KR101214154B1 - Digital image processing device zooming an image - Google Patents

Abstract

A digital image processing apparatus capable of magnifying and reproducing an image of the present invention includes a photographing unit which photographs an image; A storage unit for storing the captured image; A first zoom controller configured to set an adjustment interval of the reproduction magnification; A second zoom controller which varies the magnification at an adjustment interval of the reproduction magnification set by the first zoom controller; An image processing unit converting the photographed image into data in a storage format and outputting the converted image to a storage unit, selecting an image to be enlarged among the stored images, and performing an enlargement process according to a magnification set by the second zoom controller; And a display unit for displaying the magnified image.

According to the digital image processing apparatus of the present invention, the magnification adjustment interval can be varied by the first zoom control button, and the magnification can be adjusted by the second zoom control button. As a result, the user can quickly check the required portion of the desired captured image at a desired magnification.

Description

Digital image processing device zooming an image}

1 is a view for explaining a conventional image magnification reproduction method executed in a digital camera.

2 is a block diagram illustrating a configuration of a digital camera as an example of a digital image processing apparatus to which the concept of the present invention may be applied.

3 is a diagram illustrating an example of a front surface of a digital camera as shown in FIG. 1 as an example of a digital image processing apparatus to which the present invention may be applied.

4 is a diagram illustrating an example of a rear surface of a digital camera as shown in FIG. 1 as an example of a digital image processing apparatus to which the present invention may be applied.

FIG. 5 is a block diagram of a digital image processing apparatus according to a preferred embodiment of the present invention.

FIG. 6 is a flowchart for explaining an example of a method of adjusting an enlarged reproduction magnification in the digital image processing apparatus of FIG. 5.

The present invention relates to a digital image processing apparatus such as a digital camera, and more particularly to a digital image processing apparatus capable of zoom reproduction of an image.

1 is a view for explaining a conventional image magnification reproduction method executed in a digital camera. In the image playback mode, when the user inputs the magnification button 107, the image is enlarged and reproduced by a predetermined ratio (× 2.2) based on the center point of the currently reproduced image screen 113, and when the direction button 109 is input, the magnification window ( The cursor in 130 moves so that another part of the original image is enlarged and reproduced. The user may enlarge the desired portion at a desired magnification by using the zoom button 107 and the direction button 109.

The magnification of the image is enlarged by one step each time the magnification button 107 is pressed once. When the original image size is small, the number of magnification steps is small, and the larger the original image size, the number of magnification steps is increased.

As the size of the captured image is larger, more magnification steps are set, and since the image is always enlarged only at a constant scaling interval, it is inconvenient to enter the magnification button several times in order to check the required portion at the desired high magnification. There is this.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a digital image processing apparatus capable of varying a magnification adjustment interval during enlarged reproduction of a digital image.

Digital image processing apparatus for expanding and reproducing the image of the present invention for achieving the above technical problem, the photographing unit for photographing the image; A storage unit for storing the captured image; A first zoom controller configured to set an adjustment interval of the reproduction magnification; A second zoom controller which varies the magnification at an adjustment interval of the reproduction magnification set by the first zoom controller; An image processing unit for converting a photographed image into data in a storage format and outputting the converted image to the storage unit, selecting an image to be enlarged among the stored images, and performing an enlargement process according to a magnification set by the second zoom controller; And a display unit which displays the magnified image.

Preferably, the default value of the adjustment interval of the reproduction magnification is set according to the size of the selected image.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote components that perform the same function.

2 is a block diagram illustrating a configuration of a digital camera as an example of a digital image processing apparatus to which the concept of the present invention may be applied.

The optical system OPS including the lens unit and the filter unit optically processes light from a subject. The lens unit in the optical system OPS includes a zoom lens, a focus lens, and a compensation lens.

A photoelectric converter (OEC) of a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) converts light from an optical system (OPS) into an electrical analog signal. Here, the DSP 7 controls the timing circuit 2 to control the operations of the photoelectric converter OEC and the analog-digital converter 1. The CDS-ADC (Correlation Double Sampler and Analog-to-Digital Converter) element 1 as an analog-to-digital converter processes the analog signal from the photoelectric converter (OEC), removes the high frequency noise, and adjusts the amplitude. (auto gain control, AGC) and then convert to a digital signal. The DSP 7 processes the digital signal from the CDS-ADC element 1 to generate a digital image signal classified into luminance and chroma signals.

The DRAM (Dynamic Random Access Memory) 4 temporarily stores digital image signals and other temporary processing data from the DSP 7.

The EEPROM (Electrically Erasable Programmable Read Only Memory) 5 stores algorithms and setting data necessary for the operation of the DSP 7. The memory card of the user is attached to and detached from the memory card interface 6.

The digital image signal from the DSP (Digital Signal Processor) 7 is converted into the display signal of the LCD panel by the LCD driver 14 so that the image is displayed on the color LCD panel 17.

