Proceedings ArticleDOI
VLSI architecture design of layer-based bilateral and median filtering for 4k2k videos at 30fps
Ming-Yi Tai,Wei-Chih Tu,Shao-Yi Chien +2 more
- pp 1-4
TLDR
A unified VLSI architecture that is able to compute both kinds of filters for 4k2k videos at 30fps is presented, which is much efficient than existing architectures which support BLF only.Abstract:
Bilateral filtering (BLF) and median filtering (MF) are key components in many applications. As the image resolution grows rapidly, implementation of efficient filtering is highly demanded. In this paper, we present a unified VLSI architecture that is able to compute both kinds of filters for 4k2k videos at 30fps. One feature of this design is that we leverage an emerging layer-based algorithm for both BLF and MF, which turns the non-linear BLF or MF into a set of linear filtering followed by output interpolation. It allows more accurate approximation than previous works. Moreover, to address the introduced design challenges of filter units and comparison units, we propose an architecture with moving sum method (MSM) of box filtering and a parallel component selector (PCS), respectively. The MSM requires only one line buffer, and the PCS architecture allows us to complete the comparison in one cycle. Furthermore, a shared pre-computation unit is also proposed to support both kinds of filters. As a result, our design costs only 6.33KB on-chip memory and 161.5K logic gates to support both BLF and MF. It is much efficient than existing architectures which support BLF only.read more
Citations
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Proceedings ArticleDOI
Design of a 2D Median Filter with a High Throughput FPGA Implementation
TL;DR: This technique combines impulse noise detection, histogram-based median calculation and bit-plane processing to obtain approximate median with the aim of optimizing the throughput at minimum cost of image quality.
Proceedings ArticleDOI
High Throughput VLSI Architecture for Bilateral Filtering in Computer Vision
TL;DR: A novel solution to Bilateral filtering with significant complexity reduction enabling 720 MPixel/second throughput hardware IP in 16nm FinFET and an efficient content-adaptive algorithm for Bilateral Filtering is proposed.
Journal ArticleDOI
CMWMF: Constant Memory Architecture of Weighted Mode/Median Filter for Extremely Large Label Depth Refinement
Sih-Sian Wu,Liang-Gee Chen +1 more
TL;DR: The proposed architecture is one of the most suitable depth refinement architectures for scenarios having a large number of depth candidates and preserves a constant number of disparity values instead of depending on the label count and size of the local supporting window.
Proceedings ArticleDOI
High Throughput VLSI Architecture for Bilateral Filtering in Computer Vision
TL;DR: In this paper , the authors proposed a novel solution to Bilateral filtering with significant complexity reduction enabling 720 MPixel/second throughput hardware IP in 16nm FinFET, which is flexible to support Octave scaling for image pyramid generation and generic 2D convolution engine in computer vision applications.
References
More filters
Proceedings ArticleDOI
Bilateral filtering for gray and color images
Carlo Tomasi,Roberto Manduchi +1 more
TL;DR: In contrast with filters that operate on the three bands of a color image separately, a bilateral filter can enforce the perceptual metric underlying the CIE-Lab color space, and smooth colors and preserve edges in a way that is tuned to human perception.
Journal ArticleDOI
Fast bilateral filtering for the display of high-dynamic-range images
DurandFrédo,DorseyJulie +1 more
TL;DR: A new technique for the display of high-dynamic-range images, which reduces the contrast while preserving detail, is presented, based on a two-scale decomposition of the image into a base layer.
Proceedings ArticleDOI
Fast bilateral filtering for the display of high-dynamic-range images
Frédo Durand,Julie Dorsey +1 more
TL;DR: A new technique for the display of high-dynamic-range images, which reduces the contrast while preserving detail, is presented, based on a two-scale decomposition of the image into a base layer, encoding large-scale variations, and a detail layer.
Journal ArticleDOI
Digital photography with flash and no-flash image pairs
Georg F. Petschnigg,Richard Szeliski,Maneesh Agrawala,Michael Cohen,Hugues Hoppe,Kentaro Toyama +5 more
TL;DR: A variety of applications that analyze and combine the strengths of flash/no-flash image pairs can synthesize new images that are of higher quality than either of the originals.
Proceedings ArticleDOI
Fast cost-volume filtering for visual correspondence and beyond
TL;DR: This paper proposes a generic and simple framework comprising three steps: constructing a cost volume, fast cost volume filtering and winner-take-all label selection, and achieves state-of-the-art results that achieve disparity maps in real-time, and optical flow fields with very fine structures as well as large displacements.