Browse Prior Art Database

Original Publication Date: 1999-Sep-01
Included in the Prior Art Database: 2003-Jun-18

Publishing Venue



A progam is disclosed that restricts the visible portion of an still or motion digital image. The visibility is restricted at all times to prevent illegal copying of the image by means of capturing or otherwise such as printing or taking a picture. llegal capture prevention is requred in many cases since many copyright owners of the image do not want their images to be captured and misused, but want to show their images in good quality for commercial or non-commercial purposes. Visible portion(s) may be regarded as a "window". The window will move within the image in a certain random fashion where it is difficult to predict the next position of the window. Previous methods of image capturing either degraded the quality of the image or lacked portability and/or lacked security. Typical implementation of this method are as follows. 1) The window will theoretically cover all the portions of the image over infinite period of time, assuring there are no portions that will never be seen. 2)The window will move in a near random fashion. 3)The window will move relatively to the previous position, so that the human eyes can follow the window rather easily. 4) The number of window is single, so that the human eyes will not be disturbed by multiple moving windows. 5)The shape of the window maybe of any shape but preferably rectangle to offload the calculation required. 6)The image does not move from its original position in any way, so that user will know where in position the window is relative to the image. 7)The window moves in a random fashion but chances of moving near the center of the image is higher than moving to the edge for visibility purpose. This is to avoid only being able to see the edge of the image for considerable amount of time.