KR101457414B1 - Apparatus and method for processing digital image suppressing generation leakage of light - Google Patents

Abstract

The present invention relates to a digital image processing apparatus and method, and more particularly, to a digital image processing apparatus and method which are capable of moving a lens or a solid-state image pickup element to a position opposite to the intended direction, And more particularly, to a digital image processing apparatus and method for suppressing the occurrence of leakage of light, which enables a photographer to take an intended image. In the digital image processing apparatus for suppressing the occurrence of light leakage, when data having a predetermined pattern exists at a specific position of a live view image input in real time through an actuator and lenses that control movement of lenses, lenses, And a digital signal processing means for determining that strong light is not input and confirming the position where the data exists, and then moving the actuator in the opposite direction.

Pattern detection area, data having a certain pattern, actuator movement

Description

TECHNICAL FIELD [0001] The present invention relates to a digital image processing apparatus and a digital image processing apparatus,

The present invention relates to a digital image processing apparatus and method, and more particularly, to a digital image processing apparatus and method which are capable of moving a lens or a solid-state image pickup element to a position opposite to the intended direction, And more particularly, to a digital image processing apparatus and method for suppressing the occurrence of leakage of light, which enables a photographer to take an intended image.

In the conventional digital image processing apparatus, when unintentional intense light enters into one side of the lens barrel as shown in FIG. 1, a light leakage phenomenon occurs and a light And then photographed. This causes inconvenience in the user's viewpoint, and sometimes causes an unstable operation at the time of image capturing, thereby occasionally capturing an undesired image.

SUMMARY OF THE INVENTION It is a technical object of the present invention to provide a digital image processing apparatus and a digital image processing apparatus, And to provide a digital image processing apparatus and method for suppressing the occurrence of leakage of light so as to allow photographing.

According to an aspect of the present invention, there is provided a digital image processing apparatus for suppressing leakage of light, comprising: lenses; An actuator for controlling movement of one of the lenses; And if there is data having a predetermined pattern at a specific position of a live view image input through the lenses in real time, it is determined that intense strong light is input, and the position of the data is confirmed, To the digital signal processing means.

In the present invention, the digital signal processing means includes a buffer for inputting and outputting data of a live view image input through the lenses in real time; A comparator for comparing reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position stored in the buffer; And a control unit for determining that intense strong light is input when the comparison result data is similar and moving the actuator in the opposite direction after confirming the position where the data exists.

According to a second embodiment of the present invention, there is provided a digital image processing apparatus for suppressing light leakage, comprising: a solid-state image sensor; An actuator for controlling movement of the solid-state imaging device; And when there is data having a predetermined pattern at a specific position of the live view image formed in real time in the solid state image pickup device, it is determined that intentional strong light is input, and the position of the data is confirmed, To the digital signal processing means.

In the present invention, the digital signal processing means may include a buffer for inputting and outputting data of a live view image input in real time through the solid state image pickup device; A comparator for comparing reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position stored in the buffer; And a control unit for determining that intense strong light is input when the comparison result data is similar and moving the actuator in the opposite direction after confirming the position where the data exists.

According to a first aspect of the present invention, there is provided a digital image processing method for suppressing the occurrence of light leakage, the method comprising: (a) inputting a first shutter release button, Determining whether data having a predetermined pattern exists at a specific position; (b) moving the actuator, which controls the movement of the lens, in the opposite direction after determining that the intentional strong light is input when the data having the predetermined pattern exists, and checking the position where the data exists; And (c) if there is no data having the predetermined pattern, capturing an image by inputting a second shutter-release button.

In the present invention, the step (a) may include: (a-1) receiving data of a live view image input through the lenses in real time; (a-2) comparing reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position received in real time; And (a-3) determining that intense strong light has been input when the comparison result data is similar.

According to a second aspect of the present invention, there is provided a digital image processing method for suppressing the occurrence of light leakage, comprising: (a) inputting a first shutter release button to a live view image Determining whether there is data having a predetermined pattern at a specific position of the data; (b) if there is data having the predetermined pattern, moving the actuator for controlling the movement of the solid-state image sensor in the opposite direction after determining that the light leakage is generated and checking the position where the data exists; And (c) if there is no data having the predetermined pattern, capturing an image by inputting a second shutter-release button.

