Hitachi, Ltd.

Kiyoshi Arai

Kiyoshi Inoue

Akira Ichikawa

Takanori Shimura

Hirohiko Sagawa

Yuji Toda

Masahiro Abe

Hiroshi Sakou

Youichi Horii

Yoichi Horii

Auxiliary figures superscribed on an original picture displayed on a display are moved and deformed conforming to a clue of a perspective view of an original picture so as to obtain a vanishing point automatically, and three-dimensional information of the original picture is estimated. Further, a camera angle is set up by moving and deforming an auxiliary figure for setting up three-dimensional information, and a picture at that camera angle is formed. It is possible to convert an original picture into a picture seen from a desired camera angle easily. It becomes possible, when a three-dimensional picture is formed, to convert a two-dimensional picture into a picture seen from another visual point on a computer without requiring a picture from the front and while maintaining the resolution of the perspective view as is with the perspective view as an original picture.

Picture conversion method and medium used therefor

In continuous sign language recognition, reference sign language patterns of good quality are generated. Continuous sign language patterns and reference sign language patterns are efficiently compressed. The compressed continuous sign language patterns are sequentially and directly matched with the compressed reference sign language patterns to recognize the sign language at high speed and with high precision. A reference sign pattern generating unit generates a reference sign language pattern by normalizing sample patterns while taking into consideration of their nonlinear compression/expansion and by calculating an average of the sample patterns. A continuous sign language recognition unit recognizes a continuous sign language at high speed by sequentially matching the continuous sign language of time sequential patterns with reference sign language patterns while allowing nonlinear expansion and compression in the time domain. A sign language translation system is provided in which a sign language as well as the facial expression or emotion of a sign language user is recognized and converted into a spoken language with emotion, and transferred in the form of texts, voices, sign languages of another type to a particular partner among a plurality of unknown system users.

Sign recognition apparatus and method and sign translation system using

A method, apparatus and computer program for generating a perspective projection of a three-dimensional object compatible with a two-dimensional perspective background image. In the invention rectangular parallelepiped guide figure is displayed on a two-dimensional background image. According to inputs from a user, a rectangular parallelepiped guide figure manipulation routine deforms and moves the rectangular parallelepiped guide figure. Once the rectangular parallelepiped has been manipulated to correspond to key features of the background image, a camera angle calculation routine calculates the camera angle, such as the eye position, the viewing direction and the field of view angle for the rectangular parallelepiped guide figure. Using the calculated camera angle, a perspective drawing of a three-dimensional object compatible with the two-dimensional perspective background image is generated.

Method of supporting perspective projection

In a sign-language learning system, the data of sign-language desired by a learner can be outputted quickly and accurately and, moreover, in the display method matching the requirements of individual learners, and the individual learners can easily make additional registration. The sign-language data are stored in a sign-language dictionary, and desired sign-language data are searched on the basis of an entry word or contents by a dictionary search device. The searched sign-language data are displayed in a display output device in accordance with a requirement of a learner by image synthesis. The sign-language data are registered by a dictionary registration device.

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Hachioji, Japan

Kiyoshi Arai