Focus detecting apparatus, image pickup apparatus, focus detecting method, and storage medium
地域：
Tokyo
摘要
A focus detecting apparatus includes a first determining unit configured to determine an image stabilizing area based on object information, and a second determining unit configured to determine a focus detecting area based on the object information, and to determine a calculation area for focus detection based on the focus detecting area. The second determining unit determines the calculation area based on a relationship between the image stabilizing area and the focus detecting area.
說明書
One of the aspects of the disclosure relates to a focus detecting apparatus and an image pickup apparatus.
There has conventionally been known a focus detecting apparatus that detects an object and performs focus detection. Japanese Patent Laid-Open No. (“JP”) 2015-22058 discloses a focus detecting method for setting a field length and a read position of an image signal for focus detection based on a position and size of a detected object. JP 2021-152600 discloses a method for avoiding a (perspective conflict) phenomenon in which the background is focused instead of an object in a case where a focus detecting area goes out of the object. JP 2018-36366 discloses an image stabilizing apparatus that performs control so as to always capture an object within an angle of view in a case where the object in the captured image is blurred (object blur).
In a case where different controls are performed for the object as an object image stabilization target disclosed in JP 2018-36366 and the object as a focus detection target disclosed in JPs 2015-22058 and 2021-152600, the object is likely to go out of the focus detecting area. This is because the object image stabilization negatively reflects a transfer of the object so as to prevent the imaging quality from being lowered, whereas the focus detection needs control that continues focusing by sensitively responding to the transfer of the object.
One of the aspects of the disclosure provides a focus detecting apparatus that can perform highly accurate focus detection while performing object image stabilization.
權(quán)利要求
What is claimed is:1. A focus detecting apparatus comprising at least one processor, and a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, perform operations as:a first determining unit configured to determine an image stabilizing area based on object information; and a second determining unit configured to determine a focus detecting area based on the object information, and to determine a calculation area for focus detection based on the focus detecting area, wherein the second determining unit determines the calculation area based on a relationship between the image stabilizing area and the focus detecting area, and wherein in a case where the image stabilizing area is an entire image, the calculation area is smaller than an object in the object information. 2. The focus detecting apparatus according to claim 1 , wherein the instructions further perform operations as an image stabilizing unit configured to perform image stabilization based on the image stabilizing area. 3. The focus detecting apparatus according to claim 1 , wherein the instructions further perform operations as a calculating unit configured to calculate an image shift amount between image signals in the calculation area. 4. The focus detecting apparatus according to claim 1 , wherein the object information includes information about at least one of a position, size, reliability, and type of the object. 5. A focus detecting apparatus comprising at least one processor, and a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, perform operations as:a first determining unit configured to determine an image stabilizing area based on object information; and a second determining unit configured to determine a focus detecting area based on the object information, and to determine a calculation area for focus detection based on the focus detecting area, wherein the second determining unit determines the calculation area based on a relationship between the image stabilizing area and the focus detecting area, and wherein the calculation area in a case where the image stabilizing area and the focus detecting area are the same is larger than that in a case where the image stabilizing area and the focus detecting area are different. 6. A focus detecting apparatus comprising at least one processor, and a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, perform operations as:a first determining unit configured to determine an image stabilizing area based on object information; and a second determining unit configured to determine a focus detecting area based on the object information, and to determine a calculation area for focus detection based on the focus detecting area, wherein the second determining unit determines the calculation area based on a relationship between the image stabilizing area and the focus detecting area, and wherein the calculation area in a case where the focus detecting area is part of the image stabilizing area is larger than in a case where the image stabilizing area and the focus detecting area are different. 7. A focus detecting apparatus comprising at least one processor, and a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, perform operations as:a first determining unit configured to determine an image stabilizing area based on object information; and a second determining unit configured to determine a focus detecting area based on the object information, and to determine a calculation area for focus detection based on the focus detecting area, wherein the second determining unit determines the calculation area based on a relationship between the image stabilizing area and the focus detecting area, and wherein the calculation area in a case where the image stabilizing area and the focus detecting area are related object types is larger than that in a case where the image stabilizing area and the focus detecting area are not related object types. 8. An image pickup apparatus comprising:an image sensor; and a focus detecting apparatus, wherein the focus detecting apparatus includes at least one processor, and a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, perform operations as: a first determining unit configured to determine an image stabilizing area based on object information; and a second determining unit configured to determine a focus detecting area based on the object information, and to determine a calculation area for focus detection based on the focus detecting area, wherein the second determining unit determines the calculation area based on a relationship between the image stabilizing area and the focus detecting area, and wherein in a case where the image stabilizing area is an entire image, the calculation area is smaller than an object in the object information. 9. A focus detecting method comprising:a first determining step configured to determine an image stabilizing area based on object information; and a second determining step configured to determine a focus detecting area based on the object information, and to determine a calculation area for focus detection based on the focus detecting area, wherein the second determining step determines the calculation area based on a relationship between the image stabilizing area and the focus detecting area, and wherein in a case where the image stabilizing area is an entire image, the calculation area is smaller than an object in the object information. 10. A non-transitory computer-readable storage medium storing a program for causing a computer to execute the focus detecting method according to claim 9 . 11. The focus detecting apparatus according to claim 5 , wherein the instructions further perform operations as an image stabilizing unit configured to perform image stabilization based on the image stabilizing area. 12. The focus detecting apparatus according to claim 5 , wherein the instructions further perform operations as a calculating unit configured to calculate an image shift amount between image signals in the calculation area. 13. The focus detecting apparatus according to claim 5 , wherein the object information includes information about at least one of a position, size, reliability, and type of the object. 14. The focus detecting apparatus according to claim 6 , wherein the instructions further perform operations as an image stabilizing unit configured to perform image stabilization based on the image stabilizing area. 15. The focus detecting apparatus according to claim 6 , wherein the instructions further perform operations as a calculating unit configured to calculate an image shift amount between image signals in the calculation area. 16. The focus detecting apparatus according to claim 6 , wherein the object information includes information about at least one of a position, size, reliability, and type of the object. 17. The focus detecting apparatus according to claim 7 , wherein the instructions further perform operations as an image stabilizing unit configured to perform image stabilization based on the image stabilizing area. 18. The focus detecting apparatus according to claim 7 , wherein the instructions further perform operations as a calculating unit configured to calculate an image shift amount between image signals in the calculation area. 19. The focus detecting apparatus according to claim 7 , wherein the object information includes information about at least one of a position, size, reliability, and type of the object.
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