KR101187786B1 - Apparatus and method for display hand tremor - Google Patents

Abstract

The present invention relates to a digital image processing apparatus and method, and more particularly, to a hand shake display apparatus and method for detecting and displaying a shake state of a photographer in real time during image capturing. The present invention is a device equipped with a hand shake correction device, a hand shake detection unit for detecting a hand shake by the input of the image pickup signal and outputs an output signal corresponding to the amount of the hand shake and compares the detected hand shake signal with a preset reference value And a controller configured to continuously update data in real time to the display device during the input of the photographing signal and to process the hand shake state as a displayable signal. According to the present invention, since the current state of the hand shake and how to cope with it are displayed together, the photographer can shoot more safely without fear of hand shake, thereby creating an effect of further increasing the reliability of the image capturing apparatus. do.

Description

Apparatus and method for display hand tremor}

1 is a block diagram showing the configuration of a hand shake display device according to the present invention.

2A to 2C are diagrams illustrating a subject and a vibration frequency displayed on a display unit of the apparatus of FIG. 1.

3 is a diagram illustrating the shaking frequency by region.

4 is a flowchart showing the operation of the hand shake display method according to the present invention.

The present invention relates to a digital image processing apparatus and method, and more particularly, to a hand shake display apparatus and method for detecting and displaying a shake state of a photographer in real time during image capturing.

The image captured by the photographer holding the digital image processing apparatus by hand generates small shaking, that is, hand shaking. In recent years, since cameras are becoming more magnified and pixelated, camera shake becomes more severe than ever before, and as more cameras are taken on the move, the solution of the camera shake problem has become an important factor in obtaining clean images.

Therefore, a general digital image processing apparatus includes a hand shake correction system to correct such hand shake. The image stabilization system displays a hand shake image as a clean image such as an image free of hand shake by performing a correction operation on the photographing lens or image sensor by the amount of hand shake. In addition, the image stabilization system includes a function to detect a camera shake and warn the photographer. When hand shake occurs, the hand shake correction system lights up or flashes the LED (not shown) for a certain time to display a hand shake warning, or displays a hand shake warning as various letters or symbols on the LCD (not shown). have.

However, all of the above hand shake warning signs only warn against the occurrence of hand shake, and it is impossible to confirm how much hand shake occurs by the photographer, and any change in the hand shake phenomenon after a predetermined time has elapsed. It is not possible to check whether it is stable (or more severely trembling), and what to do when hand shake is occurring, and you have anxiety while shooting.

The technical problem to be achieved by the present invention is to display the camera shake state of the photographer in real time at the time of video shooting to enable the photographer to check, and to present a stable response by presenting a method for dealing with the detected shake To provide a hand shake display device and method.

The hand shake display device for solving the technical problem to be achieved by the present invention is a device equipped with a hand shake correction device, which detects hand shake by input of a photographing signal and outputs an output signal corresponding to the hand shake amount. Hand shake detection unit; And a controller configured to compare the detected shaking signal with a preset reference value to continuously update data in real time on a display device in real time during input of a photographing signal and to process the signal as a displayable signal.

In the present invention, the hand shake detection unit includes a sensor unit for detecting a hand shake state at a predetermined time interval; A filter unit controlling noise of the hand shake signal output from the sensor unit; An amplifier for amplifying the hand shake signal passing through the filter unit; And a converting unit converting the amplified hand shake signal into a digital signal.

In the present invention, the control unit divides the hand shake state as the comparison result into a hand shake stable region, a hand shake anxiety region, and a hand shake correction impossible region, and processes the region information and the hand shake signal to be displayed together. It is done.

In the present invention, the controller is configured to induce a second image capture signal input when the hand shake state exists in the stable region.

In the present invention, when the hand shake state is present in the anxiety region, the control unit induces another shooting posture or generates a command for correcting hand shake of an image captured by the second image pick-up signal input. It features.

In the present invention, the control unit may induce the use of a tripod when the hand shake state is a hand shake correction impossible region located in an area other than the stable area and the unstable area.

In the present invention, the control unit is configured to induce zoom-out when the image in the zoom-in state is the image stabilization impossible region.

The image stabilization display method for solving the technical problem to be achieved by the present invention is a method of operating a device equipped with a hand shake correction device, (a) when a photographing signal is input, hand shake by operation of the hand shake detection sensor Outputting a signal; (b) comparing the detected hand shake signal with a preset reference value; And (c) updating the current shaking state in real time on the display device in real time irrespective of the input signal of the photographing signal from the comparison result and processing the signal to a displayable signal.