In the present invention, the step (a) may include: (a-1) receiving data of a live view image formed in real time in the solid-state image sensing device; (a-2) comparing reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position received in real time; And (a-3) determining that light leakage has occurred if the comparison result data is similar.

As described above, according to the present invention, when unintended light enters the digital image processing apparatus, the lens or the solid-state image pickup element is moved to the opposite position to prevent the intentional light from being input, .

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

FIG. 2 is a block diagram showing a configuration of a digital image processing apparatus for suppressing the occurrence of leakage of light according to the first embodiment of the present invention. The lens 21, a charge coupled device (CCD) ) 23, an actuator 25, and a digital signal processing section 27. In the present invention, the lenses 21 and the actuator 25 are provided in the lens barrel portion of the digital image processing device, and the solid-state image pickup device 23 and the digital signal processing portion 27 are provided in the main body of the digital image processing device .

In FIG. 2, the lenses 21 receive light from an external light source and process images.

The CCD 23 accumulates the amount of light input through the lenses 21 and outputs an image captured by the lenses 21 according to the accumulated light amount in accordance with the vertical synchronization signal. Image acquisition by the digital image processing apparatus is performed by a CCD 23 that converts light reflected from a subject into an electrical signal.

The actuator 25 moves any one of the lenses 21 up and down and operates under the control of the digital signal processor 27.

When there is data having a predetermined pattern at a specific position of a live view image input in real time through the lenses 21, the digital signal processing unit 27 determines that intentional strong light is input, And then moves the actuator 25 in the opposite direction.

To this end, the digital signal processor 27 includes a buffer 27-1, a comparator 27-2, and a controller 27-3.

The buffer 27-1 inputs and outputs data of a live view image input through the lenses 21 and the CCD 23 in real time.

The comparator 27-2 compares reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position stored in the buffer 27-1.

A memory (not shown) is provided in the digital signal processor 27, and reference data having a predetermined pattern is stored in a specific position in the memory. In one embodiment, the memory of the digital signal processing section 27 stores a certain pattern detection area in which intense strong light, i.e., internal reflection or light leakage frequently occurs, as shown in FIG. 4A, Reference data having a pattern is stored.

Therefore, the comparing unit 27-2 compares the data having a certain pattern as a reference in the reference pattern detecting area stored in the memory with the data having a predetermined pattern inputted in real time in the pattern detecting area stored in the buffer 27-1 And outputs the result to the control unit 27-3.

As a result of the comparison by the comparator 27-2, data having a certain pattern as a reference in the reference pattern detection area stored in the memory and data having a predetermined pattern input in real time in the pattern detection area stored in the buffer 27-1 In a similar case, the control unit 27-3 determines that intense strong light is input, moves the actuator 25 in the opposite direction after confirming a position where data having a predetermined pattern exists.

The actuator 25 moves any one of the lenses so that intense light which is not intended by the control unit 27-3 is not focused on the CCD 23.

FIG. 2A shows a live view image as shown in FIG. 4A displayed by intentional strong light input, FIG. 2B shows a state in which a strong unintentional strong light The live view image positioned at a position outside the area of the CCD 23 is displayed.

Thus, after the correction operation is performed through the movement of the actuator 25 with respect to intentional strong light input, the image is captured.

FIG. 3 is a block diagram showing the configuration of a digital image processing apparatus for suppressing the generation of light leakage according to the second embodiment of the present invention. The lens 31, the charge coupled device (CCD) ) 33, an actuator 35, and a digital signal processing unit 37. In the present invention, the lenses 31 are provided in the lens barrel portion of the digital image processing apparatus, and the solid-state image pickup device 33, the actuator 35 and the digital signal processing portion 37 are provided in the main body of the digital image processing apparatus .

In FIG. 3, the lenses 31 receive light from an external light source and process the image.

The CCD 33 accumulates the amount of light input through the lenses 31 and outputs an image captured by the lenses 31 according to the accumulated light amount, in accordance with the vertical synchronization signal. Image acquisition of the digital image processing apparatus is performed by a CCD 33 that converts light reflected from a subject into an electrical signal.

