KR20100001267A - Apparatus and method for processing zooming shot in digital image processing device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital image processing apparatus and a method, and to a digital image processing apparatus capable of performing a zooming shot capturing method that can be performed only in a digital single lens reflex (DSLR) digital image processing apparatus. In a zoom shot processing apparatus and method. In the digital image processor, the zooming shot processing apparatus includes digital signal processing means for performing interpolation so that pixels other than the area face the area about an arbitrary area set in the captured image.

Description

Apparatus and method for processing zooming shot in digital image processing device}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital image processing apparatus and a method, and to a digital image processing apparatus capable of performing a zooming shot capturing method that can be performed only in a digital single lens reflex (DSLR) digital image processing apparatus. In a zoom shot processing apparatus and method.

The DSLR digital image processing device uses a zoom lens to change the focal length during exposure with a slow shutter so that the size of the subject changes within the screen, so that the image spreads from the center to the periphery of the screen. Equipped with.

In order to perform the zooming function in the DSLR digital image processing device, the zooming should be controlled by rotating the zoom ring of the lens by hand, and the zooming ring is taken at the moment of capturing the exposure time longer than 0.5 seconds. Doing.

Such zooming shots cannot be taken in compact digital image processing devices that cannot be replaced because the zooming must be adjusted by hand turning the zoom ring by hand.To shoot zooming shots, shoot with a longer shutter speed. Since the zoom ring is rotated, there is a big problem that a hand shake occurs.

The technical problem to be solved by the present invention is a zoom shot processing apparatus in a digital image processor that performs the zooming shot photographing method that is possible only in a DSLR digital image processing apparatus in a compact digital image processing apparatus, and reduces the occurrence of hand shake when shooting a zooming shot; To provide a method.

In the digital image processor for solving the technical problem to be solved by the present invention, the zooming shot processing apparatus performs digital signal processing for performing interpolation so that pixels other than the area face the area around an arbitrary area set in the captured image. It is preferred to include means.

In the present invention, the digital signal processing means comprises: an area setting unit for setting an arbitrary area in the captured image; And an interpolation unit configured to calculate pixels other than the set area together with neighboring pixels and perform interpolation toward the set area.

In the present invention, when performing the interpolation, the intensity of the zooming shot may be adjusted according to the moving distance of the pixels.

A zooming shot processing method in a digital image processor for solving the technical problem to be achieved by the present invention may include: setting an arbitrary region on the captured image; And interpolating the pixel other than the set area with the surrounding pixels to face the set area.

In the present invention, when performing the interpolation, the intensity of the zooming shot may be adjusted according to the moving distance of the pixels.

As described above, according to the present invention, the compacting digital image processing apparatus can perform the zooming shot capturing method that can be performed only in the DSLR digital image processing apparatus, thereby improving user satisfaction and reducing the occurrence of camera shake when zooming shots. The desired image can be obtained.

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

1 is a perspective view showing the front and top appearance of a digital image processor.

The shutter release button 11 is opened and closed to expose the CCD or film to light for a predetermined time, and records the image on the CCD by properly exposing the subject in conjunction with an aperture (not shown).

The shutter release button 11 generates the first and second image capturing signals by a photographer input. When the first shutter release button 11 as the half-shutter signal is input, the digital image processor focuses and adjusts the amount of light, and when the focus is achieved, the green light is turned on in the display unit 23. When focus is achieved by the input of the first shutter release button 11 and the amount of light is adjusted, the second shutter release button 11 as a full shutter signal is input to capture an image.

The power button 13 is input to supply power to the digital image processor for operation.

The flash 15 brightens the bright light instantly when shooting in a dark place. Flash modes include auto flash, forced flash, flash off, red-eye reduction, and slow synchro.

The auxiliary light 17 supplies light to the subject so that the digital image processor automatically focuses quickly and accurately when the amount of light is insufficient or at night.

The lens unit 19 receives light from an external light source and processes an image.

FIG. 2 is a rear view illustrating a rear shape of the digital image processor illustrated in FIG. 1, and includes a wide-angle zoom button 21w, a telephoto-zoom button 21t, a display unit 23, and a touch sensor or a contact switch. Input buttons B1 to B14 (hereinafter referred to as buttons B1 to B14).

