Apparatus and method for image compositing
AssigneeHitachi Software Engineering Co., Ltd.
InventorsKeiho Akiyama, Kou Otokozawa, Shigehiro Fukase, Naoto Baba, Yoshihiro Naitou, Tohru Baba
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Abstract
The present invention provides an image compositing apparatus capable of producing a natural composite image, with a simple structure and a less occupying space. The present invention also provides a method for compositing an image by providing shadow-free conditions in a limited space for chroma-keying so that a subject image and a desired background image are naturally integrated as one image.
Claims17
An image compositing apparatus provided with a fare adjustment function comprising:
- light panels provided behind a subject and on a floor, which uniformly emit uniform light with predetermined hue, saturation and brightness distributions;
- a means for measuring the hue, saturation and brightness distributions of the light panels provided behind the subject and on the floor;
- a memory for memorizing the hue, saturation and brightness distributions of the light panels provided behind the subject and on the floor;
- an image extracting means for extracting a foreground image of the subject based on a color of the light panels behind and underneath the subject;
- an image compositing means for comparing and correcting hue, saturation, and brightness distributions of the foreground image with respect to hue, saturation, and brightness distributions of a background image, and compositing the foreground image with the background image to provide a composite image;
- and
- an image display device for displaying the composite image.
An image compositing method comprising the steps of:
- providing at least one light panel behind a subject which uniformly emit uniform light with predetermined hue, saturation and brightness distributions;
- extracting a foreground image of the subject;
- memorizing hue, saturation, and brightness distributions of a background image;
- and
- correcting hue, saturation, and brightness distributions of the foreground image with respect to the hue, saturation, and brightness distributions of the background image to provide a composite image.
A method for compositing a foreground image of a subject with a background image to produce a composite image comprising the steps of
- (a) providing light panels that uniformly emit light with a predetermined hue, saturation and brightness behind and underneath the subject;
- (b) measuring and storing hue, saturation, and brightness distributions of the foreground image in a memory of a computer;
- (c) measuring and storing hue, saturation, and brightness distributions of the background image in a memory of a computer;
- and
- (d) correcting the hue, saturation, and brightness distributions of the foreground image with respect to the hue, saturation, and brightness distributions of the background image, thereby compositing the foreground image with the background image to produce a composite image.
Dependencies are inferred from the claim text.