In the present invention, the step (b) may include (b-1) determining the image capturing state as a hand shake stable region when the hand shake signal is within a first reference value; (b-2) determining the image capturing state as a hand shake anxiety area when the hand shake signal is within a second reference value; And (b-3) determining that the image capturing state is an image stabilization impossible area when the shake signal exists outside the first and second reference values.

In the present invention, when it is determined that the image stabilization area is stable, the second image capture signal input is induced.

In the present invention, when it is determined that the hand shake anxiety region is determined, a different shooting posture is induced or a hand shake of the image captured by the second image pick-up signal is corrected.

In the present invention, when it is determined that the camera shake correction impossible region, it is characterized in that the use of a tripod.

In the present invention, when it is determined that the zoom-in image is the image stabilization impossible region, zoom-out is induced.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a block diagram illustrating a configuration of a hand shake display device according to an exemplary embodiment of the present invention, including a shutter input unit 100, a hand shake detection unit 110, a display unit 120, a hand shake correction unit 130, and a position control unit 140. ), And a control unit 150. In the present invention, the hand shake detection unit 110 includes a sensor unit 111, a filter unit 113, an amplifier unit 115, and an ADC 117.

The shutter input unit 100 is provided outside the digital image processing apparatus and means a shutter release button input for image capturing. The image capturing signal input through the shutter input unit 100 is input to the controller 150, and the controller 150 performs a predetermined process for capturing an image.

The shutter input unit 100 generates first and second image capture signals by a photographer input. The first image pick-up signal refers to a half shutter signal and the second image pick-up signal refers to a full shutter signal. When the first image photographing signal is input as the half shutter signal, the digital image processing apparatus focuses and adjusts the amount of light. When the focus is achieved, the green light is turned on in the display unit 120.

When the focus is achieved by the input of the first image capture signal and the amount of light is adjusted, the image is captured by inputting the second image capture signal as a complete shutter signal.

When the first image capture signal is generated through the shutter input unit 100, the hand shake detection unit 110 detects and outputs the hand shake. The hand shake detection unit 110 includes a sensor unit 111, a filter unit 113, an amplifier unit 115, and an ADC 117.

The sensor unit 111 detects the shaking state at predetermined time intervals under the control of the controller 150. For example, the sensor unit 111 may detect the shaking state by operating ten times per second. The sensor unit 111 may use, for example, an angular velocity sensor (not shown), an acceleration sensor (not shown), a gyro sensor (not shown), or the like, to find out the movement of an object.

The sensor unit 111 causes the vibrator connected to the driving electrode (not shown) to be bent in a predetermined direction (for example, up, down, left, and right) by the voltage input under the control of the controller 150. . In this state, when an object in contact with the sensor unit 111 moves in a certain direction (when an angular velocity occurs), a Coriolis force is generated in a direction perpendicular thereto to excite new vibrations. This vibration is generally referred to as detection vibration, and since the magnitude of the detection vibration is proportional to the angular velocity, the angular velocity detection can be performed by converting it to the output of the detection vibration.

The filter unit 113 is configured as a low pass filter to remove noise from the detection signal of the hand shake output from the sensor unit 111. The amplifier 115 amplifies the filtered shake detection signal. The ADC 117 converts the amplified hand shake detection signal into a digital signal.

The controller 150 compares the hand shake detection signal converted into a digital signal with a reference value and processes the current hand shake state and a corresponding method as a displayable signal and outputs the same to the display unit 120.

As illustrated in FIG. 2, the display 120 displays an image screen 121 to be photographed, a hand shake state, and a corresponding screen 123. FIG. 2A illustrates an example in which a video screen 121 to be photographed, a hand shake state, and a corresponding method screen 123 are divided into screens. FIG. 2B illustrates a video screen 121 to be photographed as a main screen. 2C shows an image screen 121 to be photographed as a sub screen, a shaking state, and a corresponding action screen 123 as a main screen. The example shown is shown.

The video screen 121 to be photographed, the hand shake state, and a corresponding action screen 123 shown in FIG. 2 are displayed and processed by the controller 150 at the photographer's selection.

As shown in FIG. 2, the controller 150 performs the following operations to display the shaking state and a corresponding method screen 123.

