Publication detail

WECIA Graph: Visualization of Classification Performance Dependency on Grayscale Conversion Setting

Škrabánek P., Yildirim S.

Original Title

WECIA Graph: Visualization of Classification Performance Dependency on Grayscale Conversion Setting

Type

journal article in Scopus

Language

English

Original Abstract

Grayscale conversion is a popular operation performed within image pre-processing of many computer vision systems, including systems aimed at generic object categorization. The grayscale conversion is a lossy operation. As such, it can significantly influence performance of the systems. For generic object categorization tasks, a weighted means grayscale conversion proved to be appropriate. It allows full use of the grayscale conversion potential due to weighting coefficients introduced by this conversion method. To reach a desired performance of an object categorization system, the weighting coefficients must be optimally setup. We demonstrate that a search for an optimal setting of the system must be carried out in a cooperation with an expert. To simplify the expert involvement in the optimization process, we propose a WEighting Coefficients Impact Assessment (WECIA) graph. The WECIA graph displays dependence of classification performance on setting of the weighting coefficients for one particular setting of remaining adjustable parameters. We point out a fact that an expert analysis of the dependence using the WECIA graph allows identification of settings leading to undesirable performance of an assessed system.

Keywords

computer vision; generic object categorization; grayscale conversion; weighted means grayscale conversion; classification; performance evaluation; data visualization

Authors

Škrabánek P., Yildirim S.

Released

21. 12. 2018

Publisher

Institute of Automation and Computer Science of the Brno University of Technology

Location

Brno

ISBN

1803-3814

Periodical

Mendel Journal series

Year of study

24

Number

2

State

Czech Republic

Pages from

41

Pages to

48

Pages count

8

URL

https://mendel-journal.org/index.php/mendel/article/view/8

BibTex

@article{BUT155959,
  author="Pavel {Škrabánek}",
  title="WECIA Graph: Visualization of Classification Performance Dependency on Grayscale Conversion Setting",
  journal="Mendel Journal series",
  year="2018",
  volume="24",
  number="2",
  pages="41--48",
  doi="10.13164/mendel.2018.2.041",
  issn="1803-3814",
  url="https://mendel-journal.org/index.php/mendel/article/view/8"
}