JP4886492B2 - Imaging apparatus and imaging system - Google Patents

Description

  The present invention relates to a camera shake correction function for correcting camera shake at the time of shooting in an imaging apparatus such as a video camera and an imaging system.

  In recent years, video cameras have become smaller and lighter, and optical zooms have been increased in magnification. However, such a small and light video camera easily causes camera shake at the time of shooting, and the effect of camera shake increases as the zoom magnification increases. In view of this, an image pickup apparatus equipped with a camera shake prevention function has been proposed as a function for preventing image disturbance due to camera shake during shooting.

  This camera shake prevention function is a function for preventing image distortion due to camera shake, and methods for realizing this function include an optical camera shake correction method and an electronic camera shake correction method.

  In the optical image stabilization method, a prism or lens member capable of optical axis displacement is arranged in the middle of the optical path of the imaged light incident on the image sensor, and the image stabilization is performed by displacing the optical axis according to the camera shake. .

  In the electronic camera shake correction method, correction is performed by electronically selecting a range to be recorded or output from an image obtained by an image sensor. In addition, the electronic image stabilization method uses a method in which a captured image is stored in a memory and a part thereof is cut out, or an image sensor having a larger number of pixels than a standard size image sensor required in a broadcast method. And a standard size required for the broadcasting system.

  The electronic method in which correction is performed by controlling the read start position from the memory or the image sensor is more advantageous for miniaturization than the optical method in which separate components are required for the optical axis displacement. Therefore, when priority is given to downsizing, it is common to use an electronic image stabilization method.

  In addition, an imaging apparatus using a CMOS image sensor having a low voltage and low power consumption as an imaging element as compared with a CCD image sensor has been proposed.

  In general, a CCD image sensor and a CMOS image sensor have a large difference in structure from a method of reading signals from pixels arranged on an imaging surface, and a charge accumulation control method is different. FIG. 7 is a diagram showing a charge accumulation control system. The difference in the accumulation control method will be described with reference to FIG.

  FIG. 7A shows a CCD image sensor accumulation control method called a global shutter, in which accumulation of all pixel rows is started at the same timing, read out to the CCD after the accumulation period Δt, and signals are sequentially transmitted. Is output. FIG. 7B shows a CMOS image sensor accumulation control method called a rolling shutter, and the accumulation start timing is shifted for each pixel row. From the basic operation method of the CMOS image sensor, a pixel that outputs a signal starts to accumulate electric charges from that point. Therefore, as shown by the broken-line arrow in FIG. 7B, the accumulation must be completed in accordance with the signal output timing. In addition, in order to read out the charge in the accumulation period Δt, it is necessary to reset the charge by performing reset reading from the pixel at a time before Δt from the read timing. For this reason, if the readout timing of the pixel row is Δ and the reset timing is ▲, it must be controlled as shown in the figure.

  Next, control of the reading start position from the sensor will be described.

  FIG. 8 is a diagram illustrating timing of reading from the sensor. FIG. 8A shows an operation for controlling the reading start position from the CCD image sensor. In the case of a CCD image sensor, since all the pixel rows are accumulated simultaneously, the start row for outputting a signal with respect to the vertical reference signal is swept at a high speed, and reading is started from a desired pixel row. FIG. 8B shows an operation for controlling the reading start position from the CMOS image sensor. In the case of a CMOS image sensor, the charge must be reset at a time before the accumulation period Δt after the pixel row to be output for the vertical reference signal is determined. For this reason, the timing for resetting the charge in each pixel row varies depending on the reading start position. In addition, since the reading start position is determined before charge accumulation is started, there is a problem that camera shake generated during the accumulation period remains in the sensor output. As described above, since the charge accumulation control method is different between the CCD image sensor and the CMOS image sensor, it is necessary to perform camera shake correction corresponding to the characteristics in the CMOS image sensor.

Therefore, Patent Document 1 discloses a method of correcting camera shake by controlling a reading start position from a CMOS image sensor based on camera shake information. Patent Document 1 discloses a method of correcting camera shake by temporarily recording all effective pixels of a CMOS image sensor and controlling a reading start position from a storage unit based on camera shake information.
JP 2000-350101 A

  However, as in the above-described technique, the camera shake correction unit that controls the reading start position from the CMOS image sensor does not solve the problem that camera shake that occurs during the accumulation period remains in the sensor output.

