Real-time detection of rotated patterns using FPGA

Yoshifumi, Tanida; Matsumoto, Tsutomu

doi:10.1109/fpt.2009.5377671

Search citation statements

Order By: Relevance

Paper Sections

Select...

Rotation Of the Pattern Around The Z Axis1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2010

Publication Types

Select...

Other1

Relationship

Self Cite1

Independent0

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The details of the pattern detection unit is given in [3]. V. EXPERIMENTAL RESULTS We have implemented the circuits which consists of one pattern detection unit on Xilinx Virtex 4 series.…”

Section: Rotation Of the Pattern Around The Z Axismentioning

confidence: 99%

Detecting Patterns in Various Size and Angle Using FPGA

Suzuki

Yoshifumi

Matsumoto

2010

2010 International Conference on Field Programmable Logic and Applications

Self Cite

View full text Add to dashboard Cite

In this paper, we describe an approach for detecting patterns in various size and angle using FPGA. In many approaches, features of a given pattern which are invariant to scaling and/or rotation are defined in advance, and those features are searched in a given image. These approaches make it possible to narrow down the candidate regions with less computational cost, but the sensitivity depends on how to define the features. In our approach, the image is downscaled by α k and α l along the x and y axes (k, l = 0, 1, 2, ..., n), and the regions in the downscaled images are compared with several sequences of the templates which are generated from the given pattern using direct cross-correlation. This approach requires high computational cost, but by calculating the cross-correlations incrementally starting from the nonrotated pattern, it becomes possible to detect the rotated patterns in various size and angle with one FPGA.

show abstract

“…The details of the pattern detection unit is given in [3]. V. EXPERIMENTAL RESULTS We have implemented the circuits which consists of one pattern detection unit on Xilinx Virtex 4 series.…”

Section: Rotation Of the Pattern Around The Z Axismentioning

confidence: 99%