Image conversion

About: Image conversion is a research topic. Over the lifetime, 2490 publications have been published within this topic receiving 19077 citations.

Method and apparatus for recognizing iris through pupil detection

Abstract: The present invention provides a method and a device to recognize an iris through pupil detection capable of improving accuracy of extracting an iris image. According to an embodiment of the present invention, the device to recognize the iris comprises: an image conversion unit converting an original image of a subject being photographed obtained by an image capturing part into a grayscale image; an image binarization unit performing binarization with respect to the image converted into the grayscale; a pixel grouping unit having a same pixel value in the binary image, classifying an interconnected region into a same group; a pupil detection unit determining a region where a physical value belongs within a reference range among the regions grouped by the pixel grouping unit as a pupil region; and an iris image extraction unit specifying an iris region on an original image based on a location of the pupil region.

Logically Efficient Spatial Resolution Conversion Using Paired Increasing Operators

Abstract: In a typical office setting, digital documents may be handled by a variety of devices and software packages that perform scanning, printing, display, transmission, and various forms of image processing. The devices that comprise the system may each operate at a different sampling resolution and spatial resampling must often be performed to allow porting of a digital image among the various devices. The primary purpose here is to design optimal integer resolution-conversion filters based onincreasingoperators rather than the more typically employednon-increasingoperators. Design and implementation of optimal increasing filters possess certain statistical advantages and, more importantly from the perspective of real-time imaging, there is often a great logic-cost savings in implementing an increasing as opposed to a non-increasing filter.

Information terminal and base station

Abstract: PROBLEM TO BE SOLVED: To realize a conversation in real time between a person with hearing difficulties and a hearing able-bodied person. SOLUTION: The information terminal is equipped with a speech recognition section 22 which recognizes speech, a sign language image conversion section 23 which converts the recognized speech to a sign language image by referencing the correspondence table of the speech signal and the sign language image, an image display element 24 which displays the converted sign language image, an image photographing section 25 which photographs the image, a sign language recognition section 26 which recognizes the sign language information from the photographed image, a sign language-speech conversion section 27 which converts the recognized sign language information to speech by referencing the correspondence table of the sign language information and the speech information, and a communication controller 21 which communicatably outputs the converted speech. COPYRIGHT: (C)2006,JPO&NCIPI

Adaptive format conversion for scalable video coding

Abstract: The enhancement layer in many scalable coding algorithms is composed of residual coding information. There is another type of information that can be transmitted instead of (or in addition to) residual coding. Since the encoder has access to the original sequence, it can utilize adaptive format conversion (AFC) to generate the enhancement layer and transmit the different format conversion methods as enhancement data. This paper investigates the use of adaptive format conversion information as enhancement data in scalable video coding. Experimental results are shown for a wide range of base layer qualities and enhancement bitrates to determine when AFC can improve video scalability. Since the parameters needed for AFC are small compared to residual coding, AFC can provide video scalability at low enhancement layer bitrates that are not possible with residual coding. In addition, AFC can also be used in addition to residual coding to improve video scalability at higher enhancement layer bitrates. Adaptive format conversion has not been studied in detail, but many scalable applications may benefit from it. An example of an application that AFC is well-suited for is the migration path for digital television where AFC can provide immediate video scalability as well as assist future migrations.

Automatic conversion system of graphic picture

Abstract: PURPOSE:To perform conversion processing to graphic elements to obtain converted graphic picture by extracting positions of graphic elements such as character string, enclosed block including character, and lines, etc from a graphic picture to be inputted CONSTITUTION:A graphic picture is inputted to an input part 1 of automatic conversion system of a drawing image and an outlined structure of inputted drawing image is extracted by a structure grasping part 2 The part 2 is connected with a conversational part 3 interacting with the operator and the outlined structure extracted through the part 2 is applied to an image conversion part 4 The conversion part 4 is applied with a command from the operator through part 3 and performs the image conversion based on the command The conversion part 4 extracts the positions of graphic elements such as character string, enclosed block including character, and lines, etc and applies the conversion processing to the graphic elements to output a converted graphic picture from an output unit 5