Image processing apparatus and method
The present disclosure relates to an image processing apparatus and an image processing method capable of reducing an increase in a load imposed by processing of multispectral image data. Multispectral image data including components in four or more wavelength bands is simple-coded at a fixed compression rate. Alternatively, coded data generated by simple coding at a fixed compression rate for multispectral image data including components in four or more wavelength bands is simple-decoded. For example, the present disclosure is applicable to an image processing apparatus, an image coding apparatus, an image decoding apparatus, an imaging element, an imaging apparatus, or the like.
1. An image processing apparatus, comprising:
a pixel array configured to image an object and generate multispectral image data, wherein
the pixel array includes plural pixel patterns,
each of the plural pixel patterns including five or more pixels, and
the five or more pixels are arranged under a predetermined rule and photoelectrically converting light in wavelength bands different from each other; and
a Central Processing Unit (CPU) configured to perform simple coding at a fixed compression rate for the multispectral image data including components in four or more wavelength bands, wherein
the simple coding for the multispectral image data is performed by using a system that codes different image data generated by a different pixel array where plural different pixel patterns each different from the plural pixel patterns of the pixel array in pixel arrangement and number of constituent pixels are arranged, with use of a difference in pixel data between a pair of pixels belonging to the different pixel patterns different from each other and included in an identical wavelength band.
2. The image processing apparatus according to claim 1 , further comprising:
a transmission unit configured to transmit coded data generated by the simple coding performed for the multispectral image data by the CPU.
3. The image processing apparatus according to claim 1 , further comprising:
a storage unit configured to store coded data generated by the simple coding performed for the multispectral image data by the CPU.
4. The image processing apparatus according to claim 1 , wherein
each of the pixel patterns of the pixel array includes 16 pixels that photoelectrically convert light in the wavelength bands different from each other and are arranged such that pixels, of the five or more pixels, photoelectrically converting light in adjoining wavelength bands are arranged two pixels away from each other, and
the CPU is further configured to perform the simple coding for the multispectral image data generated by the pixel array, with use of a difference in pixel data between a pair of pixels arranged two pixels away from each other.
5. An image processing method, comprising:
imaging, by a pixel array, an object and generating multispectral image data, wherein
the pixel array includes plural pixel patterns,
each of the plural pixel patterns including five or more pixels, and
the five or more pixels are arranged under a predetermined rule and photoelectrically converting light in wavelength bands different from each other; and
simple coding, by a Central Processing Unit (CPU), at a fixed compression rate for the multispectral image data including components in four or more wavelength bands, wherein
the simple coding for the multispectral image data is performed by using a system that codes different image data generated by a different pixel array where plural different pixel patterns each different from the plural pixel patterns of the pixel array in pixel arrangement and number of constituent pixels are arranged, with use of a difference in pixel data between a pair of pixels belonging to the different pixel patterns different from each other and included in an identical wavelength band.
6. An image processing apparatus, comprising:
a pixel array configured to image an object and generate multispectral image data, wherein
the pixel array includes plural pixel patterns,
each of the plural pixel patterns including five or more pixels, and
the five or more pixels are arranged under a predetermined rule and photoelectrically converting light in wavelength bands different from each other; and
a Central Processing Unit (CPU) configured to:
perform simple coding at a fixed compression rate for the multispectral image data generated by the pixel array, to generate coded data, and
perform simple decoding for the coded data generated by the simple coding at the fixed compression rate for multispectral image data including components in four or more wavelength bands, wherein
the simple coding for the multispectral image data is performed by using a system that codes different image data generated by a different pixel array where plural different pixel patterns each different from the plural pixel patterns of the pixel array in pixel arrangement and number of constituent pixels are arranged, with use of a difference in pixel data between a pair of pixels belonging to the different pixel patterns different from each other and included in an identical wavelength band, and
the simple decoding for the coded data is performed by using a system that decodes coded data of the different image data with use of the difference in pixel data between the pair of pixels belonging to the different pixel patterns different from each other and included in the identical wavelength band.
7. The image processing apparatus according to claim 6 , further comprising:
a reception unit configured to receive the coded data, wherein
the CPU is further configured to perform the simple decoding for the coded data received by the reception unit.
8. The image processing apparatus according to claim 6 , further comprising:
a storage unit configured to store the coded data, wherein
the CPU is further configured to perform the simple decoding for the coded data read from the storage unit.
9. The image processing apparatus according to claim 6 , wherein
each of the pixel patterns of the pixel array includes 16 pixels that photoelectrically convert light in the wavelength bands different from each other and are arranged such that pixels, of the five or more pixels, photoelectrically converting light in adjoining wavelength bands are arranged two pixels away from each other,
the CPU is further configured to perform the simple coding for the multispectral image data generated by the pixel array, with use of a difference in pixel data between a pair of pixels arranged two pixels away from each other, and
perform the simple decoding for the coded data, with use of the difference in pixel data between the pair of pixels arranged two pixels away from each other.
10. An image processing method, comprising:
imaging, by a pixel array, an object and generate multispectral image data, wherein
the pixel array includes plural pixel patterns,
each of the plural pixel patterns including five or more pixels, and
the five or more pixels are arranged under a predetermined rule and photoelectrically converting light in wavelength bands different from each other; and
simple coding, by a Central Processing Unit (CPU), at a fixed compression rate for the multispectral image data generated by the pixel array, to generate coded data, and
simple decoding, by the CPU, for the coded data generated by the simple coding at the fixed compression rate for multispectral image data including components in four or more wavelength bands, wherein
the simple coding for the multispectral image data is performed by using a system that codes different image data generated by a different pixel array where plural different pixel patterns each different from the plural pixel patterns of the pixel array in pixel arrangement and number of constituent pixels are arranged, with use of a difference in pixel data between a pair of pixels belonging to the different pixel patterns different from each other and included in an identical wavelength band, and
the simple decoding for the coded data is performed by using a system that decodes coded data of the different image data with use of the difference in pixel data between the pair of pixels belonging to the different pixel patterns different from each other and included in the identical wavelength band.