KR101825147B1

KR101825147B1 - Photographing method for optical stabilizer of the digital image

Info

Publication number: KR101825147B1
Application number: KR1020150182917A
Authority: KR
Inventors: 주진용
Original assignee: 주진용
Priority date: 2015-12-21
Filing date: 2015-12-21
Publication date: 2018-02-06
Also published as: KR20170073991A

Abstract

When photographing a stationary subject or a moving subject with a digital camera such as a smart phone or a DSLR, the photographing image in which the focus is not correct due to shaking or shaking of the photographer, or the image of the subject is shaken is corrected and optimized The present invention relates to a shake correction photographing method of a digital photographed image, in which a camera temporarily stores image data of a moving image type and temporarily stores the image data in a memory; An image capture step of capturing image data in at least one setting interval selected from before and after the shooting time point while the camera collects image data; A captured image output step in which the camera outputs a captured image of the captured image data; And a photographing image selecting step in which the camera stores image data of the selected photographing image among the outputted photographing images.

Description

TECHNICAL FIELD [0001] The present invention relates to a digital still image capturing method,

When photographing a stationary subject or a moving subject with a digital camera such as a smart phone or a DSLR, the photographing image in which the focus is not correct due to shaking or shaking of the photographer, or the image of the subject is shaken is corrected and optimized And relates to a shake correction photographing method of a digital photographing image.

Generally, when a desired subject is photographed by using a camera, if an external shock or a camera shake occurs due to a momentary mistake of the photographer, the shot is not focused and an image is shaken.

When a subject is photographed with a camera, a short shutter speed equal to or higher than a constant speed is required to obtain a shake-free image. Here, the shutter speed means that the exposure time for light is adjusted so that the image is captured at a proper brightness. In the case of a SLR (Single Lens Reflex) camera using 35 mm film or the corresponding digital camera, a short shutter speed . Therefore, as the shutter speed becomes shorter, a fast moving object can acquire a shake-free image.

On the other hand, in the case of a long shutter speed, there is a high possibility that the camera is shaken during the time when the shutter is open, resulting in a wobble or a blurred image due to afterimage.

This requires techniques to prevent and correct camera shake, and techniques to prevent and correct camera shake are evolving.

Just a few years ago, the shake correction, which was found only in certain digital single-lens reflex (DSLR) cameras, has been widely applied to general compact digital cameras beyond high end digital cameras.

The performance of the camera of the smartphone is continuously upgraded to realize the image quality and performance of the general camera, and the anti-shake prevention technology is gradually applied to some high-end mobile phone camera module of 5 million pixels or more.

In the past, it has been necessary to mount a sensor for detecting camera shake, that is, a vibration sensor, in order to perform the above-described shake correction. Most of the cameras that support the shake correction function operate the gauges 15 and 35 of the viewfinder 10 or the display 30 (LCD window) as shown in Figs. 1A and 1B, respectively, ) To let you know the degree of tremor or warning messages, etc. That is, conventionally, whether or not the camera is shaken is provided to the photographer as visualized gauge information. Since the conventional photography method relies on visuals for most of the actions necessary for taking a picture by focusing on a photographing composition, if such additional visualization information becomes too large, it becomes difficult to intuitively sense all the information at the same time, There was a problem.

In addition, in the case of a digital camera, in order to confirm whether a photographed subject of a photographer is clearly marked or shaken, a complicated procedure of calling up a photographed picture in a reproduction mode and then confirming it with eyes using an enlargement function And when the photographs were shaken, there was the inconvenience that the photographing had to be taken again and taken again.

Prior Art Document 1. Patent Registration No. 10-0819301 (published on Mar. 4, 2008)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a shake correction photographing method of a digital photographing image capable of photographing and collecting an optimum photographing image intended by a photographer, And to solve the proposal of the present invention.

According to an aspect of the present invention,

An image data temporary storage step in which the camera collects image data of a moving image type and temporarily stores the image data in a memory;

An image capture step of capturing image data in at least one setting interval selected from before and after the shooting time point while the camera collects image data;

A captured image output step in which the camera outputs a captured image of the captured image data; And

A photographing image selecting step in which the camera stores image data of a selected photographing image out of the outputted photographing images;

A shake correction photographing method of a digital photographing image.