The controller 150 compares the hand shake detection signal converted into a digital signal with the first and second reference values and divides the comparison result into a hand shake stable region, a hand shake anxiety region, and a hand shake correction impossible region. Processes the hand shake signal to be displayed together.

Here, the first reference value is 3-10 Hz, which is a stabilization stable frequency. This is set from this, because the current human is not artificial and natural frequency of hand shake is within 2Hz or 3Hz to 10Hz. The second reference value is 10 Hz to 15 Hz, which is a camera shake correctable frequency. And, according to the intention of the designer it is possible to change the camera shake correction possible frequency. This is set from the image stabilization frequency that can be corrected in the digital image processing apparatus.

As a result of the comparison of the controller 150, when the hand shake detection signal generated repeatedly for a predetermined time as shown in FIG. 3A exists within the first reference value, the controller 150 determines that the current hand shake state is a stable area. In addition, the current shaking state frequency and area information are displayed on the display unit 120, and as a coping method, a message for inducing a second image capture signal input is displayed on the display unit 120.

As a result of the comparison of the control unit 150, when the hand shake detection signal repeatedly generated for a predetermined time as shown in FIG. 3B exists within the second reference value, the control unit 150 determines that the current hand shake state is an unstable area. In addition, the current shaking state frequency and area information are displayed on the display 120, and as a coping method, a message for inducing another shooting posture and a second image capture signal input is displayed on the display 120.

When the second image pick-up signal is input in the hand shake anxiety region, the controller 150 controls the hand shake corrector 130 and the position controller 140 to correct and store the hand shake of the picked-up image signal. The hand shake correction unit 130 uses a voice coil motor and a piezoelectric motor, and a driving mechanism is operated to compensate for hand shake. As mentioned above, the mechanism for compensating for hand shake includes moving a lens (not shown) by the amount of hand shake and moving an image sensor (CCD, COMS, etc.) by the amount of hand shake. The position controller 140 checks whether the operation of the hand shake correction unit 130 is normal, feeds it back to the controller 150, and the controller 150 receives the feedback signal to determine whether the correction is completed.

As a result of the comparison of the controller 150, when the hand shake detection signal repeatedly generated for a predetermined time does not exist within the first and second reference values, as shown in FIG. 3C, the controller 150 handles the current hand shake state. It is determined that the image cannot be shake corrected, the current state of the shaking state and the region information are displayed on the display 120, and a message for inducing the use of a tripod is displayed on the display 120 as a countermeasure.

Although not shown in the drawing, when the hand shake detection signal does not exist within the first and second reference values in the zoom-in state of the image, the controller 150 determines the current hand shake state as an area for image stabilization that is not possible. The current shaking state frequency and area information are displayed on the display unit 120, and a message for inducing zoom-out is displayed on the display unit 120 as a countermeasure. Since the hand shake generated in the zoom-in state is reduced when the camera is switched to the zoom-out state, the user checks the zoom-out induction message displayed on the display unit 120 and zooms out the image currently in the zoom-in state. Switch to the state.

As described above, when the first image photographing signal is input, the hand shake signal detected in real time for a predetermined time is compared with a reference value, and thus the hand shake state area information and a corresponding method are displayed together, so that the photographer is not afraid of hand shake. You can shoot more safely.

4 is a flowchart showing the operation of the hand shake display method according to the present invention.

In order to capture the digital image, the photographer inputs the first image capture signal as a half shutter signal (step 401).

The control unit 150 receiving the first image capture signal operates the hand shake detection unit 110 and receives the hand shake signal received from the hand shake detection unit 110 (step 403).

The controller 150 compares the detected shaking signal with the first and second reference values, and displays the image to be photographed, the shaking state, and a corresponding method, as shown in FIG. 2, on the display 150. (Step 405).

As a result of the comparison of the control unit 150, when it is determined that the camera shake is stable (step 407), a message indicating that the camera shake is stable is output (step 409), and a shooting guidance message to the current state is output (step 411). .

Thereafter, when the second image photographing signal is input from the photographer (step 413), the controller 150 stores the photographed image in a memory (not shown) (step 415).

As a result of the comparison of the control unit 150, if it is determined that the hand shake anxiety area (step 417), a message indicating the hand shake anxiety area is output (step 419), and it is determined whether to photograph in the hand shake anxiety area (step 421). ).