The actuator 35 moves the CCD 33 up and down and operates under the control of the digital signal processor 37. [

When there is data having a predetermined pattern at a specific position of the live view image formed on the CCD 33, the digital signal processing unit 37 determines that intense strong light is input, And then moves the actuator 35 in the opposite direction.

To this end, the digital signal processor 37 includes a buffer 37-1, a comparator 37-2, and a controller 37-3.

The buffer 37-1 inputs and outputs data of the live view image input through the lenses 31 and the CCD 33 in real time.

The comparator 37-2 compares reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position stored in the buffer 37-1.

A memory (not shown) is provided in the digital signal processor 37, and reference data having a predetermined pattern is stored in a specific position in the memory. In one embodiment, the memory of the digital signal processing unit 37 stores a certain pattern detection area in which intense strong light, i.e., internal reflection or light leakage frequently occurs, as shown in FIG. 4A, Reference data having a pattern is stored.

Therefore, the comparison unit 37-2 compares the data having the predetermined pattern as the reference in the reference pattern detection area stored in the memory with the data having the predetermined pattern inputted in real time in the pattern detection area stored in the buffer 37-1 And outputs the result to the control unit 37-3.

As a result of the comparison by the comparator 37-2, the data having the predetermined pattern serving as the reference in the reference pattern detecting area stored in the memory and the data having the predetermined pattern inputted in real time in the pattern detecting area stored in the buffer 37-1 In a similar case, the controller 37-3 determines that intense strong light is input, moves the actuator 35 in the opposite direction after confirming the position where data with a certain pattern exists.

The actuator 35 moves the CCD 33 so that intense light which is not intended by the control unit 37-3 is not focused on the CCD 33. [

4A is displayed. However, when the actuator 35 moves the CCD 33, a strong light which is not intended by the CCD 35 is emitted from the CCD 23 The live view image is displayed.

Thus, after the correction operation is performed through the movement of the actuator 35 with respect to intentional strong light input, the image is captured.

Hereinafter, a digital image processing method for suppressing leakage of light according to the present invention will be described in detail with reference to FIG. The digital image processing method for suppressing the generation of light leakage according to the present invention can be performed in the digital image processing apparatus as shown in FIGS. 2 and 3. According to the embodiment, And can be performed in the digital signal processing units 27 and 37 with the help of the digital signal processors 27 and 37.

When the live view image is displayed (501), the digital signal processing units (27, 37) wait for the input of the first shutter-release button (step 503). The shutter-release button generates the first and second image pickup signals by the photographer input. When the first shutter-release button as the half-shutter signal is input, the digital image processing apparatus focuses and adjusts the amount of light, and the green light is turned on when the focus is achieved. When the focus of the first shutter-release button is focused and the amount of light is adjusted, a second shutter-release button as a full shutter signal is input to capture an image.

When the first shutter-release button is input, the digital signal processing units 27 and 37 perform auto exposure, auto focus, and auto white balance adjustment on the live view image (Step 505).

When the adjustment operation is completed, the digital signal processing units 27 and 37 compares the reference pattern data of the pattern detection area stored in the internal memory with the pattern data of the same pattern detection area inputted in a buffer (not shown) in real time (Step 507).

A memory (not shown) is provided in the digital signal processing units 27 and 37, and reference data having a predetermined pattern at a specific position is stored in the memory. In one embodiment, the memory of the digital signal processing unit 37 stores a certain pattern detection area in which intense strong light, i.e., internal reflection or light leakage frequently occurs, as shown in FIG. 4A, Reference data having a pattern is stored. Accordingly, the digital signal processing units 27 and 37 compare data having a predetermined pattern as a reference in the reference pattern detection region stored in the memory and data having a predetermined pattern inputted in real time in the pattern detection region stored in the buffer.

As a result of comparison, when data having a predetermined pattern as a reference in the reference pattern detection area stored in the memory and data having a predetermined pattern inputted in real time in the pattern detection area stored in the buffer are different, the digital signal processing parts 27, (Step 511), and the photographed image is stored (step 513).

However, if the data having a predetermined pattern as a reference in the reference pattern detection area stored in the memory and the data having a predetermined pattern inputted in real time in the pattern detection area stored in the buffer are similar, the digital signal processing units 27 and 37 It is determined that intentional strong light is input and the position where the data having a predetermined pattern exists is checked in step 515 and the actuators 25 and 35 are moved in the opposite direction in step 517. The actuators 25 and 35 move either one of the lenses 21 or the CCD 33 so that intense light which is not intended by the digital signal processing units 27 and 37 can not be focused on the CCD 33. [ Here, the actuator can be operated either on one of the lenses or on the CCD or on one of the lenses and the CCD.