The wide-angle zoom button 21w or the tele-zoom button 21t increases the angle of view or narrows the angle of view depending on the input, particularly when the size of the selected exposure area is to be changed. When the wide-zoom button 21w is input, the size of the selected exposure area is reduced, and when the tele-zoom button 21t is input, the size of the selected exposure area is increased.

The buttons B1 to B14 are provided in the horizontal column and the vertical column of the display unit 23. The buttons B1 to B14 provided in the horizontal and vertical columns of the display unit 23 are provided with a touch sensor (not shown) or a contact switch (not shown).

That is, the buttons B1 to B14 are provided with a touch sensor to move up / down / left / right in a state where the buttons B1 to B7 in the horizontal row or the buttons B8 to B14 in the vertical row are touched. You can select any value (eg, color or brightness) from the items, or activate the submenu icons included in the main menu icon.

In addition, the buttons B1 to B14 are provided with contact switches so that the corresponding function can be executed by directly selecting the main menu icon and the submenu icon. The touch sensor requires only a weak touch relative to the contact switch input, but the contact switch input requires a relatively strong touch compared to the touch sensor input.

3 is a block diagram showing the configuration of the zooming shot processing apparatus in the digital image processor according to the present invention. The display unit 23, the user input unit 31, the imaging unit 33, the image processing unit 35, and the storage unit ( 37) and a digital signal processor 39.

The user input unit 31 may include a shutter release button 11 that opens and closes to expose the CCD or film to light for a predetermined time, a power button 13 that inputs to supply power, and widens an angle of view according to the input. Wide-Zoom button 21w and Tele-Zoom button 21t for narrowing the angle of view, and a touch sensor or contact switch provided in horizontal and vertical columns around the display unit 23 for text input or menu selection and execution. There are buttons B1 to B14 provided.

The imaging unit 33 includes a shutter, a lens unit, an aperture, a charge coupled device (CCD), and an ADC, which are not shown in the figure. The shutter is a mechanism for adjusting the amount of light exposed together with the aperture. The lens unit receives light from an external light source and processes an image. At this time, the iris adjusts the amount of light incident (light quantity) according to the degree of opening and closing. The opening and closing degree of the iris is controlled by the digital signal processing unit 39.

The CCD accumulates the amount of light input through the lens unit and outputs an image captured by the lens unit in accordance with the accumulated light amount in accordance with the vertical synchronization signal. Image acquisition by the digital image processor is performed by a CCD that converts light reflected from a subject into an electrical signal. In order to obtain a color image using a CCD, a color filter is required, and most of them employ a filter (not shown) called a color filter array (CFA). CFA has a structure arranged regularly by passing only one color light per pixel, and has various shapes according to the arrangement structure. The ADC converts an analog video signal output from the CCD into a digital signal.

The image processor 35 performs signal processing to display the digitally converted RAW data. The image processor 35 removes the black level caused by the dark current generated by the CCD and the CFA filter that are sensitive to the temperature change. The image processor 35 performs gamma correction to encode information according to nonlinearity of human vision. The image processor 35 performs CFA interpolation to interpolate the Bayer pattern implemented by the RGRG line and the GBGB line of the gamma corrected predetermined data into the RGB line. The image processing unit 35 converts the interpolated RGB signal into a YUV signal and filters the Y signal by a high band filter to clearly process the image, and uses the standard color coordinate system to adjust the color values of the U and V signals. Perform color correction to correct and remove their noise. The image processor 35 generates a JPEG file by compressing and signal-processing Y, U, and V signals from which noise is removed, and the generated JPEG file is displayed on the display unit 23 and stored in the storage unit 37. do. All of the operations of the image processor 35 operate under the control of the digital signal processor 39.

The digital signal processor 39 performs zooming processing to perform interpolation so that pixels other than the set area are directed toward the set area around an arbitrary area set in the captured image.

To this end, the digital signal processor 39 includes an area setting unit 39-1, an interpolation unit 39-2, and a controller 39-3.

The controller 39-4 receives the digital data converted from the imaging unit 33 to read pixel information.

The area setting unit 39-1 sets an arbitrary area in the image photographed through the user input unit 31. Referring to FIG. 4, the area 401 illustrated in FIG. 4 becomes an area set by the area setting unit 39-1 through the user input unit 31.