On the other hand, the digital image signal from the DSP 7 can be transmitted by serial communication via the USB (Universal Serial Bus) connection 18 or the RS232C interface 8 and its connection 19, and the video filter 9 And as a video signal through the video output unit 20.

The audio processor 13 outputs the audio signal from the microphone MIC to the DSP 7 or the speaker SP, and outputs the audio signal from the DSP 7 to the speaker SP.

The user input unit INP may include a shutter button, a mode selection button, a function selection button, a zoom button, a direction movement button, and the like. The user input unit INP is operated by the user to generate a command for performing each function according to the user's instruction.

The microcontroller 12 controls the lens driver 10, whereby the zoom motor M _Z , the focus motor M _F , and the aperture motor M _A are zoom lenses in the optical system OPS, The focus lens and the aperture are driven respectively. The light emitting unit LAMP driven by the microcontroller 12 may include a self-timer lamp, an auto-focus lamp, a flash standby lamp, and the like. On the other hand, the microcontroller 12 drives the flash 15 by controlling the operation of the flash controller 11 in accordance with the signal from the flash-light amount sensor 16.

The function of the microcontroller 12 may be implemented in one chip with the DSP 7.

The digital camera to which the present invention can be applied does not have to include all the components of FIG. 1, and those skilled in the art may delete some of the components, add another component, or modify some components according to the specification. It will be appreciated that the functionality of the various components may be implemented in combination.

3 is a diagram illustrating an example of a front surface of a digital camera as shown in FIG. 1 as an example of a digital image processing apparatus to which the present invention may be applied.

In front of the digital camera of FIG. 3, a shutter button 104, a jog dial 117, a mode dial 103, a power switch 126, a speaker 124, an AF (auto-focus) auxiliary light 125, and a microphone 123 are provided. ), A remote control receiver 122, a lens 121, a view finder 119, a flash 118, and the like.

4 is a diagram illustrating an example of a rear surface of a digital camera as shown in FIG. 1 as an example of a digital image processing apparatus to which the present invention may be applied.

4, the rear view of the digital camera, the viewfinder 100, the auto focus lamp 101, the flash status lamp 102, the mode dial 103, the shutter button 104, the LCD button 105, the wide-angle zoom button. (106), telephoto zoom button 107, 5 function button 109, DC power input terminal 110, external output terminal 111, playback mode button 112, LCD monitor 113, manual focus button ( 114), the automatic exposure lock button 115, the image quality adjustment button 116 and the like are provided.

The LCD monitor 113 displays an OSD (On Screen Display) indicating the current shooting mode and status of the digital camera.

The five-function button 109 includes a menu entry / confirmation button and up, down, left, and right buttons in the center. When the menu is displayed on the monitor, the up, down, left, and right directional buttons can function as special function buttons instead of directional movement.

The various function buttons shown in FIG. 4 may be provided to perform two or more complex functions in addition to the functions shown in the names.

FIG. 5 is a block diagram illustrating a digital image processing apparatus according to an exemplary embodiment of the present invention, wherein the first zoom controller 200, the second zoom controller 202, the photographing unit 204, and the image processor 206 are provided. ), A storage unit 208, and a display unit 210.

In the digital image processing apparatus of FIG. 5, an image photographed by the photographing unit 204 is converted into data in a storage format by the image processing unit 206 and stored in the storage unit 208.

In the digital camera of FIG. 2, the photographing unit 204 may be provided by an optical system OPS, a photoelectric conversion unit OEC, a CDS-ADC element 1, a timing circuit 2, or the like.

In the digital camera, the storage unit 208 may be provided as a memory card (6 in FIG. 1). In addition, the storage unit 208 may be provided as a flash memory embedded in a digital camera.

The image processor 206 reproduces an image stored in the storage 208. The image processor 206 outputs the image data obtained by enlarging the images read from the storage unit 208 at the magnification set by the first zoom controller 200 and the second zoom controller 202 to the display unit 210. . In the digital camera, the image processing unit 206 may be provided as a DSP (7 of FIG. 1).

The first zoom controller 200 sets an interval for adjusting the magnification.

The first zoom controller 200 may be provided as a jog dial (117 in FIG. 3) in the digital camera. In this case, the user can change and set the magnification adjustment interval immediately by adjusting the jog dial 117 during magnification reproduction.

In addition, the first zoom controller 200 may be provided as a menu button 109 of FIG. 4. In this case, the user may enter the menu by operating the menu button 109 to set the enlargement magnification adjustment interval to a desired interval in advance.

The second zoom controller 202 varies the zoom level according to the adjustment interval of the magnification by the first zoom controller 206. The second zoom controller 202 may be provided as a zoom button 106 or 107 of the digital camera.

The display unit 210 displays an image according to the magnification set by the second zoom controller 200. In the digital camera, the display unit 210 may be provided by an LCD driving unit 14 of FIG. 1 and a color LCD panel 17 of FIG. 1 and 113 of FIG. 3.

