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Method for optimizing the output of two-column tae image sensors

An image sensor and pixel technology, applied in the field of image sensors, can solve problems such as edge breakpoints and inability to be collected

Inactive Publication Date: 2017-03-08
杨平良
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Problems solved by technology

However, since the events collected by the two-column TAE image sensor are based on light intensity changes, the edges perpendicular to the direction of the pixel columns in the target cannot be captured due to the inability to produce light intensity changes. point

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  • Method for optimizing the output of two-column tae image sensors

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Embodiment Construction

[0029] 1. Retime stamping. That is, replace the original time stamp with the time stamp of a larger time interval. The time stamp is T in TAE—time, which refers to the time when the event occurs. According to the measured speed, re-time stamp the output information of the two columns of TAE image sensors to obtain a suitable time resolution, so that the resolution of the scaled image in the horizontal and vertical directions is on the same order of magnitude . Generally, if the magnification factor is A, the pixel pitch is dx, and the relative speed between the image sensor and the shooting target is v, then the time interval for re-time stamping, that is, the time resolution is t=dx / Av, which can also be adjusted according to user needs. increase and decrease. During the relabeling process, if there are multiple events for the same pixel within the newly set time interval, these events will be merged into one event as the final output. At the same time, the original TAE i...

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Abstract

The invention relates to the field of image sensors and provides a method for optimizing outputs of two rows of TAE image sensors. According to the method, light intensity changes in the pixel row direction can be output in an X event mode in the later processing process, and therefore the continuous target outline with the single-pixel width can be obtained. The method can be realized in real time through hardware such as an FPGA and a DSP. According to the technical scheme, the method for optimizing the outputs of the two rows of the TAE image sensors comprises the following steps that 1, time stamps are generated again, namely, the time stamps of a large time interval point are used for replacing original time stamps; 2, detailing is carried out; 3, X events are generated and show the light intensity changes in the direction perpendicular to the relative moving direction of a target and the sensors. The method is mainly applied to design and manufacture of silica-based light-emitting electronic devices.

Description

technical field [0001] The invention relates to the field of image sensors, in particular to a method for optimizing the output of two columns of TAE image sensors. [0002] technical background [0003] In recent years, event-address-expression (AER) image sensors have begun to appear and have been initially developed. This kind of image sensor abandons the concept of "frame" in traditional imaging systems, but based on events, asynchronously senses, collects and outputs light intensity changes. [0004] The two-column time-address-event (TAE) image sensor, as a special column-level AER image sensor, has the advantages of simple structure, high speed, small redundancy, and high time resolution. The pixel position where the light intensity change exceeds the threshold will generate an event, and encode it in the way of TAE, that is, the time, address and event type of the event will be stored correspondingly. Here, the event represents the point where the light intensity ch...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
Inventor 徐江涛张梦醒史再峰姚素英高志远聂凯明
Owner 杨平良
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