  In addition, as in the technique described above, the method of storing all pixels can correct camera shake during the accumulation period, but speeds up the readout clock compared to reading out the required number of pixels from the CMOS image sensor. There is a need to. As a result, there is a problem that power consumption increases.

  The present invention has been made in view of the above problems, and an object thereof is to effectively correct camera shake at high speed and with low power consumption.

A first aspect of the present invention relates to an imaging apparatus, and includes an imaging unit that reads an image signal from a part of a plurality of pixels arranged on an imaging surface, a camera shake detection unit that detects camera shake, and is detected by the camera shake detection unit. A first control unit for determining a reading start position of the imaging unit based on the first amount of camera shake, and a storage unit for storing the image signal read from the imaging unit; And determining the readout start position of the image signal stored in the storage means based on the second shake amount detected by the shake detection means after determining the readout start position of the imaging means, A second control means for controlling reading;
It is characterized by providing.

  A second aspect of the present invention relates to an imaging system, and includes an optical system and the imaging device described above.

  According to a third aspect of the present invention, there is provided a method for controlling an image pickup apparatus including an image pickup unit that reads an image signal from a part of a plurality of pixels arranged on an image pickup surface, and a camera shake detection unit that detects camera shake. Based on the first amount of camera shake detected by the detection means, a step of determining the readout start position of the imaging means and controlling the readout, and storing the image signal read from the imaging means in the storage means And a reading start position of the image signal stored in the storage means based on a second camera shake amount detected by the camera shake detection means after determining a reading start position of the imaging means. And a step of controlling the reading.

  According to a fourth aspect of the present invention, there is provided an imaging system control method including an optical system, an imaging unit that reads an image signal from a part of a plurality of pixels arranged on an imaging plane, and a camera shake detection unit that detects camera shake. In accordance with the first camera shake amount detected by the camera shake detection means, the step of determining the readout start position of the imaging means and controlling the readout, and the image signal read from the imaging means And storing the image signal stored in the storage unit based on a second amount of camera shake detected by the camera shake detection unit after determining the reading start position of the imaging unit Determining the position and controlling the reading thereof.

  According to the present invention, camera shake can be effectively corrected at high speed and with low power consumption.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is a diagram showing a configuration of an imaging apparatus according to a preferred first embodiment of the present invention. In FIG. 1, a CMOS image sensor 101 functions as an imaging unit that photoelectrically converts an incident subject image and outputs as an image signal from some of a plurality of pixels arranged on the imaging surface. The AFE 102 removes noise from the output signal of the CMOS image sensor 101 and performs A / D conversion. The memory 103 records the image signal digitized by the AFE 102. The CPU 104 controls the entire imaging apparatus. For example, the CPU 104 calculates the accumulation time of the CMOS image sensor 101 in accordance with the setting at the time of shooting, and calculates the first camera shake correction control unit 106, the second camera shake correction control unit 108, and the sensor drive control unit 107. The accumulated storage time is output. The gyro sensor 105 functions as a camera shake detection unit that detects the amount of camera shake at regular intervals. The first control unit 110 determines the reading start position of the CMOS image sensor 101 based on the amount of camera shake detected by the gyro sensor 105 and controls the reading. The second control unit 111 determines the read start position of the image signal stored in the storage unit such as the memory 103 based on the amount of camera shake detected by the gyro sensor 105 after determining the read start position of the CMOS image sensor 101. Determine and control its reading. The first control unit 110 includes a first camera shake correction control unit 106 that calculates a reading start position of the CMOS image sensor 101 and a sensor drive control unit 107 that controls driving of the CMOS image sensor 101. The second control unit 111 outputs a video output (readout) from the second camera shake correction control unit 108 that calculates the reading start position of the storage unit such as the memory 103 and the pixels recorded in the storage unit such as the memory 103. Memory read control means 109 for controlling the range to be used.

  The operation of the imaging apparatus according to the preferred first embodiment of the present invention will be described below with reference to FIG.

  FIG. 2 is a diagram illustrating a timing chart for explaining the operation of the imaging apparatus according to the present embodiment. In FIG. 2, the horizontal axis indicates the time axis. 2 (g) to 2 (i), the vertical axis indicates the pixel position in the row direction. 2 (h) and 2 (i) show the pixel area of the output signal in a section represented by a reference number described later.

