Video image creation system which simulates drafting tool
First Claim
1. A video image creation system comprising:
- drafting means operable by an operator to designate positions on a desired line in the image;
means for providing shape signals relating to a patch of image points, said shape signals having different values to simulate the distribution of drafting medium produced by a notional drafting tool;
a store for picture point signals having storage locations representing points of the image;
processing means responsive to operation of said drafting means for producing for each designated position of group of image signals which are a function of said shape signals;
means for storing said image signals at storage locations of said store determined by the designated position and by the position of the image points in said patch; and
means for reading signals from said store to produce a sequence of signals adapted for the reproduction of the image.
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Accused Products
Abstract
A video image creation system provides intensity or color data from one or more stores. The image is created under manual control which effectively defines the coordinates of the artist'"'"'s implement at any given time.
A processor receives the incoming image data and previously derived data from a frame store and modifies this data in dependence on a parameter available from another store. The created image can be viewed on a monitor.
The parameter controls the contribution made from any adjacent, previously created, parts of the image and can be such as to simulate different pencil or brush shapes or types of paint for example. Additional facilities such as pressure sensitivity and blurring can be provided.
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Citations
19 Claims
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1. A video image creation system comprising:
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drafting means operable by an operator to designate positions on a desired line in the image; means for providing shape signals relating to a patch of image points, said shape signals having different values to simulate the distribution of drafting medium produced by a notional drafting tool; a store for picture point signals having storage locations representing points of the image; processing means responsive to operation of said drafting means for producing for each designated position of group of image signals which are a function of said shape signals; means for storing said image signals at storage locations of said store determined by the designated position and by the position of the image points in said patch; and means for reading signals from said store to produce a sequence of signals adapted for the reproduction of the image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A video image creation system comprising:
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drafting means operable by an operator to designate points on a desired image; means for producing first signals representing a characteristic to be imparted to the image at said points; a store having storage locations corresponding to points on the image; processing means for producing for each point designated by said drafting means a new image signal which is a function of said first signal and of a previous image signal for the same point; means for storing the new image signal at the location in said store corresponding to the respective point; and means for reading image signals from said store to produce an image corresponding to the stored signals; said drafting means comprising a touch tablet and a stylus; said means for producing first signals comprising means for producing signals representing the point on the touch tablet touched by the stylus to designate points on the desired image, and further means are provided for causing said processing means to produce for each point designated by the drafting means a series of new image signals related in number to the time for which the stylus continues to touch a particular point on the tablet.
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19. A video creation system comprising:
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drafting means operable by an operator to designate a series of points on a line of a desired image; means for producing for each point designated by said drafting means a plurality of first signals representing a characteristic to be imparted to the image at a plurality of image points defining a patch of image points; a store having storage locations corresponding to the points on the image; processing means for producing for each image point in the patch a new image signal which is a function of the respective first signal and of a previous image signal stored at the location in said store corresponding to the respective image point, said location being determined by the point designated by the drafting means and by the position of the image point in the patch; means for storing the new image signals at the said store; and means for reading signals from said store for producing an image signal corresponding to the stored image signals; said processing means is arranged to cause said new image signal to be a different function of the respective first signal for different image points in the patch so as to simulate the distribution of drafting medium produced by the notional drafting tool; means for storing a plurality of shape signals representing the distribution ability of each of a plurality of notional drafting tools, and means for selecting one of said pluralities of said shape signals, said processing means being responsive to the selected shape signals to determine the functional relationship between the first signals on the one hand and the previous image signal on the other.
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Specification