The present invention has the effect of minimizing the afterimage and blurring of an image due to shaking or out of focus, etc., regardless of the motion of the subject or the shaking of the camera, .

In addition, the present invention has an effect that a target screen can be widely photographed and expressed for a longer time than a simple snapshot in the past, and a flexible connection flow is also exhibited in editing a new video to create a snapshot.

1 is a block diagram showing an embodiment of a camera for carrying out a correction photographing method according to the present invention,
FIG. 2 is a flowchart sequentially showing an embodiment of a correction photographing method according to the present invention,
FIGS. 3 to 5 are views schematically showing an embodiment of a photographing mode by the correction photographing method according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

A camera 100 for implementing a correction imaging method according to the present invention includes a lens module 110 comprising a main lens for condensing incident light and a shutter for adjusting the condensed incident light; A photoelectric conversion module 120 having a CCD (Charge Coupled Device) for photoelectric conversion of a two-dimensional optical image from the lens module 110 into a one-dimensional electric signal and a CCD driving circuit portion for driving the CCD; A pre-signal processing module 130 having an electrical signal received from the photoelectric conversion module 120 and having color separation, black and white level setting and gradation conversion circuits, and the like; An A / D converter 141 for converting analog signals processed in the entire signal processing module 130 into digital signals, and a JPEG (Digital Signal Processor) A main signal processing module 140 comprising a digital signal processing unit 142 for performing compression / extension of data in a Joint Photographic Coding Experts Group (Joint Photographic Coding Experts Group) scheme; A memory 150 for recording and reproducing image data processed by the main signal processing module 140; A key input module 180 for key input for loading data into the memory 150 or designating a special effect mode such as image editing; An arithmetic processing module 160 for interpreting the input signal received by the key input module 180 and processing image data to the main signal processing module 140 and the memory 150; A display module 170 for displaying the photographed image so that the photographer can confirm the output of the A / D conversion unit 141 through a display element such as an LCD (Liquid Crystal Device) or the like; And a video catch module 190 for catching and processing the shot image within the set period in the image data.

The memory 50 includes a DRAM for storing temporary image data generated in the process of image data input through the lens, and a flash RAM for storing image data in which the still image for the subject 10 is compressed by the JPEG method .

The correction shooting method according to the present invention based on the camera described above will be described in more detail below.

FIG. 2 is a flowchart sequentially showing an embodiment of a correction photographing method according to the present invention, and FIGS. 3 to 5 are views schematically showing an embodiment of a photographing state by a correction photographing method according to the present invention. , And will be explained with reference to this.

S10; Image collection phase

The camera 100 of the present embodiment can photograph an image of the subject 10 through the lens module 110 and the photoelectric conversion module 120 (see FIG. 1) while photographing a stop target or an operation target ), The entire signal processing module 130, the main signal processing module 140, and the operation processing module 160.

3, the digital camera 100 photographs and temporarily stores the subject 10 in real time in order to perform a general photographing operation or a moving picture photographing operation. The display module 170 displays an image of the subject 10 in the operation processing module 160, And displays the captured image 20 of the received image data of the moving image type according to the control of the control unit 20.

S20; Image data temporary storage step

The operation processing module 160 temporarily stores the image data of the moving image type collected through the control of the main signal processing module 140 in a DRAM of the memory 150 or the like.

When the photographer sets the camera 100 in the general picture mode, the calculation processing module 160 sets the memory 150 as a temporary environment and stores and deletes the image data in the order of FIFO (First In, First Out). However, when the photographer sets the camera 100 in the moving image shooting mode, the memory 150 is set as a storage environment and the image being shot is stored as moving image data.

S30; Image capture step

The photographer collects image data of the subject 10 in real time in order to photograph the subject 10 and photographs the subject at the corresponding point in time IM3 by operating the key input module 180 such as a shutter at a necessary moment.

According to the above-described method, the image catch module 190 catches the captured image IM3 of the viewpoint S3 as corresponding image data of the photographing point S3 and displays the setting interval S2 to S4 (IM2, IM4) in the captured image data. Image data corresponding to the photographed images IM2 to IM4 of the setting sections S2 to S4 are temporarily stored in the memory 150 under the control of the arithmetic processing module 160. [ That is, if a moving image photographed in the normal photograph mode is temporarily stored in the DRAM and the photographer operates the shutter, the image catch module 190 not only captures image data of the photographing time point S3 at that moment but also photographs the photographing time point S3 The image data within the set range (S2 to S4) is also stored as a reference.

