Apparatus and method for combining images
First Claim
1. An image composition apparatus comprising:
- an image acquiring unit configured to acquire incident light and generate a first image signal with color information and a second image signal comprising a wider band than the first image signal and including infrared components and black-and-white components where the black-and-white components are generated based on a combination of color signals from the color information of the first image signal;
an image signal divider configured to divide the first image signal into a color signal and a brightness signal that does not include color;
a dynamic bandwidth adjusting unit to equalize dynamic bandwidths of the first image signal and the second image signal;
a brightness composer configured to combine the divided brightness signal that does not include color of the first image signal with a brightness signal of the second image signal comprising the wider band and including the black-and-white components and the infrared components, based on a brightness combination rule, to generate a combined brightness signal; and
an image restoring unit configured to compose the combined brightness signal with the color signal of the first image signal to generate a color image.
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Abstract
Provided are an image composition apparatus for composing color images with black-and-white images including infrared components, and an image composition method thereof. The image composition method includes generating a first image signal with color information and a second image signal including infrared components without color information, dividing the first image signal into a brightness signal and a color signal, composing the brightness signal of the first image signal with a brightness signal of the second image signal to generate a composed brightness signal, and composing the composed brightness signal with the color signal of the first image signal to generate a color image.
27 Citations
12 Claims
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1. An image composition apparatus comprising:
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an image acquiring unit configured to acquire incident light and generate a first image signal with color information and a second image signal comprising a wider band than the first image signal and including infrared components and black-and-white components where the black-and-white components are generated based on a combination of color signals from the color information of the first image signal; an image signal divider configured to divide the first image signal into a color signal and a brightness signal that does not include color; a dynamic bandwidth adjusting unit to equalize dynamic bandwidths of the first image signal and the second image signal; a brightness composer configured to combine the divided brightness signal that does not include color of the first image signal with a brightness signal of the second image signal comprising the wider band and including the black-and-white components and the infrared components, based on a brightness combination rule, to generate a combined brightness signal; and an image restoring unit configured to compose the combined brightness signal with the color signal of the first image signal to generate a color image. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image composition method in an image composition apparatus, the method comprising:
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generating, by an image sensor, a first image signal with color information and a second image signal comprising a wider band than the first image signal and including infrared components and black-and-white components where the black-and-white components are generated based on a combination of color signals from the color information of the first image signal; dividing the first image signal into a color signal and a brightness signal that does not include color; equalizing dynamic bandwidths of the first image signal and the second image signal; combining the divided brightness signal that does not include color of the first image signal with a brightness signal of the second image signal comprising the wider band and including the black-and-white components and the infrared components without color information, based on a brightness combination rule, to generate a combined brightness signal; and composing the combined brightness signal with the color signal of the first image signal to generate a color image. - View Dependent Claims (9, 10, 11, 12)
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Specification