FIG. 2A shows a live view image as shown in FIG. 4A displayed by intentional strong light input, FIG. 2B shows a state in which a strong unintentional strong light The live view image positioned at a position outside the area of the CCD 23 is displayed.

4A. However, since the actuator 35 moves the CCD 33 to prevent intense strong light from being condensed on the CCD 33, the live view image shown in FIG. 4B The live view image is displayed.

Thereafter, the digital signal processing units 27 and 37 compare the pattern data of the same pattern detection area input with the reference pattern data of the pattern detection area stored in the internal memory in real time and input to the buffer (not shown) And 517 are repeated. If not, the second shutter release button input is received, and the image is captured and stored.

In another embodiment, a variable positive prism (VAP, not shown) can be moved to suppress unintended strong light.

1 is a view showing generation of leakage light in a conventional digital image processing apparatus.

2 is a block diagram showing a configuration of a digital image processing apparatus for suppressing the generation of light leakage according to the first embodiment of the present invention.

3 is a block diagram showing the configuration of a digital image processing apparatus for suppressing the generation of light leakage according to the second embodiment of the present invention.

Fig. 4 is a view showing an embodiment of the leakage light generation and the leakage light correction after the light leakage correction according to Fig.

5 is a flowchart illustrating an operation of a digital image processing method for suppressing the generation of leakage of light according to the present invention.

Claims (8)

Lenses; An actuator for controlling movement of one of the lenses; And When there is data having a predetermined pattern at a specific position of the live view image input through the lenses in real time, it is determined that intense strong light is input, and the position of the data is confirmed, Wherein the digital signal processing means includes a digital signal processing means for moving the digital image signal. The digital signal processing apparatus according to claim 1, wherein the digital signal processing means A buffer for inputting and outputting data of a live view image input in real time through the lenses; A comparison unit for comparing reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position as the specific position stored in the buffer; And And a control unit for moving the actuator after confirming a position where the data is present indicating that intense strong light is input when the comparison result data is similar. A solid state image pickup device; An actuator for controlling movement of the solid-state imaging device; And When there is data having a predetermined pattern at a specific position of a live view image formed in real time in the solid state image pickup device, it is determined that a strong intense light is input, A digital image processing apparatus comprising signal processing means for suppressing leakage of light. The digital signal processing apparatus according to claim 3, wherein the digital signal processing means A buffer for inputting and outputting data of a live view image input in real time through the solid state image pickup device; A comparison unit for comparing reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position as the specific position stored in the buffer; And And a control unit for moving the actuator after confirming a position where the data is present indicating that intense strong light is input when the comparison result data is similar. (a) determining whether data having a predetermined pattern exists at a specific position of a live view image input through a lens in real time as an input of a first shutter release button; (b) moving the actuator for controlling the movement of the lens after determining that the intentional strong light is input when the data having the predetermined pattern exists, and checking the position where the data exists; And (c) capturing an image by inputting a second shutter-release button when there is no data having the predetermined pattern. 6. The method of claim 5, wherein step (a) (a-1) receiving data of a live view image input through the lenses in real time; (a-2) comparing reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position as the specific position received in real time; And (a-3) judging that strong intense light is input when the comparison result data are similar, comprising the steps of: (a) determining whether there is data having a predetermined pattern at a specific position of a live view image formed in real time in a solid-state image sensing device by an input of a first shutter release button; (b) moving the actuator for controlling the movement of the solid-state image sensing device after determining that the light leakage is generated when the data having the predetermined pattern exists and confirming the position where the data exists; And (c) capturing an image by inputting a second shutter-release button when there is no data having the predetermined pattern. 9. The method of claim 8, wherein step (a) (a-1) receiving data of a live view image formed in real time in the solid-state image sensing device; (a-2) comparing reference data having a predetermined pattern at a specific position with data having a predetermined pattern at the same position as the specific position received in real time; And (a-3) judging that light leakage has occurred when the comparison result data are similar.

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