Paper Info
Title
Embedded Fir Filter Design For Real-Time Refocusing Using A Standard Plenoptic Video Camera
Abstract
A novel and low-cost embedded hardware architecture for real-time refocusing based on a standard plenoptic camera is presented in this study. The proposed layout design synthesizes refocusing slices directly from micro images by omitting the process for the commonly used sub-aperture extraction. Therefore, intellectual property cores, containing switch controlled Finite Impulse Response (FIR) filters, are developed and applied to the Field Programmable Gate Array (FPGA) XC6SLX45 from Xilinx. Enabling the hardware design to work economically, the FIR filters are composed of stored product as well as upsampling and interpolation techniques in order to achieve an ideal relation between image resolution, delay time, power consumption and the demand of logic gates. The video output is transmitted via High-Definition Multimedia Interface (HDMI) with a resolution of 720p at a frame rate of 60 fps conforming to the HD ready standard. Examples of the synthesized refocusing slices are presented.
Year
DOI
Venue
2014
10.1117/12.2042495
DIGITAL PHOTOGRAPHY X
Keywords
Field
DocType
Light field, plenoptic camera, refocusing, ray tracing, hardware, signal processing, FPGA, FIR filter
Signal processing,Computer science,Field-programmable gate array,Optics,Frame rate,Computer hardware,Finite impulse response,Video camera,Upsampling,Image resolution,HDMI
Conference
Volume
ISSN
Citations 
9023
0277-786X
4
PageRank 
References 
Authors
0.59
10
2
Name
Order
Citations
PageRank
christopher hahne1102.09
Amar Aggoun211521.34