TWI440358B - Starting continuous shooting mode method and apparatus thereof - Google Patents

Description

Method and device for automatically starting continuous shooting program

The present invention relates to a photographing apparatus and an operating method thereof, and more particularly to an apparatus capable of automatically starting a continuous shooting function and an operating method thereof.

In photography, in order to capture moving objects, such as moving vehicles, children, birds in flight, the average photographer uses the technique of snapping, that is, moving the camera lens along with the moving object, waiting for the desired image. When it appears, the photographer quickly presses the shutter to shoot. However, due to the time lag phenomenon that digital cameras often have, it is often impossible to capture the desired picture during shooting. The best shooting timing is often missed due to the delay of the digital camera.

In order to let the digital camera capture the best shooting time and take the best picture, various manufacturers have adopted a variety of different methods to solve this problem: such as using camera continuous shooting technology to shoot a series of pictures for the photographer to choose.

However, with the usual continuous shooting technology, since the digital camera needs to complete the writing to the memory card, it can only be continuously shot for a few seconds, which is followed by a storage process of several tens of seconds or even minutes. Since people usually cannot know the exact time when the best picture appears, once the continuous shooting is started, if the desired picture cannot be captured within a few seconds of continuous shooting, the picture is likely to be missed. If you use uninterrupted video recording, it will not only take up a lot of storage space, but also need to improve the performance requirements of the memory card.

Therefore, how to improve the efficiency of shooting success becomes a problem that needs to be solved.

An object of the present invention is to provide a method and apparatus for automatically starting continuous shooting by setting a preset area in a screen and tracking a moving object by object tracking technology, when a moving object enters the preset area. After that, and automatically start the continuous shooting program to improve the efficiency of shooting success.

One aspect of the present invention is to provide a method for automatically starting a continuous shooting program in a digital image capture device. The digital image capturing device is a method for executing the automatic starting continuous shooting program during movement, and the method for automatically starting the continuous shooting program comprises the following steps: first capturing a preview image and forming a preset area in the preview image And then performing an instant image recognition process on the preview image, and the instant image recognition program includes at least performing an object tracking calculation program to detect a moving object image in the preview image, and determining whether the moving object image is In the preset area; when the moving object image is in the preset area, the continuous shooting process is performed.

In one embodiment, the digital image capture device is a digital camera or a handheld device having a digital camera function.

In an embodiment, the preset area may be a rectangular area, a circular area or a polygonal area; or the preview picture is distinguished from the preset area by a single line segment.

In an embodiment, after the step of performing a real-time image recognition process on the preview image, the method further includes: determining whether the image of the moving object is included in the preview image, wherein if the image of the moving object is not included in the preview image, detecting again One of the preview images moves the object image, and if the preview image includes a moving object image, the position of the moving object image in the preview image is checked.

In an embodiment, before the step of performing the continuous shooting process, the method further comprises: setting a shutter and an ISO value of the digital image capturing device according to the magnitude of the momentum obtained by the moving object and the background.

In an embodiment, when the horizontal pixel of the preview picture is 800 pixels, when the momentum value is less than 20 (pixels/second), setting the shutter of the digital image capturing device to 1/60 (seconds), The ISO value is 100; when the momentum value is greater than 20 (pixels/second) but less than 100 (pixels/second), the shutter of the digital image capturing device is set to 1/250 (seconds), and the ISO value is 400; When the momentum value is greater than 100 (pixels/second), the shutter of the digital image capturing device is set to 1/1000 (seconds), and the ISO value is 1600.

In an embodiment, after the step of performing the continuous shooting process, the method further comprises: determining whether the moving object image is in the preset area; and stopping the continuous shooting program if the moving object image is not in the preset area .

Another aspect of the present invention provides an apparatus for automatically starting a continuous shooting program, comprising: an image capturing module for capturing a preview image; an image display for displaying the preview image; and an input unit for forming a preset The area is in the preview image; an image processor performs an instant image recognition process on the preview image, wherein the instant image recognition program includes at least performing an object tracking calculation program to detect a moving object image in the preview image, And determining whether the moving object image is in the preset area; and a control unit, if the moving object image is in the preset area, controlling the image capturing module to perform a continuous shooting process.

In one embodiment, the image capture module is a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS).

In summary, the present invention first sets a preset shooting area when shooting an object in motion, and immediately starts the continuous shooting function after the moving object enters the preset shooting area, so the shooting process can be guaranteed. With the effect, and greatly reduce the user's need to wait for a long time to be able to shoot the hard work.

The invention automatically sets the shooting target during the shooting process by using a preset “object tracking” technology, and automatically starts the continuous shooting function after the target object reaches the preset shooting area of the user, thereby increasing the shooting success. chance. The “object tracking” technique mainly uses mathematical algorithms to identify whether there are moving foreground objects on the screen. When it is determined that there is a moving object on the screen, the object will be continuously tracked, and the shutter speed and ISO value of the camera will be adjusted according to the magnitude of the motion vector obtained by the object and the background. The standard for capturing objects. Moreover, the present invention can perform an automatic start continuous shooting process in camera movement, which greatly enhances the chance of successful shooting.

