of spatiotemporal events on a two-dimensional map at a certain time. [0003] Silicon-based event cameras are also called silicon retinas or dynamic vision sensors (Dynamic Vision Sensor, DVS). Unlike conventional frame-based cameras, which acquire light intensity i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T3/40
CPCG06T3/4023G06T5/00
Inventor 施路平李洪敏何伟杨哲宇裴京
Owner TSINGHUA UNIV
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