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    • 1. 发明申请
    • System and method for control of audio field based on position of user
    • 基于用户位置的音频场控制系统及方法
    • US20050152565A1
    • 2005-07-14
    • US10754933
    • 2004-01-09
    • Norman JouppiSubramonlam IyerApril Slayden
    • Norman JouppiSubramonlam IyerApril Slayden
    • H04R5/02H04S3/00
    • H04R27/00H04S7/302
    • A system and method for control of an audio field based on the position of the user. In one embodiment, a system and a method for audio reproduction are provided. One or more audio signals are obtained that are representative of sounds occurring at a first location. The audio signals are communicated from the first location to a second location of a person. A position of the head of the person is determined in at least two dimensions at the second location by obtaining at least one image of the person. An audio field is reproduced at the second location from the audio signals, wherein sounds emitted by each means for reproducing are controlled based on the position of the head of the person. This may include controlling the volume of reproduction by each of a plurality of sound reproductions means based on the position of the head of the person. In another embodiment, delay associated with of reproduction may be controlled based on the position of the head of the person.
    • 一种用于基于用户的位置来控制音频场的系统和方法。 在一个实施例中,提供了用于音频再现的系统和方法。 获得代表在第一位置发生的声音的一个或多个音频信号。 音频信号从人的第一位置传送到第二位置。 通过获得人的至少一个图像,在第二位置处至少二维地确定人的头部的位置。 根据音频信号在第二位置再现音频场,其中基于人的头部的位置来控制由每个再现装置发出的声音。 这可以包括基于人的头部的位置来控制多个声音再现装置中的每一个的再现音量。 在另一个实施例中,可以基于人的头部的位置来控制与再现相关联的延迟。
    • 5. 发明授权
    • Head tracking and color video acquisition via near infrared luminance keying
    • 通过近红外亮度键控进行头跟踪和彩色视频采集
    • US06785402B2
    • 2004-08-31
    • US09784902
    • 2001-02-15
    • Norman JouppiSubramonium Iyer
    • Norman JouppiSubramonium Iyer
    • G06K900
    • G06F3/012G06K9/00261G06T7/12G06T7/246G06T2207/10048G06T2207/20132G06T2207/30201
    • A system and corresponding method for head tracking and color video acquisition via near infrared luminance keying is disclosed. The head of the local user is tracked in real time by uniformly illuminating a rear projection screen that surrounds a display cube with light having a wavelength in the near-infrared spectrum. A near-infrared image of the head of the local user is acquired by a near-infrared camera equipped with filters that discern the difference between the illuminated rear projection screen and any foreground illumination. A color image of the head of a local user and the projection of a remote location are acquired by a color camera, placed in close proximity to the near-infrared camera. A bounding box is then placed around the head of the local user in the near-infrared image. This bounding box is then translated to the view space of the color camera. This translated image is then used to crop the color image. The cropped color image is then transmitted to the remote location.
    • 公开了一种通过近红外亮度键控进行头跟踪和彩色视频采集的系统和相应方法。 通过用近红外光谱波长的光均匀地照射围绕显示立方体的背投屏幕,实时跟踪本地用户的头部。 本地用户的头部的近红外图像由装备有识别照明后投影屏幕和任何前景照明之间的差异的滤光器的近红外摄像机获取。 本地用户的头部的彩色图像和远程位置的投影由靠近近红外相机的彩色照相机获取。 然后在近红外图像中将边界盒放置在本地用户的头部周围。 然后将该边界框转换为彩色摄像机的视图空间。 然后使用此翻译图像裁剪彩色图像。 裁剪的彩色图像然后传输到远程位置。