Paper Info
Title
A 2PJ/Pixel/Direction MIMO Processing Based CMOS Image Sensor for Omnidirectional Local Binary Pattern Extraction and Edge Detection.
Abstract
This paper presents an energy-efficient multi-mode CMOS image sensor featuring omnidirectional local binary pattern extraction (LBP-E), edge detection (ED) and normal imaging. A mixed-signal 4-pixel simultaneous group computation (GC) scheme is developed to extract complete 8-direction LBP and edge. High-speed and energy-efficient column-parallel GC is achieved with the proposed group-switchable multi-input multi-output (MIMO) comparator. The reconfigurable mixed-signal processing circuits ensure multi-mode operations with minimum area overhead. Fabricated in $0.18mu text{m}$ CMOS, the prototype sensor consumes $6.5mu text{W}$ and $12.7mu text{W}$ at 30fps for full 8-direction LBP-E and ED, achieving the state-of-the-art FoMs of 2.0 and 3.9 pJ/pixel/direction, respectively. Measurement results also demonstrate high-accuracy on-chip LBP-E, with a histogram similarity of up to 97.5% compared to the DSP one.
Year
Venue
Field
2018
VLSI Circuits
Omnidirectional antenna,Comparator,Image sensor,Computer science,Edge detection,Local binary patterns,Algorithm,Feature extraction,Electronic engineering,CMOS,Pixel
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Xiaopeng Zhong1173.21
Qian Yu227223.02
Amine Bermak349390.25
Chi-ying Tsui41939314.94
May-Kay Law500.34