The concept of the present invention is that after the object enters the area preset by the user on the screen, the continuous shooting is automatically turned on, and the relationship between the magnitude of the momentum value and the shutter speed and the ISO value will be mentioned below.

FIG. 1 is a view showing a preferred embodiment of a digital image capturing device with an automatic start continuous shooting function according to the present invention. The digital image capture device 100 includes an image processor 101, an image capture module 102, an image display 103, a control unit 104, and an input unit 105, wherein the components are electrically connected to each other. The digital image capture device 100 is, for example, a digital camera or a handheld device having a digital camera function.

The image capturing module 102 is configured to convert external images into electronic signals, generally using a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) device. . The image processor 101 can receive and process the output signal of the image capturing module 102. The image display 103 provides an output of the sensing image and the operation screen, and is generally a liquid crystal display (LCD).

The input unit 105 provides functional operation of the digital image capture device 100. The control unit 104 can input a preset shooting area, a photographing image quality, activate "object tracking", a continuous shooting interval, and the like via the input unit 105, and display a corresponding operation screen via the image display 103.

In an embodiment, the input unit 105 is, for example, a stylus, and performs function input by clicking an operation function displayed on the image display 103, or directly draws a preset shooting area directly on the touch screen. . After the input unit 105 inputs the “object tracking” function to the control unit 104, the control unit 104 controls the image processor 101 to process the output signal of the image capturing module 102 to identify whether there is a moving foreground on the screen. The object simultaneously determines whether the foreground object enters a preset shooting area to activate the corresponding continuous shooting function. It is worth noting that the above-mentioned digital image capturing device can perform an automatic start continuous shooting process on the move, which greatly enhances the chance of successful shooting.

Hereinafter, the operational flow of the automatic start continuous shooting function of the present invention will be described in detail. Fig. 2 is a flow chart showing the method of automatically starting the continuous shooting function of the present invention, please refer to Fig. 1 and Fig. 2 at the same time.

First, in step 201, after the digital image capturing device 100 is turned on, the user can start the "object tracking" function by entering the input unit 105 and enter the preset shooting area or the setting of the photographing quality to enter the automatic start continuous shooting. work. Wherein, when the user selects the setting of the preset shooting area, the preset shooting area setting screen in FIG. 3 can be entered, and a preview screen is displayed on the image display 103. In an embodiment, The user can directly draw a preset shooting area 107 on the image display 103 by using an input unit 105, such as a stylus. It should be noted that the preset shooting area 107 is not limited to a rectangle, and may be a circle or a polygon. In addition, in another embodiment, the preview picture is further divided into a preset shooting area 107 by a single line segment. In addition, the photo quality setting determines the file size of a single photo. The higher the quality, the larger the file, and conversely the smaller the file.

After performing the above-mentioned various reservation settings, proceed to step 202 to retrieve a preview screen. When the user moves the digital image capturing device 100 to a target to capture a desired moving image, the image capturing module 102 of the present invention can capture the image of the target as a preview image. It should be noted that the preview picture captured by the present invention is not limited to capturing a target object by a fixed lens, and the lens of the present invention can also move with the movement of the object, so that the background of the preview picture is not fixed. However, the change of the preview screen does not change the setting of the preset shooting area in step 201, that is, if the preset shooting area is set in a specific pixel area on the image display 103, no matter how the background of the preview picture changes. The preset shooting area is still in the specific pixel area on the image display 103.

Then, in step 203, the object moving in the preview picture is detected. After the image capture module 102 captures the image of the target, the control unit 105 controls the image processor 101 to perform an image recognition process by using an image recognition technology, such as an object tracking technology, to detect the movement in the preview image. object.

Next, in step 204, it is determined whether there is a moving object in the preview picture. After the image processor 101 successfully recognizes the preview image captured by the image capturing module 102, the image processor 101 determines whether there is a moving object in the preview image captured by the image capturing module 102.

If the image processor 101 determines that the preview image captured by the image capture module 102 does not have a moving object, the present invention will reply to step 203 to detect the moving object in the preview image again. Conversely, capture a user action image. If the image processor 101 determines that the preview image captured by the image capture module 102 currently has a moving object, the present invention proceeds to step 205 to detect the location of the moving object. In order to determine whether to initiate continuous shooting, after recognizing that there is a moving object in the preview image, the image processor 101 detects the position of the moving object in the preview image in the preview image. And in step 206, it is determined whether the position of the moving object is within the preset shooting area.

