The serial encoding method can reduce the diameter of the code disk and simplify the optical pattern, in favour of miniaturization and high precision of the absolute encoder.

与传统绝对式光学编码器相比，码盘直径小、光学图案简单，有利于绝对式编码器实现小型化和提高精度。

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By this filter, the shift, scale and rotation invariant optical pattern recognition was realized with a high signal noise ratio of correlation output.

用这种滤波器实现了平移、旋转、尺度三重不变光学图像识别，且有较高的信噪比。

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In this paper, two methods of realizing optical pattern recognition, spatial matched filter correlation and joint transform correlation (JTC), were discussed first with the emphasis on the JTC.

本文首先论述了实现光学模式识别的两种方案，空间匹配滤波相关识别和联合变换相关识别的原理和技术。

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The optical pattern is spatially uniform, meaning that no positional registration of LEDs is required along its length.

ENGADGET: 3M Uniformity Tape improves lighting quality on LED edge-lit LCDs, lowers production costs

These have been specifically created for the Concept GLA: their tread pattern continues the lines of the spokes in an optical illusion that makes the wheel spokes appear longer.

ENGADGET: Mercedes-Benz GLA concept puts laser projectors in headlights, redefines SUV