A Sub-100 $\mu$ m-Range-Resolution Time-of-Flight Range Image Sensor With Three-Tap Lock-In Pixels, Non-Overlapping Gate Clock, and Reference Plane Sampling
نویسندگان
چکیده
منابع مشابه
A high-resolution time-of-flight range image sensor with a 3-tap lateral electric field charge modulator
1. Intoroduction Recently, various time-of-flight (TOF) range imagers [1-4] have been developed, and are becoming popular in 3D acquisition cameras. This is because TOF range imagers have a high-speed capturing capability, and their millimetric range resolutions are sufficient for their applications such as gesture recognition. However, to apply the TOF range imagers to contactless 3D scanners,...
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In time-of-flight range imagers, as the range resolution increases, a gating clock skew becomes a serious problem. This paper describes two skew calibration techniques implemented in column-parallel circuits for TOF range imagers. Skew calibration technique with optical response is simple but the long calibration time is required. To reduce the calibration time, self-calibration technique with ...
متن کاملRange Non-overlapping Indexing
We study the non-overlapping indexing problem: Given a text T , preprocess it in order to answer queries of the form: given a pattern P , report the maximal set of non-overlapping occurrences of P in T . A generalization of this problem is the range non-overlapping indexing where in addition we are given two indexes i, j to report the maximal set of non-overlapping occurrences between these two...
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A single-tap concentric photogate pixel of 28 μm pitch is developed for application to time-of-flight (ToF) three dimension (3D) image sensors. The 198×108 ToF pixel array exhibits demodulation contrast higher than 50% and distance error less than 1%, over 1 to 7 m range using 20MHz modulation of 850 nm light emitting diode (LED) illumination.
متن کاملTime-of-Flight sensor calibration for accurate range sensing
Over the past years Time-of-Flight (ToF) sensors have become a considerable alternative to conventional distance sensing techniques like laser scanners or image based stereo-vision. Due to the ability to provide full-range distance information at high frame-rates, ToF sensors achieve a significant impact onto current research areas like online object recognition, collision prevention or scene a...
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ژورنال
عنوان ژورنال: IEEE Journal of Solid-State Circuits
سال: 2019
ISSN: 0018-9200,1558-173X
DOI: 10.1109/jssc.2019.2916310