Video-conference terminal device, video-conference system, image distortion correction method, and image distortion correction processing program product

摘要

A local video-conference terminal device includes a wide-angle camera lens, a camera image correction control unit that performs distortion correction processing on an image included in digital video signal from the wide-angle camera lens, a camera image correction table storage unit including correction tables for the distortion correction processing regarding a partial area of the image, a video display unit displaying the digital video signal after distortion correction, and a camera display switching key outputting a signal to select an image correction table. The camera image correction control unit performs the distortion correction processing on the image included in digital video signal using the image correction table selected by switching through the camera display switching key.

主权项

1. A video-conference terminal device, comprising:
a wide-angle camera comprising a wide-angle camera lens; a first control unit that receives a digital video signal from the wide-angle camera and performs distortion correction processing on an image included in the digital video signal; a memory that stores therein image correction information used when the first control unit performs the image distortion correction processing, the image correction information comprising at least information for specifying a plurality of areas in the image included in the digital video signal from the wide-angle camera, the plurality of specified areas being determined in advance, the image correction information including a plurality of pieces of image correction information, and each of the plurality of pieces of image correction information being stored in association with a corresponding one of the plurality of areas; a second control unit that transmits images of the plurality of specified areas on which the distortion correction has been performed to another video-conference terminal device coupled to a network; a providing unit that provides the images of the plurality of specified areas on which the distortion correction has been performed; and an operating unit that switches pieces of the image correction information stored in the memory and outputs the information every time being operated, some or all of the plurality of areas being selected when the operating unit is operated, and, in response to the selection of the areas, pieces of image correction information corresponding to the selected area being selected from the plurality of pieces of image correction information, wherein the first control unit performs distortion correction processing on the image including the plurality of specified areas using a piece of the image correction information that has been selected by the operating unit.