  The pulse shown in FIG. 2A indicates a vertical reference signal, and the signal interval may vary depending on the setting at the time of shooting. A number given between each vertical reference signal indicates a reference number. FIG. 2B shows the output from the gyro sensor 105 and represents the amount of camera shake detected at regular intervals. FIG. 2C shows an integrated value between reference signals obtained by integrating the amount of camera shake generated between the vertical reference signals. The direction of camera shake is indicated by arrows ↑ ↓, and the size of camera shake is indicated by a number beside the arrow. Arrows ↑ and ↓ indicate two directions parallel to and opposite to the imaging surface of the CMOS image sensor 101, respectively. FIG. 2D shows the total integrated value obtained by integrating the amount of camera shake generated up to the time when each vertical reference signal is generated, and is represented by arrows ↑ ↓ as in the case of the integrated value between reference signals. FIG. 2E shows a first camera shake correction value for determining the read start position of the CMOS image sensor 101, and FIG. 2F shows a second camera shake correction value for determining the read start position of the memory 103. is there. FIG. 2G shows a pixel region of the CMOS image sensor 101, where all pixels of the CMOS image sensor 101 are represented by broken lines and pixels read from the CMOS image sensor 101 are represented by solid lines. 2H shows an output signal (output image) from the CMOS image sensor 101, and FIG. 2I shows an output signal (output image) from the memory 103. In FIG. 2I, all pixels stored in the CMOS memory 103 are indicated by broken lines, and pixels read out from the memory 103 and output are indicated by solid lines.

  Hereinafter, the first embodiment will be described with reference to FIGS. 1 and 2.

  In FIG. 2, as an example, the number of rows of all pixels of the CMOS image sensor 101 is 100 rows, the number of rows of pixels read from the CMOS image sensor 101 is 80 rows, and the readout start row when there is no camera shake is the 11th row. .

  First, camera shake correction in the reference number 1 section will be described. The gyro output indicates upward, and upward camera shake occurs with respect to the imaging surface. An integrated value between reference signals obtained by integrating the amount of camera shake generated in the reference number 1 section is ↑ 10. In the interval of the reference number 1, this value is directly used as the first camera shake correction value and the second camera shake correction value.

  The readout positions of the CMOS image sensor 101 are the 11th to 90th rows among the 1st to 100th rows of the imaging surface (“G1” shown in FIG. 2). The camera shake occurring in the reference number 1 section is the read start line of the CMOS image sensor 101 in the reference number 2 section, and the read start line of the image stored in the memory 103 read from the CMOS image sensor 101 in the reference number 1 section. , Respectively.

  That is, the read start line in the reference number 2 section is the first line in which the 11th line, which is the read start line in the reference number 1 section, is moved up by 10 lines. The output signal (“H1” shown in FIG. 2) read from the CMOS image sensor 101 is stored in the memory 103, and then a part of the output signal is read out as video output (“I1” shown in FIG. 2). Output. When there is no camera shake in the reference number 1 section, among the images stored in the memory 103, the 11th to 90th lines corresponding to the readout area (“G1” shown in FIG. 2) of the CMOS image sensor 101. Read the line. However, in the interval of reference number 1, since the shaking of the inter-reference signal integration value ↑ 10 occurs, the reading start row from the memory 103 is the first row in which the eleventh row is moved up by ten rows. Thus, camera shake occurring in the reference number 1 section is reflected.

  This will be described in more detail with an example of camera shake correction in the interval of the reference number 2.

  First, the first camera shake correction control unit 106 integrates the amount of camera shake up to time point (2), and outputs the obtained integrated value to the sensor drive control unit 107 as a first camera shake correction value. In FIG. 2, in order to simplify the explanation, the black square is set to the vertical reference signal generation time (between the reference numbers 1 and 2) closest to the read start time □. Note that (2) may be set at least the total time of the accumulation time Δt and the time for calculating the read start position from the read start time □ from the CMOS image sensor 101.

  Next, since the first camera shake correction value is ↑ 10, the CPU 104 moves the reading start line of the CMOS image sensor 101 up to the 10th line from the 11th line and changes it to the 1st line. As a result, the reading start time □ is determined.

  Next, the CPU 104 calculates the accumulation time Δt of the CMOS image sensor 101 in accordance with the setting at the time of shooting, and the first camera shake correction control means 106, the second camera shake correction control means 108, and the sensor drive control means 107 are calculated. The calculated accumulation time Δt is output. Thereby, the readout pixel region G2 in the reference number 2 is determined.

  Next, the sensor drive control means 107 sequentially starts from the first row to the 80th row, which is the readout start row of the readout pixel region G2, at the time before the accumulation time Δt from the readout start time □ of the CMOS image sensor 101. Reset the charge.