For reference, the subject 10 of the present embodiment is a cap-wearing worker and the captured images IM1 to IM4 of the image data collected in real time on the camera 100 are the patterns in which the caps 21a to 24a are blown in the wind. Also, the images IM2 to IM4 of the image data in the setting sections S2 to S4 are the images of the worker's hats 22a, 23a and 24a starting to peel off and flying in the wind.

In addition, the time difference of the present embodiment between S1 and S4 may be 0.1 invitation, 1.0 invitation, or 1.0 second. It is also possible to catch all of the captured images in the before and after time zones on the basis of the shooting time point, or to capture a selected one of the before or after time zones.

In addition, even when a photographer uses a camera 100 to photograph a moving image, photographing can be performed simultaneously. For example, the image catch module 190 catches a photographed image during a setting period after image capturing as image data while the photographer is shooting a moving image.

S40; Outputting the shot image

The calculation processing module 160 outputs the image data of the photographed images IM2 to IM4 temporarily stored in the memory 150 to the display module 170 as shown in Figure 5 and outputs the image data to the display module 170 Thereby making it possible to select the most optimum captured image in the captured images IM2 to IM4.

In this embodiment, the photographed image initially output by the display module 170 after the photographing is the photographed image IM3 captured at the photographing time point S2 of the photographer, and the outputted photographed image IM3 is shaken or out of focus The arithmetic processing module 160 performs a scrolling (SC) operation by the moving picture method shown in the drawing of FIG. 5 (a), a selection among a plurality of shot images IM2 to IM4 shown in FIG. 5 (b) To be selected by the photographer.

The former embodiment will be described in more detail. A plurality of photographed images IM2 to IM4 are output to the display module 170 in the form of a moving image so that the photographer can adjust the scrolling (SC) .

The latter embodiment will be described in more detail. In this embodiment, a plurality of photographed images IM2 to IM4 in the corresponding section S2 to S4 are arranged in a line so that the photographer can select the photographed images. A plurality of shot images IM2 to IM4 in the corresponding sections S2 to S4 are sequentially output to the display module 170 so that the photographer can select an optimum shot image on the entire screen of the display module 170 did.

Other As for the correction shooting method according to the present invention, if an environment in which one shot image can be selected from a plurality of shot images IM2 to IM4 captured by the image catch module 190 is configured, And the like.

5, the hat of the subject moves at a large interval, but the time difference for each of the actual sections S1 to S4 is difficult to visually distinguish the difference, The catch and the afterimage phenomenon of the captured images IM2 to IM4 can be easily identified and selected.

S50; Selecting a shot image

The arithmetic processing module 160 finally stores the captured image IM2 selected by the photographer among the plurality of captured images IM2 to IM4 captured by the image catch module 190 in the memory 150, IM3, IM4) are deleted.

As a result, instead of the photographed image IM3 of the photographing time point S2, the optimum photographed image M2 is stored in the memory 150 as a final photographed image, Images can be collected.

In the above-described embodiment, the photographer directly selects the photographed image. However, if the calculation processing module 160 analyzes the photographed image at the time of photographing and confirms the afterimage image, the photographed image of the setting section is further analyzed to obtain the optimum specification And automatically stores the image data of the captured image captured as the final captured image.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, 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.

Claims

When the camera 100 is set to the 'normal picture mode', the operation processing module 160 stores the image data of the moving image type in the memory 150 so that the image data is stored and deleted in the FIFO order. A temporary storage step of setting the memory 150 as a storage environment so that the image being photographed is stored as moving image data when the camera 100 is set to the 'moving image shooting mode';
An image capture step of capturing image data in at least one setting section selected from before and after the shooting time as a set time interval while the camera collects image data;
A captured image output step in which the camera outputs a captured image of the captured image data; And
And a camera image storage step of storing image data of a selected image among the output images,
In the captured image output step, a plurality of captured images of the captured image data are arranged and output for each shooting time, and a captured image of the captured image data is output as a moving image;
Wherein the picked-up image selecting step includes the step of storing the selected one of the picked-up images and the step of deleting the other cached image data excluding the stored image data
And a shake correction method for digital shots.

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