-
公开(公告)号：US09948851B2
公开(公告)日：2018-04-17
申请号：US15258804
申请日：2016-09-07
Applicant: FUJIFILM Corporation
Inventor： Takashi Aoki , Yasuo Ohtsuki
CPC classification number: H04N5/23212 , G02B7/28 , G02B7/34 , H04N5/3696 , H04N5/378 , H04N9/045
Abstract: A phase difference AF processing unit (19) connects detection signals of phase difference detection pixels (52A) in an AF area (53), connects detection signals of phase difference detection pixels (52B) in the AF area (53), and performs a correlation operation with respect to detection signal groups after connection to generate a defocus amount when it is determined that a subject image formed in the AF area (53) includes a high frequency component. The phase difference AF processing unit (19) performs a correlation operation with respect to detection signal groups of phase difference detection pixels (52A, 52B) in each pair line in the AF area (53) to generate the defocus amount when it is determined that the subject image formed in the AF area (53) does not include a high frequency component.
-
Patent Agency Ranking
公开(公告)号：US09699372B2
公开(公告)日：2017-07-04
申请号：US15233079
申请日：2016-08-10
Applicant: FUJIFILM Corporation
Inventor： Takashi Aoki , Yasuo Ohtsuki
CPC classification number: H04N5/23212 , G02B7/34 , H04N5/3696
Abstract: A phase difference AF processing unit (19) calculates, through an operation using a detection signal group SA of phase difference detection pixels (52A) in an AF area (53), a detection signal group SB of phase difference detection pixels (52B), and a detection signal group SN of G pixels 51 in a row between a row including the phase difference detection pixels (52A) and a row including the phase difference detection pixels (52B), a third correlation value corresponding to a value obtained by adding up a first correlation value between the detection signal group SA and the detection signal group SN and a second correlation value between the detection signal group SB and the detection signal group SN, and generates a defocus amount Df1 from the third correlation value. A system control unit (11) drives a focus lens based on the defocus amount Df1.
-
公开(公告)号：US10291837B2
公开(公告)日：2019-05-14
申请号：US15260768
申请日：2016-09-09
Applicant: FUJIFILM Corporation
Inventor： Takashi Aoki , Yasuo Ohtsuki
Abstract: A digital camera includes an imaging element (5) having an imaging surface (50) where pixels (51) are arranged in two dimensions in a row direction X and in a column direction Y, an AF processing unit (19) that determines whether a focus lens is in a focused state using detection signals obtained from respective pixels (51) of a first pixel group including plural pixels (51) arranged in the row direction X and a second pixel group including pixels (51) arranged at the same distance in one direction that crosses the row direction X with respect to each of the plural pixels (51) of the first pixel group, in a state where the focus lens is at an arbitrary position, and a system control unit (11) that moves the focus lens until the AF processing unit (19) determines that the focus lens is in the focused state.
-
公开(公告)号：US09794472B2
公开(公告)日：2017-10-17
申请号：US15227186
申请日：2016-08-03
Applicant: FUJIFILM Corporation
Inventor： Takashi Aoki , Yasuo Ohtsuki
CPC classification number: H04N5/23212 , G02B7/34 , G02B7/36 , H04N5/3696 , H04N9/045 , H04N9/077
Abstract: The present invention provides an imaging device and a focusing control method capable of enhancing accuracy of a focusing control regardless of subjects even when levels of detection signals of phase difference detection pixels are low. A phase difference AF processing unit (19) generates a defocus amount (Df1) from a result of a correlation operation performed with respect to detection signals obtained by adding up detection signals of plural phase difference detection pixels (52A, 52B) in a pair line (PL1) present in a selected AF area (53) and detection signals of phase difference detection pixels (52A, 52B) in pair lines (PL2, PL3) present in a selected direction among plural directions which are crossing directions crossing an X direction with respect to each of the plural phase difference detection pixels (52A, 52B) in the pair line (PL1). A system control unit (11) performs a focusing control based on the defocus amount (Df1).
-
公开(公告)号：US10742868B2
公开(公告)日：2020-08-11
申请号：US16356887
申请日：2019-03-18
Applicant: FUJIFILM Corporation
Inventor： Takashi Aoki , Yasuo Ohtsuki
Abstract: A digital camera includes an imaging element having an imaging surface where pixels are arranged in two dimensions in a row direction X and in a column direction Y, an AF processing unit that determines whether a focus lens is in a focused state using detection signals obtained from respective pixels of a first pixel group including plural pixels arranged in the row direction X and a second pixel group including pixels arranged at the same distance in one direction that crosses the row direction X with respect to each of the plural pixels of the first pixel group, in a state where the focus lens is at an arbitrary position, and a system control unit that moves the focus lens until the AF processing unit determines that the focus lens is in the focused state.
-
公开(公告)号：US09829676B2
公开(公告)日：2017-11-28
申请号：US15214714
申请日：2016-07-20
Applicant: FUJIFILM Corporation
Inventor： Kazuki Inoue , Yasuo Ohtsuki
CPC classification number: G02B7/285 , G02B7/34 , G02B7/365 , H04N5/23212 , H04N5/3696 , H04N5/378 , H04N9/045 , H04N2209/043
Abstract: The present invention provides an imaging device and a focusing control method capable of performing reliability determination of a phase difference AF at high speed. A phase difference AF processing unit (19) performs a correlation operation with respect to detection signal groups in first pairs P1, and performs a correlation operation with respect to detection signal groups in second pairs P2. A system control unit (11) compares a difference between a first correlation amount M1 which is a minimum correlation amount between the detection signal groups in the first pairs P1, among obtained results of the correlation operation with respect to the first pairs P1 and a second correlation amount M2 which is a minimum correlation amount between the detection signal groups in the second pairs P2, among obtained results of the correlation operation with respect to the second pairs P2 with a threshold value TH, to thereby determine a reliability of a focusing control based on the phase difference AF method.
-
-
-
-
-
Search Results
6
records
(took 0.013 seconds)
