Method for modifying a visible object shot with a television camera
AssigneeVirtual Advertising Systems VAS Ltd.
InventorErkki Rantalainen
Life of this patent
Estimating the term…
Abstract
A method for modifying a visible object shot with a television camera, in which method the object is marked by one or more marking surfaces disposed in the area of the object or in its vicinity, these marking surfaces being identifiable on the basis of radiation differing from other radiation in the area being shot. At least one of the marking surfaces differs in radiation from the environment on the basis of a property other than the color of visible light. The marking surface is identified using at least one identifying detector which is separate from the detectors of the television camera and by means of which the object is shot substantially from the same shooting direction as the picture shot by the television camera.
Claims22
Method for modifying a visible object shot with a television camera, characterized in that
- the object is marked by means of one or more marking surfaces disposed in the area of the object or in its vicinity, said marking surfaces being identifiable on the basis of radiation differing from other radiation in the area being shot, at least one of said marking surfaces differing in radiation from the environment on the basis of a property other than the color of visible light,
- the marking surfaces, which are visible in the picture, are identified using at least one identifying detector which is separate from the detectors of the television camera and by means of which the object is shot substantially from the same shooting direction with the television camera,
- the location, shape and size of the areas of the object that are visible in the television picture are determined by the known relationship between the picture coordinates of the television camera and those of the identifying detector or detectors,
- the video signal of the television picture for the areas corresponding to the visible areas of the object is modified in a predetermined manner.
Method for modifying a visible object shot with a television camera, in which
- the object is marked by means of a marking surface disposed in the area of the object, said marking surface being identifiable on the basis of radiation differing from other radiation in the area being shot, said marking surface differing in radiation from the environment on the basis of a property other than the color of visible light,
- the marking surface is identified using at least one identifying detector which is separate from the detectors of the television camera and by means of which the object is shot substantially from the same shooting direction with the television camera,
- the relationship between the picture coordinates of the television camera and those of the identifying detector is determined,
- the areas of the object that are visible in the television picture are determined by the marking surface detected,
- the video signal of the television picture for the areas corresponding to the object is modified in a predetermined manner, characterized in that
- the picture is focused to the identifying detector by means of the same objective as to the television camera, with the result that the relationship between the picture coordinates of the identifying detector and those of the television camera remain constant when the camera is turned or when the shooting distance or zooming changes and
- the object to be modified and being shot is a relatively small and moving object whose visibility in the television picture is improved by enhancing or altering the shades of color of the object in the television picture.
Dependencies are inferred from the claim text.