Image processing apparatus, image processing apparatus control method, image pickup apparatus, and image pickup apparatus control method
First Claim
Patent Images
1. An image processing apparatus comprising:
- one or more processors; and
a memory storing instructions which, when the instructions are executed by the processor, cause the image processing apparatus to function as;
an acquiring unit configured to acquire image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system;
a determining unit configured to determine distance information of the object image by using the image signals of the plurality of images; and
a conversion unit configured to perform resolution conversion of converting resolution of the distance information and output a result of the resolution conversion,wherein the conversion unit is configured to perform the resolution conversion of the distance information and output the result of the resolution conversion, by using a conversion characteristic that more gradations are allocated to distance information near an in-focus region as compared with distance information not near the in-focus region,wherein the conversion unit is configured to perform the resolution conversion by selectively determining the conversion characteristic from a plurality of conversion characteristics, andin case where an application for which distance resolution near the in-focus region is necessary is a destination of the output, the conversion unit is configured to determine the conversion characteristic as a conversion characteristic that more resolutions are allocated to the distance information near the in-focus region as compared with the distance information not near the in-focus region.
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Abstract
An image processing apparatus including an acquiring unit configured to acquire an image signal of a plurality of images obtained by picking up an object image that is formed by a photographing optical system; a determining unit configured to determine a defocus amount of the object image by using the image signal of the plurality of images; and a conversion unit configured to perform, on the defocus amount, gradation conversion that has at least one conversion characteristic out of a plurality of different conversion characteristics, and to output information that is based on the defocus amount converted by the gradation conversion.
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Citations
28 Claims
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1. An image processing apparatus comprising:
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one or more processors; and a memory storing instructions which, when the instructions are executed by the processor, cause the image processing apparatus to function as; an acquiring unit configured to acquire image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; a determining unit configured to determine distance information of the object image by using the image signals of the plurality of images; and a conversion unit configured to perform resolution conversion of converting resolution of the distance information and output a result of the resolution conversion, wherein the conversion unit is configured to perform the resolution conversion of the distance information and output the result of the resolution conversion, by using a conversion characteristic that more gradations are allocated to distance information near an in-focus region as compared with distance information not near the in-focus region, wherein the conversion unit is configured to perform the resolution conversion by selectively determining the conversion characteristic from a plurality of conversion characteristics, and in case where an application for which distance resolution near the in-focus region is necessary is a destination of the output, the conversion unit is configured to determine the conversion characteristic as a conversion characteristic that more resolutions are allocated to the distance information near the in-focus region as compared with the distance information not near the in-focus region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An image processing apparatus comprising:
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one or more processors; and a memory storing instructions which, when the instructions are executed by the processor, cause the image processing apparatus to function as; an acquiring unit configured to acquire image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; a determining unit configured to determine distance information of the object image by using the image signals of the plurality of images; and a conversion unit configured to perform resolution conversion of converting resolution of the distance information and output a result of the resolution conversion, wherein the conversion unit configured to perform the resolution conversion of the distance information and output the result of the resolution conversion, by using a conversion characteristic that gradations are asymmetrically allocated to distance information in front of and behind distance information of a focused object.
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19. An image processing apparatus comprising:
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one or more processors; and a memory storing instructions which, when the instructions are executed by the processor, cause the image processing apparatus to function as; an acquiring unit configured to acquire image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; a determining unit configured to determine distance information of the object image by using the image signals of the plurality of images; and a conversion unit configured to perform resolution conversion of converting resolution of the distance information and output a result of the resolution conversion, wherein the conversion unit is configured to perform the resolution conversion of the distance information and output the result of the resolution conversion, by using a conversion characteristic that resolution conversion varies depending on an F-value of a lens of the photographing optical system.
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20. An image processing apparatus comprising:
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one or more processors; and a memory storing instructions which, when the instructions are executed by the processor, cause the image processing apparatus to function as; an acquiring unit configured to acquire image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; a determining unit configured to determine distance information of the object image by using the image signals of the plurality of images; and a conversion unit configured to perform resolution conversion of converting resolution of the distance information and output a result of the resolution conversion, wherein the conversion unit is configured to perform the resolution conversion of the distance information and output the result of the resolution conversion, by using a conversion characteristic that, in accordance with an F-value of a lens of the photographing optical system, as the F-value becomes larger, gradations to be allocated to larger distance information are made fewer.
