Generating image data
First Claim
Patent Images
1. A method of generating image data, wherein a plurality of elements are defined in three dimensional space;
- whereinselected elements are set as being non-occluding;
light emission values for said elements are determined by calculating the effect of light reflections between said elements; and
an accumulated level of light is reduced in response to the visibility of elements including at least one of said non-occluding elements and in accordance with the formula wherein B represents a flux density of an element E, R represents a reflectance of the element E, and F represents a form factor.
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Abstract
Image data is generated by a process of radiosity, wherein a plurality of elements are defined in three dimensional space. Selected elements are set as being non-occluding and light emission values for said elements are determined by calculating the effect of light reflections between the elements. An accumulated total level of light is adjusted in response to the visibility of elements including at least one of said non-occluding elements.
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Citations
12 Claims
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1. A method of generating image data, wherein a plurality of elements are defined in three dimensional space;
- wherein
selected elements are set as being non-occluding;
light emission values for said elements are determined by calculating the effect of light reflections between said elements; and
an accumulated level of light is reduced in response to the visibility of elements including at least one of said non-occluding elements and in accordance with the formula wherein B represents a flux density of an element E, R represents a reflectance of the element E, and F represents a form factor. - View Dependent Claims (2, 3, 4)
- wherein
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5. Apparatus for generating image data, including storage means and processing means, wherein data stored in storage means defines a plurality of elements in three dimensional space, and instructions in storage means are arranged to configure said processing means to perform the steps of:
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defining selected elements as being non-occluding; and
calculating light emission values for said elements by simulating the effect of light reflections between said elements;
whereinan accumulated level of light is reduced in response to the visibility of elements including at least one of said non-occluding elements and in accordance with the formula wherein B represents a flux density of an element E, R represents a reflectance of the element E, and F represents a form factor. - View Dependent Claims (6, 7, 8)
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9. In a virtual set, in which real foreground images are combined with synthesized background images in real time, means configured to generate said background image data, wherein
a plurality of elements are defined in three-dimensional space; -
selected elements are set as being non-occluding;
light emission values for said elements are determined by calculating the effect of light reflections between said elements; and
an accumulated level of light is reduced in response to the visibility of elements including at least one of said non-occluding elements and in accordance with the formula wherein B represents a flux density of an element E, R represents a reflectance of the element E, and F represents a form factor. - View Dependent Claims (10)
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11. A computer-readable medium having computer-readable instructions executable by a computer such that said computer performs the steps of:
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reading element data defined in three-dimensional space;
identifying selected occluding elements as being non-occluding;
calculating the effect of light reflections between said elements to determine light emission values for said elements; and
reducing an accumulation of light levels in response to the visibility of elements including at least of one said non-occluding elements and in accordance with the formula wherein B represents a flux density of an element E, R represents a reflectance of the element E, and F represents a form factor. - View Dependent Claims (12)
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Specification