Electronics and Telecommunications Research Institute

Weon-Geun Oh

Keun-Dong Lee

Sung-Kwan Je

Seung-Jae Lee

Kyung-Ae Moon

Hyuk Jeong

Young-Ho Suh

Wook-Ho Son

Su-Young Chi

Sang Il Na

Da-Un Jung

Sang-Il Na

Young-Sup Hwang

Dae-Geun Jang

A method and system for extracting a visual descriptor using a feature selection are provided. The system includes an image input unit configured to receive an image, a candidate feature point group detecting unit configured to detect a point having a local maximum or minimum of local region filtering in scale-space images as being included in a candidate feature point group, a feature point selecting unit configured to calculate an importance for each candidate feature point, depending on its characteristics, select the candidate feature point as a feature point when its importance is greater than the predetermined threshold value, a dominant orientation calculating unit configured to calculate a dominant orientation of the selected feature point and a visual descriptor extracting unit configured to extract a patch for each feature point, according to its scale, location and dominant orientation, and extract a visual descriptor from the patch.

Method of extracting visual descriptor using feature selection and system for the same

A feature descriptor extracting method in a feature descriptor extracting apparatus is provided. The feature descriptor extracting method involves receiving an image from which a feature descriptor will be extracted, extracting a point at which a change in a pixel statistical value of the image is large as a feature point, and extracting a patch centered on the feature point, blocking the patch to calculate a statistical value of each of a plurality of patch blocks, calculating a morphological gradient by using a statistical value of the block-converted patch, and extracting a feature descriptor by using the morphological gradient in consideration of required feature descriptor complexity.

Scalable feature descriptor extraction and matching method and system

Provided are a system and method for evaluating and certifying video PAT software, including a module for embedding a related information into the video image data and detecting the embedded information. A receiving module receives video PAT software and a certificate application associated with the video PAT software. A setting module sets an evaluation environment according to use cases of the PAT software received through the receiving module. An embedding module embeds predetermined information into a test video image data using an embedder of the received video PAT software. An attack module attacks the test video image data with the embedded information through various attack tools and generating an attacked video image data. A detecting module detects the embedded information from the attacked video image data by using a detector of the received video PAT software. An evaluating module evaluates statistic information about reliability of the video PAT software from the detected information. A certificate generating module generates a certificate containing the evaluated statistic information.

System and method for evaluating and certifying video pat software

A method for analyzing structure of a treatise type of document image in order to detect a title, an author and an abstract region and recognize the content in each of the regions is provided. In order to analyze the structure of a treatise type of document, first, the document image divided into a number of regions and the divided regions are classified into text regions and non-text regions according to attributes of the regions. And then, the candidate regions representing an abstract and an introduction is selected, thereafter word regions are extracted from the candidate regions, and an abstract content portion is determined. Thereafter, the title and the author are separated by using the basic form and the type definition representing an arrangement of each of journals. Finally, the content of the separated regions is recognized to generate said table of contents.

Method for analyzing structure of a treatise type of document image

Growing community of inventors

Daejeon, South Korea

Weon-Geun Oh