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21. An image processing apparatus comprising:
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one or more processors; and a memory storing instructions which, when the instructions are executed by the processor, cause the image processing apparatus to function as; an acquiring unit configured to acquire image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; a determining unit configured to determine distance information of the object image by using the image signals of the plurality of images; and a conversion unit configured to perform resolution conversion of converting resolution of the distance information and output a result of the resolution conversion, wherein the conversion unit is configured to perform the resolution conversion of the distance information and output the result of the resolution conversion, by using a conversion characteristic that resolution conversion varies depending on a base length in the pickup of the object image.
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22. An image processing apparatus comprising:
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one or more processors; and a memory storing instructions which, when the instructions are executed by the processor, cause the image processing apparatus to function as; an acquiring unit configured to acquire image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; a determining unit configured to determine distance information of the object image by using the image signals of the plurality of images; and a conversion unit configured to perform resolution conversion of converting resolution of the distance information and output a result of the resolution conversion, wherein the conversion unit is configured to perform the resolution conversion of the distance information and output the result of the resolution conversion, by using a conversion characteristic that resolution conversion varies depending on an ISO sensitivity in the pickup of the object image.
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23. An image processing method comprising:
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acquiring image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; determining distance information of the object image by using the image signals of the plurality of images; and performing resolution conversion of converting resolution of the distance information and outputting a result of the resolution conversion, wherein the resolution conversion of the distance information is performed and the result of the resolution conversion is output, by using a conversion characteristic that more gradations are allocated to distance information near an in-focus region as compared with distance information not near the in focus region, wherein performing the resolution conversion includes selectively determining the conversion characteristic from a plurality of conversion characteristics, and in a case where an application for which distance resolution near the in-focus region is necessary is a destination of the output, determining the conversion characteristic as a conversion characteristic that more resolutions are allocated to the distance information near the in-focus region as compared with the distance information not near the in-focus region.
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24. An image processing method comprising:
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acquiring image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; determining distance information of the object image by using the image signals of the plurality of images; and performing resolution conversion of converting resolution of the distance information and outputting a result of the resolution conversion, wherein the resolution conversion of the distance information is performed and the result of the resolution conversion is output, by using a conversion characteristic that gradations are asymmetrically allocated to distance information in front of and behind distance information of a focused object.
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25. An image processing method comprising:
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acquiring image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; determining distance information of the object image by using the image signals of the plurality of images; and performing resolution conversion of converting resolution of the distance information and outputting a result of the resolution conversion, wherein the resolution conversion of the distance information is performed and the result of the resolution conversion is output, by using a conversion characteristic that resolution conversion varies depending on an F-value of a lens of the photographing optical system.
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26. An image processing method comprising:
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acquiring image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; determining distance information of the object image by using the image signals of the plurality of images; and performing resolution conversion of converting resolution of the distance information and outputting a result of the resolution conversion, wherein the resolution conversion of the distance information is performed and the result of the resolution conversion is output, by using a conversion characteristic that, in accordance with an F-value of a lens of the photographing optical system, as the F-value becomes larger, gradations to be allocated to larger distance information are made fewer.
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27. An image processing method comprising:
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acquiring image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; determining distance information of the object image by using the image signals of the plurality of images; and performing resolution conversion of converting resolution of the distance information and outputting a result of the resolution conversion, wherein the resolution conversion of the distance information is performed and the result of the resolution conversion is output, by using a conversion characteristic that resolution conversion varies depending on a base length in the pickup of the object image.
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28. An image processing method comprising:
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acquiring image signals of a plurality of images acquired by picking up an object image formed by a photographing optical system; determining distance information of the object image by using the image signals of the plurality of images; and performing resolution conversion of converting resolution of the distance information and outputting a result of the resolution conversion, wherein the resolution conversion of the distance information is performed and the result of the resolution conversion is output, by using a conversion characteristic that resolution conversion varies depending on an ISO sensitivity in the pickup of the object image.
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Specification