If the position of the moving object is not within the preset shooting area, the present invention will return to step 205 to again detect the position of the moving object in the preview image. If the position of the moving object is within the preset shooting area, step 207 is executed to set the shutter and the ISO value. The control unit 105 adjusts the shutter speed and the ISO speed of the digital image capturing device 100 according to the magnitude of the motion vector obtained by the object and the background when the image processing program is performed by the image processor 101 using an object tracking technology. value. The momentum magnitude of the foreground or background is indicated as the amount of displacement pixels per second. The greater the displacement per second, the faster the shutter speed required to capture a clear object will be. In one embodiment, if the horizontal pixels of the image display 103 are 800 pixels, the relationship between the momentum magnitude and the desired shutter speed is as shown in the following table, wherein the smaller the shutter speed, the faster the speed:

The ISO value refers to the sensitivity of the photosensitive element. Generally, if the ISO value is larger, the higher the sensitivity, the shorter the exposure time required. Therefore, if the spot light is not enough, the ISO should be raised to increase the shutter speed. Based on the general condition <20 (pixels per second) ISO as the benchmark, the ISO value changes as follows:

And then proceed to step 208 to enable continuous shooting to take a picture. The control unit 104 controls the digital image capturing device 100 to execute a preset continuous shooting process according to the adjusted shutter speed and the ISO value.

Next, step 209 is performed to determine whether to stop photographing. When the user feels that the shooting target is not a desired screen, the user can interrupt the continuous shooting program through the input unit 105. Therefore, when the continuous shooting program is stopped, the present invention will reply to step 201 to renew the automatic. Start the continuous shooting program. On the other hand, if the continuous shooting program is not stopped, the present invention proceeds to step 210 to detect whether the position of the moving object is still within the preset shooting area. If the position of the moving object is still within the preset shooting area, step 208 is executed to enable continuous shooting automatically. On the other hand, if the position of the moving object is no longer in the preset shooting area, the preset continuous shooting process will be stopped in step 211, and the present invention will return to step 205 to detect the position of the moving object again. It is worth noting that the above-mentioned auto-start continuous shooting program can be executed while the digital image capturing device is moving, greatly improving the chance of successful shooting.

In summary, when the user wants to shoot an object in motion, the process of the present invention can automatically start the continuous shooting function after the moving object enters the preset shooting area, thereby increasing the success of the shooting. opportunity. Moreover, since the shooting area can be set in advance by the present invention, only when the moving object moves to the shooting area, the shooting is performed, so that the shooting process and the effect can be ensured, and the labor that the user needs to wait for a long time to complete the shooting can be greatly reduced.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100. . . Digital image capture device

101. . . Image processor

102. . . Image capture module

103. . . Image display

104. . . control unit

105. . . Input unit

107. . . Shooting area

201~211. . . step

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood.

FIG. 1 is a view showing a preferred embodiment of a digital image capturing device with an automatic start continuous shooting function according to the present invention.

Figure 2 is a flow chart showing the method of automatically starting the continuous shooting function of the present invention.

Figure 3 shows the preset shooting area setting screen.

201~211. . . step

Claims (6)

A method for automatically starting a continuous shooting program for use in a digital image capturing device, wherein the digital image capturing device is a method for executing the automatic starting continuous shooting program while moving, and the method for automatically starting the continuous shooting program includes : capturing a preview image; forming a preset area in the preview image; performing an instant image recognition process on the preview image, wherein the instant image recognition program includes at least performing an object tracking calculation program to detect the preview image One of the moving object images; determining whether the moving object image is in the preset area; setting a shutter and an ISO value of the digital image capturing device according to the magnitude of the momentum obtained by the moving object image and the background; When the moving object image is in the preset area, a continuous shooting process is performed, wherein when the horizontal pixel of the preview picture is 800 pixels, when the momentum value is less than 20 (pixels/second), the digital image capturing device is set. The shutter is 1/60 (seconds), the ISO value is 100; when the momentum value is greater than 20 (pixels/second) but less than 100 (pixels/second), the shutter of the digital image capture device is set. It is 1/250 (seconds), the ISO value is 400; when the momentum value is greater than 100 (pixels/second), the shutter of the digital image capturing device is set to 1/1000 (seconds), and the ISO value is 1600. The method for automatically starting a continuous shooting program as claimed in claim 1, wherein the digital image capturing device is a digital camera or a digital camera Handheld device. The method of automatically starting a continuous shooting program according to claim 1, wherein the preset area is a rectangular area, a circular area or a polygonal area. The method of automatically starting a continuous shooting program according to claim 1, wherein the preset area further comprises distinguishing the preview picture from the preset area by a single line segment. The method of automatically starting a continuous shooting program according to claim 1, wherein after the step of performing a real-time image recognition process on the preview image, the method further comprises: determining whether a moving object image is included in the preview image; If a moving object image is not included, one of the moving object images in the preview image is detected again; and if the preview image includes a moving object image, the position of the moving object image in the preview image is checked. The method of automatically starting a continuous shooting program according to claim 1, wherein after the step of performing the continuous shooting process, the method further comprises: determining whether the moving object image is in the preset area; and if the moving object image is not in the preset In the setting area, the continuous shooting program is stopped.