Image mixing method, and mixed image data generation device
First Claim
1. An image mixing method of mixing first digital image data and second digital image data at a ratio defined in units of a pixel by mixing-ratio information, the method comprising the steps of:
- embedding, in each of pixel data formed from a plurality of bits in the first digital image data, the mixing-ratio information as information of more than one bit in the pixel data;
separating the mixing-ratio information from the first digital image data; and
mixing the first and second digital image data at a ratio defined by the separated mixing-ratio information.
1 Assignment
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Accused Products
Abstract
To mix first and second digital image data at a ratio defined by pixel-unit mixing-ratio information, mixing-ratio information is embedded, in each of pixel data formed from a plurality of bits in the first digital image data, as information of more than one bit in the pixel data. The mixing-ratio information is extracted from the first digital image data. The first and second digital image data are mixed at the ratio defined by the extracted mixing-ratio information. Thus, images can be mixed together with the α blending technique without having to use any special memory such as the α memory.
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Citations
10 Claims
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1. An image mixing method of mixing first digital image data and second digital image data at a ratio defined in units of a pixel by mixing-ratio information, the method comprising the steps of:
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embedding, in each of pixel data formed from a plurality of bits in the first digital image data, the mixing-ratio information as information of more than one bit in the pixel data;
separating the mixing-ratio information from the first digital image data; and
mixing the first and second digital image data at a ratio defined by the separated mixing-ratio information. - View Dependent Claims (2)
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3. A method of mixing first and second digital image data at a ratio defined in units of a pixel by mixing-ratio information read from a mixing-ratio table memory having a plurality of mixing-ratio information stored therein, the method comprising the steps of:
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embedding, in each of pixel data formed from a plurality of bits in the first digital image data, mixing-ratio selection data for selectively reading the mixing-ratio information from the mixing-ratio table memory as information of more than one bit in the pixel data;
separating the mixing-ratio selection data from the first digital image data;
reading the mixing-ratio information from the mixing-ratio table memory on the basis of the separated mixing-ratio information and in units of a pixel; and
mixing the first and second digital image data at the ratio defined by the read mixing-ratio information. - View Dependent Claims (4)
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5. A mixed image data generation device for mixing first digital image data and second digital image data at a ratio defined in units of a pixel by mixing-ratio information to generate a display image data, the device comprising:
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a separating means for separating the mixing-ratio information embedded, in each of pixel data formed from a plurality of bits in the first digital image data, as information of more than one bit in the pixel data; and
a mixing means for mixing the first and second digital image data at a ratio defined by the mixing-ratio information separated by the separating means. - View Dependent Claims (6)
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7. A mixed image data generation device for mixing first and second digital image data at a ratio defined in units of a pixel by mixing-ratio information to generate display image data, the device comprising:
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a mixing-ratio table memory having a plurality of the mixing-ratio information stored therein;
a separating means for separating mixing-ratio selection data for selectively reading the mixing-ratio information from the mixing-ratio table memory, embedded as information of more than one bit in the pixel data, in each of pixel data formed from a plurality of bits in the first digital image data;
a means for reading the mixing-ratio information from the mixing-ratio table memory on the basis of the mixing-ratio information separated by the separating means and in units of a pixel; and
a mixing means for mixing the first and second digital image data at the ratio defined by the read mixing-ratio information. - View Dependent Claims (8)
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9. A mixed image data generation device for mixing first digital image data and second digital image data at a ratio defined in units of a pixel by mixing-ratio information to generate a display image data, the device comprising:
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a separator for separating the mixing-ratio information embedded, in each of pixel data formed from a plurality of bits in the first digital image data, as information of more than one bit in the pixel data; and
a mixer for mixing the first and second digital image data at a ratio defined by the mixing-ratio information separated by the separator.
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10. A mixed image data generation device for mixing first and second digital image data at a ratio defined in units of a pixel by mixing-ratio information to generate display image data, the device comprising:
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a mixing-ratio table memory having a plurality of the mixing-ratio information stored therein;
a separator for separating mixing-ratio selection data for selectively reading the mixing-ratio information from the mixing-ratio table memory, embedded as information of more than one bit in the pixel data, in each of pixel data formed from a plurality of bits in the first digital image data;
a unit for reading the mixing-ratio information from the mixing-ratio table memory on the basis of the mixing-ratio information separated by the separator and in units of a pixel; and
a mixer for mixing the first and second digital image data at the ratio defined by the read mixing-ratio information.
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Specification