Table 1 below shows an example of an enlarged image size and a configurable enlargement step for a predetermined image size, for example, an image size of 3264x2448 pixels.

Original image size in pixels Zoom
step enlargement
Magnification Magnified image
Size in pixels 3264 × 2448 One 1.04 3136 × 2352 2 1.09 3008 × 2256 3 1.13 2880 × 2160 4 1.19 2752 × 2064 5 1.24 2624 × 1968 ·
·
· ·
·
· ·
·
· 21 5.67 576 × 432 22 7.29 448 × 336 23 10.20 320 × 240

This magnification step depends on the image size. The larger the original image size, the more magnification steps. That is, there are 23 magnification steps from 1.04 times to 10.20 times for the original image size of 3264 × 2448 in Table 1, but there are 6 magnification steps from 1.09 to 2.43 times when the original image size is 640 × 480. Can be.

FIG. 6 is a flowchart for explaining an example of a method of adjusting an enlarged reproduction magnification in the digital image processing apparatus of FIG. 5.

First, when it is determined whether to enlarge or reproduce the selected image (S100), it is determined whether the first zoom control button is input (S102).

As the first zoom control button (200 of FIG. 5) is input, the magnification adjustment interval is changed and set (S104). When the first zoom control button 200 is provided as an operation means that can be input in parallel with the second zoom control button such as a jog dial, the magnification adjustment interval can be changed immediately in the enlarged reproduction mode.

In addition, when the first zoom control button 200 is provided as a menu button (109 in FIG. 4), the user may set the magnification adjustment interval in advance by operating the menu button 109 regardless of whether the zoom mode is in the enlarged playback mode. . In this case, steps S102 and S104 may be omitted in the flowchart of FIG. 6.

When the second zoom control button 202 of FIG. 5 is input, the magnification is adjusted according to the set magnification interval (S108).

This process may be continued until the time when the enlarged reproduction ends (S110).

For example, in the initial setting state in which the first zoom control button 200 is not input (0-stage zoom), the magnification interval is increased by 1, 2, 3, ..., 23 steps for the 3264x2448 image size shown in Table 1. It is set in one step interval.

For example, when the first zoom control button 200 is input once (single-stage zoom), the magnification interval is 2 step intervals up to 1, 3, 5, ..., 23 steps for the 3264x2448 image size shown in Table 1. Is set.

For example, when the first zoom control button 200 is input twice (two-stage zoom), the magnification adjustment interval is 3 step intervals up to 1, 3, 5, ..., 23 steps for the 3264 × 2448 image size shown in Table 1. Is set.

In this way, in the digital camera, when the user inputs the jog dial 117 provided with the function of varying the magnification adjustment interval of the first zoom control button 200 to the left and right, 0 step zoom ↔ 1 step zoom ↔. It is changed by ↔n step zoom.

This magnification adjustment process is equally applied to the case where the first zoom control button is provided by the menu button (109 in FIG. 4), and the user sets the magnification adjustment interval in advance by menu operation.

As the zoom buttons 106 and 107 provided with the function of the second zoom control button 202 are input in the state where the magnification adjustment interval is set as described above, the image is enlarged and reduced at the set interval.

The above embodiments have been described with reference to a digital camera as an example of an image processing apparatus to which the present invention can be applied, but the present invention is not limited thereto. A person skilled in the art is an image processing apparatus capable of expanding and reproducing a stored image of the present invention. A camera phone, a personal digital assistant (PDA), a PMP equipped with an operation button that can be used as a function of a first zoom control button and a second zoom control button. This can be applied when the image is enlarged and played back in (portable multimedia player).

The best embodiments have been disclosed in the drawings and specification above. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

As described above, according to the digital image processing apparatus of the present invention, the magnification adjustment interval can be varied by the first zoom control button, and the magnification can be adjusted by the second zoom control button. As a result, the user can quickly check the required portion of the desired captured image at a desired magnification.

The invention is not limited to the examples described above and represented in the drawings. Those skilled in the art taught by the above-described embodiments, many modifications to the above-described embodiments are possible by substitution, erasure, merging, etc. within the scope and object of the present invention described in the following claims.

Claims (2)

Shooting unit for taking an image; A storage unit for storing the captured image; A first zoom control unit for setting an adjustment interval of the reproduction magnification which is an interval at which the magnification is changed when changing the magnification of the reproduced image; A second zoom controller which varies the magnification at an adjustment interval of the reproduction magnification set by the first zoom controller; An image processing unit for converting a photographed image into data in a storage format and outputting the converted image to the storage unit, selecting an image to be enlarged among the stored images, and performing an enlargement process according to a magnification set by the second zoom controller; And And a display unit for displaying the magnified image. The method of claim 1, And a default value of an adjustment interval of a reproduction magnification is set according to the size of the selected image.

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