The interpolation unit 39-2 calculates pixels other than the set area 401 together with the surrounding pixels and performs interpolation to face the set area 401.

A pixel of an image sensor such as a CCD has an intensity value of one of R (Red), G (Green), and B (Blue), and has a structure of reproducing the original color of the pixel through an interpolation process. Interpolation reproduces color information of a pixel having information of one color using information of surrounding pixels having information of a different color. In an image with little change, color can be reproduced using information of surrounding pixels.

4 shows an example of zooming shot processing. Referring to FIG. 4, an example of zooming shot processing in which an effect that a portion around the set area 401 is directed toward the set area 401 by interpolating pixels other than the set area around the set area 401 is shown. Is shown.

During the zooming shot processing, the controller 39-3 may adjust the intensity of the zooming shot by controlling the interpolation according to the moving distance of the pixels from the set area 401.

When the interpolation is completed, the controller 39-3 transmits it to the image processor 35, and the image processor 35 performs JPEG compression to store the image in the storage unit 37 or display it on the display unit 23. .

Hereinafter, the zooming shot processing method in the digital image processor according to the present invention will be described in detail with reference to FIG. 6. The zooming shot processing method in the digital image processor according to the present invention may be performed inside the digital image processor as shown in FIG. 3. It may be performed in the digital signal processor 39.

When the digital image processor selects the zooming shot mode through the user input unit 31, the digital signal processor 39 enters the digital image processor into the zooming shot mode (step 501).

Thereafter, an image is captured 503, and the digital signal processing unit 39 converts the analog image signal output from the CCD into digital RAW data and reads pixel information of the digital RAW data.

Subsequently, the digital signal processor 39 sets an arbitrary area in the image photographed through the user input unit 31, calculates pixels other than the set area 401 together with the surrounding pixels, and faces the set area 401. Interpolation is performed to perform the operation (step 505).

Referring to FIG. 4, the area 401 illustrated in FIG. 4 becomes an area set by the digital signal processor 39 through the user input unit 31.

A pixel of an image sensor such as a CCD has an intensity value of one of R (Red), G (Green), and B (Blue), and has a structure of reproducing the original color of the pixel through an interpolation process. Interpolation reproduces color information of a pixel having information of one color using information of surrounding pixels having information of a different color. In an image with little change, color can be reproduced using information of surrounding pixels.

Referring to FIG. 4, an example of zooming shot processing in which an effect that a portion around the set area 401 is directed toward the set area 401 by interpolating pixels other than the set area around the set area 401 is shown. Is shown.

During the zooming shot processing, the digital signal processor 39 may adjust the intensity of the zooming shot by controlling the interpolation according to the moving distance of the pixels from the set area 401.

When the interpolation is completed, the digital signal processor 39 transmits it to the image processor 35, and the image processor 35 performs JPEG compression to store the image in the storage unit 37 or display it on the display unit 23. (Step 507).

1 is a perspective view showing the front and top appearance of a digital image processor.

FIG. 2 is a rear view illustrating a rear shape of the digital image processor illustrated in FIG. 1.

3 is a block diagram showing the configuration of the zooming shot processing apparatus in the digital image processor according to the present invention.

4 is a diagram illustrating an example of zooming shot processing implemented in the apparatus of FIG. 3.

5 is a flowchart illustrating the operation of the zooming shot processing method in the digital image processor according to the present invention.

Claims (5)

As a digital image processor, And a digital signal processing means for interpolating pixels outside the area toward the area about an area set in the captured image. The method of claim 1, wherein the digital signal processing means An area setting unit for setting an arbitrary area in the captured image; And And an interpolation unit configured to calculate pixels other than the set area together with neighboring pixels to interpolate the set area toward the set area. The method of claim 2, wherein when performing the interpolation: Zooming shot processing apparatus characterized in that for adjusting the intensity of the zooming shot according to the moving distance of the pixels. As an operation method of the digital image processor, Setting an arbitrary area in the captured image; And And calculating the pixels other than the set area together with surrounding pixels to perform interpolation to face the set area. The method of claim 4, wherein when performing the interpolation: Zooming shot processing method characterized in that for adjusting the intensity of the zooming shot according to the moving distance of the pixels.

Images