  Next, the CMOS image sensor 101 sequentially reads out the charges accumulated from the first row to the 80th row at the read start time □, and outputs them to the AFE 102.

  Here, in the sensor output H2 from the readout pixel region G2, the camera shake up to the time of ■ is corrected, but the camera shake occurring between ■ and □ is not corrected. This is because once the reading start position is set, the position cannot be changed. Therefore, camera shake occurring after the read start position is set is corrected on the memory 103 side.

  First, the AFE 102 digitizes the sensor output H 2 and records it in the memory 103.

  Next, the second camera shake correction control unit 108 integrates the amount of camera shake generated between (1) and (2), and outputs the obtained integrated value to the memory read control unit 109 as a second camera shake correction value.

  Here, as shown in FIG. 2 (i) as an example, the memory 103 can store 80 rows of pixels, the number of rows of pixels read from the memory 103 is 60, and the readout start row when there is no camera shake. Is the 11th row.

  (2) Since the amount of camera shake occurring between − □ is the integrated value between reference signals ↓ 10 at the time of □, the second camera shake correction value is ↓ 10, and the reading start line from the memory 103 is 10 lines below. It becomes the 21st line which moved to.

  The memory read control means 109 performs reading from the memory 103 from the 21st line to the 80th line, which is the read start line. As a result, a memory output I2 is obtained in which camera shake occurring between ■ and □ is corrected.

  As described above, in the present embodiment, camera shake occurring before the determination of the read start position (for example, before the accumulation period) is corrected by controlling the read start position from the CMOS image sensor. Then, by controlling the read start position from the memory, camera shake occurring after the read start position is determined (for example, during the accumulation period) is corrected. As a result, the readout clock can be made slower than in the case of reading out all pixels, and the power consumption can be suppressed.

[Second Embodiment]
Next, a preferred second embodiment of the present invention will be described. In the present embodiment, when a camera shake exceeding a size that can be corrected by the control of the read start position from the CMOS image sensor 101 occurs, the read start position from the memory is considered in consideration of the camera shake amount that cannot be corrected. The camera shake correction is performed by controlling.

  FIG. 3 is a diagram showing a configuration of an imaging apparatus according to the preferred second embodiment of the present invention, and FIG. 4 is a diagram showing a timing chart for explaining the operation of the second embodiment. 3 and 4, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals. FIG. 4J shows a difference value between a reading start position for correcting camera shake and a position where reading is actually started from the CMOS image sensor 101.

  Hereinafter, a different part from 1st Embodiment is demonstrated.

  The first camera shake correction control means 106 integrates the amount of camera shake up to the time of ■, and when the obtained integrated value is within a correctable range, the integrated value is used as the first camera shake correction value to drive the sensor. Output to the control means 107. When the obtained integrated value exceeds the correctable range, the maximum correctable value is output to the sensor drive control means 107 as the first camera shake correction value. Further, the difference value between the integrated value and the first camera shake correction value is output to the second camera shake correction control means 108.

  The second camera shake correction control unit 108 adds the integrated value obtained by integrating the amount of camera shake occurring between the squares-and the difference value from the first camera shake correction control unit 106 to obtain the second camera shake. The correction value is output to the memory read control means 109.

  In FIG. 4, the number of rows of all pixels of the CMOS image sensor 101 is 100 rows, the number of rows of readout pixels from the CMOS image sensor 101 is 80 rows, the readout start row when there is no camera shake is the 11th row, and the camera shake correction range. Are 10 lines up and down. Since the total integrated value in FIG. 4D is ↑ 15 at the time of (3), it exceeds 10 lines of the camera shake correction range. For this reason, as the first camera shake correction value, the maximum value ↑ 10 capable of camera shake correction is output to the sensor drive control means 107. Also, a difference value ↑ 5 between the total integrated value ↑ 15 and the maximum value ↑ 10 that can be corrected is output to the second image stabilization control means 108.

  The sensor drive control means 107 resets the charge sequentially from the read start row to the read pixel region G3 determined by the first camera shake correction value at the time before the accumulation time Δt from the read start time □ from the CMOS image sensor 101. To do. Next, the accumulated electric charges are read out in order from the read start time □ from the CMOS image sensor 101 and output from the CMOS image sensor 101.

  The sensor output H3 includes camera shake that could not be corrected by controlling reading from the CMOS image sensor 101 and camera shake that occurred during the accumulation period.

  The second camera shake correction control unit 108 adds the integrated value of the amount of camera shake occurring between ■ and □ and the difference value from the first camera shake correction control unit 106, and reads out the memory as a second camera shake correction value. Output to the control means 109.

  At the time of □, the amount of camera shake occurring between ■ and □ is zero in the integrated value between reference signals in FIG. 4C, while the difference value from the first camera shake correction control means 106 is ↑ 5. is there. For this reason, the second camera shake correction value is represented by ↑ 5, and the reading start row from the memory 103 moves up five rows to become the sixth row (“I2” shown in FIG. 4).

  The memory read control unit 109 controls reading from the memory 103 in accordance with the read start position. As a result, it is possible to obtain a memory output I3 in which camera shake remaining at the time of reading from the CMOS image sensor 101 and camera shake generated between {circle around (1)}-□ are corrected.

  As described above, in this embodiment, camera shake exceeding the correctable range occurs, and the camera shake remaining at the time of reading from the CMOS image sensor can be corrected at the time of reading from the memory.

[Third Embodiment]
Next, a preferred third embodiment of the present invention will be described. In this embodiment, when the readout start row of the CMOS image sensor 101 is limited to a predetermined row and readout cannot be performed from a row for correcting camera shake, the amount of camera shake that cannot be corrected is taken into consideration. Then, camera shake correction is performed by controlling the reading start position from the memory.

  FIG. 5 is a diagram showing a configuration of an imaging apparatus according to the preferred third embodiment of the present invention, and FIG. 6 is a timing chart for explaining the operation of the third embodiment. In FIG. 5 and FIG. 6, the same code | symbol is attached | subjected to the component similar to FIG.1 and FIG.2.

  Hereinafter, a different part from 1st Embodiment is demonstrated.

  The sensor drive control unit 107 can set a camera shake correction row based on the first camera shake correction value as a readout start position in the vicinity (for example, nearest) of the camera shake correction row when the camera shake correction row cannot be set as the readout start position. Read from the correct row. At the same time, the difference value between the line number of the camera shake correction line and the line number of the actually read line is output to the second camera shake correction control means 108. The second camera shake correction control means 108 adds the integrated value obtained by integrating the amount of camera shake generated between ■ and □ and the difference value from the sensor drive control means 107 to obtain a second camera shake correction value. Output to the memory read control means 109.

  In FIG. 6, the number of rows of all pixels of the CMOS image sensor 101 is 100, the number of rows of pixels read from the CMOS image sensor 101 is 80, and the readout start row when there is no camera shake is the 11th row. In addition, the number of rows that can be read from the CMOS image sensor 101 is every five rows. Since the total integrated value in FIG. 6D is ↑ 8 at the time of (2), the readout starting line for correcting camera shake is the third line. However, since the third row is not a row that can be set as the reading start position, reading is performed from the first row that is a row that can be set as the closest reading start position. Also, the difference value ↓ 2 between the row number of the readout row for performing camera shake correction and the row number of the row from which reading has actually started is output to the second camera shake correction control means 108.

  In the sensor output H3, camera shake that could not be corrected by reading from the CMOS image sensor 101 and camera shake that occurred during the accumulation period remain.

  The second camera shake correction control unit 108 adds the integrated value of the amount of camera shake generated between ■ and □ and the difference value from the sensor drive control unit 107 to obtain a memory read control unit 109 as a second camera shake correction value. Output to.

  At the time of □, the amount of camera shake occurring between ■ and □ becomes the inter-reference signal integrated value ↓ 5 in FIG. 6C, but the difference value from the sensor drive control means is ↓ 2. The camera shake correction value is ↓ 7. As a result, the reading start line from the memory 103 moves down seven lines to become the eighteenth line (“I3” shown in FIG. 6).

  The memory read control unit 109 controls reading from the memory 103 in accordance with the read start position. As a result, it is possible to obtain a memory output I3 in which camera shake remaining at the time of reading from the CMOS image sensor 101 and camera shake generated between {circle around (1)}-□ are corrected.

  As described above, in this embodiment, in the CMOS image sensor 101 in which the reading start position can be set only for a predetermined row, the camera shake remaining at the time of reading from the CMOS image sensor 101 is controlled. This makes it possible to correct camera shake.

  In the description of the above-described embodiment, the memory for storing the image signal read from the CMOS image sensor is arranged in the imaging device. For example, when such a memory is arranged outside the imaging device, The present invention is applicable.

  In the above description of the embodiment, the optical system including the imaging lens is not shown, but the present invention is also applicable to an imaging system such as a video camera equipped with such an optical system. .

It is a figure which shows the structure of the imaging device which concerns on suitable 1st Embodiment of this invention. It is a figure which shows the timing chart for demonstrating operation | movement of the imaging device which concerns on the suitable 1st Embodiment of this invention. It is a figure which shows the structure of the imaging device which concerns on suitable 2nd Embodiment of this invention. It is a figure which shows the timing chart for demonstrating operation | movement of the imaging device which concerns on suitable 2nd Embodiment of this invention. It is a figure which shows the structure of the imaging device which concerns on the suitable 3rd Embodiment of this invention. It is a figure which shows the timing chart for demonstrating operation | movement of the imaging device which concerns on the suitable 3rd Embodiment of this invention. It is a figure explaining the accumulation | storage control system of the charge of the image pick-up element in a prior art. It is a figure explaining the read-out timing from a CMOS image sensor in the prior art.

Explanation of symbols

101 ... CMOS image sensor 103 ... Memory 105 ... Gyro sensor 110 ... First control means 111 ... Second control means

Claims (7)

Imaging means for reading out image signals from some of the plurality of pixels arranged on the imaging surface;
Camera shake detecting means for detecting camera shake;
A first control unit that determines a reading start position of the imaging unit based on a first amount of camera shake detected by the camera shake detection unit, and controls the reading;
Storage means for storing an image signal read from the imaging means;
Based on the second camera shake amount detected by the camera shake detection unit after determining the readout start position of the imaging unit, the readout start position of the image signal stored in the storage unit is determined, and the readout is performed. Second control means for controlling;
An imaging apparatus comprising: The first control unit calculates a first camera shake correction value by integrating the first camera shake amount detected until the reading start position of the imaging unit is determined. Having means,
It said second control means, by integrating the second shake amount detected after determining the reading start position of the imaging means, the second camera shake correction control means for calculating a second camera shake correction values Have
The first camera shake correction control means determines a reading start position of the imaging means based on the first camera shake correction value;
The imaging apparatus according to claim 1, wherein the second camera shake correction control unit determines a reading start position of the storage unit based on the second camera shake correction value. When the first camera shake correction value exceeds a set value, the first camera shake correction control unit sets the set value as the first camera shake correction value, and also sets the first camera shake correction value and the first camera shake correction value. A difference value with a set value is output to the second image stabilization control means;
The second camera shake correction control means is based on the integrated value and the difference value of the second camera shake amount detected from when the reading start position of the imaging means is determined until the end of the charge accumulation period. The imaging apparatus according to claim 2, wherein the second camera shake correction value is calculated. The first control unit controls the readout start position of the imaging unit in units of rows, and when the readout start position determined based on the first camera shake amount is not a readable row, the vicinity thereof Read out from the readable row, and output the difference value between the row number of the determined read start position and the row number actually started reading to the second camera shake correction control means,
The second camera shake correction control means is based on the integrated value and the difference value of the second camera shake amount detected from when the reading start position of the imaging means is determined until the end of the charge accumulation period. The imaging apparatus according to claim 2, wherein the second camera shake correction value is calculated. Optical system,
An imaging apparatus according to any one of claims 1 to 4,
An imaging system comprising: An imaging apparatus control method comprising: an imaging unit that reads an image signal from a part of a plurality of pixels arranged on an imaging surface; and a camera shake detection unit that detects camera shake,
Determining a reading start position of the imaging unit based on a first amount of camera shake detected by the camera shake detecting unit, and controlling the reading;
Storing an image signal read from the imaging unit in a storage unit;
Based on the second camera shake amount detected by the camera shake detection unit after determining the readout start position of the imaging unit, the readout start position of the image signal stored in the storage unit is determined, and the readout is performed. A controlling step;
A method for controlling an imaging apparatus, comprising: An imaging system control method comprising: an optical system; an imaging unit that reads an image signal from a part of a plurality of pixels arranged on an imaging surface; and a camera shake detection unit that detects camera shake,
Determining a reading start position of the imaging unit based on a first amount of camera shake detected by the camera shake detecting unit, and controlling the reading;
Storing an image signal read from the imaging unit in a storage unit;
Based on the second camera shake amount detected by the camera shake detection unit after determining the readout start position of the imaging unit, the readout start position of the image signal stored in the storage unit is determined, and the readout is performed. A controlling step;
An imaging system control method comprising:

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