When photographing is performed in the hand shake anxiety region, the controller 150 receives the second image photographing signal (step 423), controls the hand shake correction unit 130 to correct the hand shake of the captured image and stores the image in the memory. Save (step 425).

If the image is not taken in the hand shake anxiety region, the controller outputs another shooting attitude guidance message (step 427), and the photographer releases the first image shooting signal input, and restarts from step 401 after changing the shooting position. .

As a result of the comparison of the control unit 150, if it is determined that the camera shake correction impossible area (step 429), a message indicating that the camera shake correction impossible area is output (step 431), and a tripod recommendation message is output (step 433). The photographer terminates the input of the first image capturing signal, fixes the digital image processing apparatus on a tripod, and starts again from step 401.

Although not shown in the drawing, when the hand shake detection signal does not exist within the first and second reference values in the zoom-in state of the image, the controller 150 determines the current hand shake state as an area for image stabilization that is not possible. The current shaking state frequency and area information are displayed on the display unit 120, and a message for inducing zoom-out is displayed on the display unit 120 as a countermeasure. Since the hand shake generated in the zoom-in state is reduced when the camera is switched to the zoom-out state, the user checks the zoom-out induction message displayed on the display unit 120 and zooms out the image currently in the zoom-in state. Switch to the state.

So far I looked at the center of the preferred embodiment for the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

As described above, according to the present invention, when the image is taken, the camera shake state of the photographer is displayed in real time so that the photographer can check whether the current shooting position is stable.

In addition, since the current state of the hand shake and how to cope with it are displayed together, the photographer can shoot more safely without fear of hand shake, thereby creating an effect of further increasing the reliability of the image capturing apparatus.

Claims (13)

As a device equipped with a camera shake correction device, A hand shake detection unit for detecting a hand shake by inputting a photographing signal and outputting an output signal corresponding to the amount of the hand shake; And A hand shake display device comprising: a controller for comparing a detected hand shake signal with a preset reference value to continuously update data on a display device in real time during input of a photographing signal and to process the data into a displayable signal; , The control unit The hand shake display device comprising: classifying a hand shake state as a result of the comparison into a hand shake stable region, a hand shake anxiety region, and a hand shake correction impossible region, and processing to display the area information and the hand shake signal together. According to claim 1, wherein the hand shake detection unit A sensor unit detecting a hand shake state at predetermined time intervals; A filter unit controlling noise of the hand shake signal output from the sensor unit; An amplifier for amplifying the hand shake signal passing through the filter unit; And And a converter configured to convert the amplified hand shake signal into a digital signal. delete The method of claim 1, wherein the control unit And a second image capture signal is input when the hand shake state is present in the stable region. The method of claim 1, wherein the control unit And when the hand shake state exists in the anxiety region, inducing a different shooting posture or generating a command for correcting hand shake of an image captured by a second image pick-up signal input. The method of claim 1, wherein the control unit And when the hand shake state is a hand shake correction impossible region located in a region other than the stable region and the unstable region, using a tripod. The method of claim 1, wherein the control unit And a zoom-out is induced when the image in the zoom-in state is the image stabilization impossible region. As a method of operating a device equipped with a camera shake correction device, (a) when the photographing signal is input, outputting a hand shake signal by operating the hand shake detection sensor; (b) comparing the detected hand shake signal with a preset reference value; And (c) a hand shake display method comprising the step of updating a data in real time to a display device in real time irrespective of an input signal of a photographing signal for a predetermined time from the comparison result and processing the signal to a displayable signal; , Step (b) is (b-1) determining an image capturing state as a hand shake stable region when the hand shake signal is within a first reference value; (b-2) determining the image capturing state as a hand shake anxiety area when the hand shake signal is within a second reference value; And (b-3) when the hand shake signal exists outside the first and second reference values, determining the image capturing state as an area for image stabilization. delete 9. The method of claim 8, And a second image capture signal input is induced when it is determined that the image stabilizes in the image stabilization region. 9. The method of claim 8, The hand shake display method according to claim 1, wherein when the image is determined as the hand shake anxiety region, a different shooting posture is induced or a hand shake of the image captured by the second image pick-up signal is corrected. 9. The method of claim 8, And when the image is determined to be incapable of correcting hand shake, using a tripod. 9. The method of claim 8, When the image in the zoom-in state is determined to be the image stabilization impossible region, the camera shake display method comprising inducing a zoom-out.

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