Projection video display apparatus and video display method
First Claim
1. A projection video display apparatus controllable by a user operation of an object on a projection surface, the projection video display apparatus comprising:
- a projector configured to project a display video onto the projection surface;
a camera configured to capture the projection surface;
a user operation detector configured to detect the object, via the projection surface, based on the image data captured by the camera; and
an operable region specifying circuit configured to specify each of a first region where the object is detectable and a second region where the object is undetectable in a range in which the display video is projected on the projection surface, based on luminance levels of the image data captured by the camerawherein an area of the first region and an area of the second region are changed by an influence of irradiation of external light, andwherein the projector is configured to project the display video in which the first region is displayed so as to be distinguished from the second region, and to change a display position of the object so that the object is displayed within a range of the first region where the object via the project surface is detectable.
4 Assignments
0 Petitions
Accused Products
Abstract
An operation target device projects a display video onto a projection surface, which is captured by a camera. An operation detectable region specifying unit specifies respective regions where an operation is detectable and is undetectable based on image data captured by the camera. Finger and pen contact position detection units detect the operation to the operation object based on the image data captured by the camera. The operation target device displays the display video so that the region where the operation to the operation object is detectable, which is specified by the operation detectable region specifying unit, is distinguished from the region where the operation to the operation object is undetectable. In addition, the operation target device changes a display position of the operation object so that the operation object is displayed within a range of the region where the operation to the operation object is detectable.
24 Citations
6 Claims
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1. A projection video display apparatus controllable by a user operation of an object on a projection surface, the projection video display apparatus comprising:
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a projector configured to project a display video onto the projection surface; a camera configured to capture the projection surface; a user operation detector configured to detect the object, via the projection surface, based on the image data captured by the camera; and an operable region specifying circuit configured to specify each of a first region where the object is detectable and a second region where the object is undetectable in a range in which the display video is projected on the projection surface, based on luminance levels of the image data captured by the camera wherein an area of the first region and an area of the second region are changed by an influence of irradiation of external light, and wherein the projector is configured to project the display video in which the first region is displayed so as to be distinguished from the second region, and to change a display position of the object so that the object is displayed within a range of the first region where the object via the project surface is detectable. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification