WO2014023132A1

WO2014023132A1 - Method, apparatus, and mobile terminal for improving digital zoom display effect

Info

Publication number: WO2014023132A1
Application number: PCT/CN2013/077507
Authority: WO
Inventors: 杨春妮
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-08-08
Filing date: 2013-06-19
Publication date: 2014-02-13
Also published as: CN103581534A

Abstract

Disclosed are a method, an apparatus, and a mobile terminal for improving a digital zoom display effect. The method comprises: obtaining an initial image of a shot scene, and obtaining a digital zoom multiple parameter; performing digital zoom processing on the initial image according to the obtained digital zoom multiple parameter, and generating a processing complete message after the digital zoom processing; and generating an automatic focusing command according to the processing complete message, and performing, according to the automatic focusing command, focusing processing on the image processed by the zoom processing. By means of the solutions of the present invention, the problem that the image is not clear after digital zoom is solved, and the definition of image display after digital zoom and the user experience can be improved.

Description

Method, device and mobile terminal for improving digital zoom display effect

The present invention relates to a camera digital zoom and auto focus technology for an embedded mobile terminal, and more particularly to a method, device and mobile terminal for improving the digital zoom display effect. Background technique

At present, with the continuous development of communication technology, embedded terminal products, especially smart phones and tablets, have become an indispensable part of people's daily life. At the same time, in these electronic products, their camera functions have gradually become more and more important. Developed into one of its most basic configurations.

However, in the design process of these electronic products, due to the limitation of the motherboard and the external dimensions, the camera carried by the camera generally cannot support the optical zoom. Therefore, in order to facilitate the user to take pictures with different depth of field, the designer can only resort to The camera's digital zoom function is used for zooming.

The realization principle of the digital zoom is: by using a processor chip of a mobile terminal (for example, a mobile phone), the area of each pixel in the image is increased, that is, the color of the periphery of the existing pixel is judged by the processor, and according to the periphery The color case is inserted into a pixel added by a special algorithm to achieve the purpose of magnifying the image.

In addition to the digital zoom function, the camera on the mobile terminal currently supports the auto focus function, which makes the captured photos clearer. Its function is realized by locking the camera into the voice coil motor. The voice coil motor is abbreviated as VCM (Voice Coil Motor), which is mainly composed of a coil, a magnet group and a spring piece. The coil is fixed in the magnet group by two upper and lower elastic pieces. When the coil is energized, the coil generates a magnetic field, and the coil magnetic field interacts with the magnet group, causing the coil to move upward, so that the camera locked in the coil moves along with it. When the power is turned off, the coil returns under the elastic force of the spring. This achieves its autofocus function.

Since the camera's digital zoom function does not change in focus, it is only through the inside of the processor. The algorithm enlarges the captured image, so that the clarity of the image is reduced to some extent, so that the quality of the image is relatively poor compared with the normal situation, thereby reducing the user's photographing experience.

A digital zoom method and apparatus for an image pickup apparatus that performs image by digital zoom after receiving a digital zoom trigger command is disclosed in Chinese Patent Application Publication No. 102 404 497 A, the disclosure of which is incorporated herein by reference. At the same time, at the same time, based on the zoom requirement of the digital zoom trigger command, the pseudo lens is controlled to perform precise synchronization and expansion with the image processing. From the external performance, it can accurately simulate the optical zoom, thereby giving the user the same sensory enjoyment as the optical zoom lens. . However, there are still some shortcomings. In the patented technical solution, an additional pseudo lens is required to be mounted on the camera module to simulate the expansion and contraction of the optical zoom lens, but this is not suitable for a compact mobile device. Terminal equipment, in addition, because of the need to add an additional lens, the system cost is large. Summary of the invention

In order to solve the technical problem that the image obtained in the prior art is digitally zoomed on a compact mobile terminal, the image obtained by the embodiment of the present invention is improved, and the object of the present invention is to provide a method for improving the digital zoom display effect. The device and the mobile terminal can enhance the display effect after digital zoom.

In order to achieve the object of the present invention, the present invention is implemented by the following technical solutions:

A method for improving the digital zoom display effect, the method comprising:

Obtaining an initial image of the captured image, and acquiring a digital zoom multiple parameter;

And performing digital zoom processing on the initial image according to the obtained digital zoom multiple parameter, and generating a processing completion message after the digital zoom processing;

An autofocus command is generated according to the processing completion message, and focus processing is performed on the processed image after the zoom processing according to the autofocus command.

Preferably, the lifting digital zoom display is performed before acquiring an initial image of the captured image The method of effect also includes:

A module for acquiring an initial image of the captured picture and a module configured to acquire a digital zoom multiple parameter respectively perform an initialization operation.

Preferably, the module for acquiring the initial image of the captured picture and the module for configuring the digital zoom multiple parameter are respectively configured to complete the initialization operation by setting respective corresponding registers.

Preferably, the acquiring the digital zoom multiple parameter is: acquiring a preset digital zoom multiple parameter from the storage medium, or acquiring the digital zoom multiple parameter from the digital zoom multiple parameter input device.

Preferably, after the focus processing is performed on the processed image after the zoom processing according to the autofocus command, the method for improving the digital zoom display effect further includes:

The processed image after the focus processing is displayed.

A device for improving a digital zoom display, comprising a camera control module, a camera module module, a digital zoom module, and an auto focus module, wherein

a camera module module configured to acquire an initial image of the captured image and send the initial image to the digital zoom module;

a camera control module configured to acquire a digital zoom multiple parameter and send the digital zoom multiple parameter to the digital zoom module; and, further configured to generate an auto focus command according to the acquired processing completion message and send the same to the auto focus module;

The digital zoom module is configured to perform digital zoom processing on the initial image according to the obtained digital zoom multiple parameter, and then feedback processing completion message to the camera control module;

The autofocus module is configured to perform focusing processing on the processed image after the zoom processing according to the acquired autofocus command.

Preferably, the camera control module is further configured to separately control the camera module module and the auto focus module to perform an initialization operation.

Preferably, the camera module module and the auto-focus module respectively set respective phases The register should be initialized.

Preferably, the manner in which the camera control module acquires the digital zoom multiple parameter is: acquiring a preset digital zoom multiple parameter from the storage medium, or acquiring the digital zoom multiple parameter input device connected to the camera control module by wire/wireless connection Digital zoom factor.

Preferably, the device for improving the digital zoom display effect further includes:

The display module is configured to display a processed image after the focus processing is performed by the auto focus module. A mobile terminal, comprising the device for enhancing a digital zoom display effect as described above, the device comprising a camera control module, a camera module module, a digital zoom module, and an auto focus module, wherein

According to the technical solution of the present invention, the present invention can solve the problem that the image preview is unclear after the digital zoom is improved by using the auto-focus module provided by the camera module module, thereby improving the digital zoom display effect. By adding other additional modules, the sharpness of the image display after digital zoom can be improved, thereby enhancing the user's photographing experience. DRAWINGS

1 is a schematic flow chart of a method for improving a digital zoom display effect according to an embodiment of the present invention; and FIG. 2 is a schematic structural diagram of an apparatus for improving a digital zoom display effect according to an embodiment of the present invention. detailed description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and specific embodiments to enable those skilled in the art to understand the invention. .

FIG. 1 is a schematic flowchart of a method for improving a digital zoom display effect according to an embodiment of the present invention, and FIG. 2 is a schematic structural diagram of an apparatus for improving a digital zoom display effect for implementing the method for improving a digital zoom display, wherein the digital zoom display effect is improved. The device may include a camera control module 20, a camera module module 10, a digital zoom module 30, and an auto-focus module 40. As shown in FIG. 1, the method for improving the digital zoom display effect includes:

5101. Acquire an initial image of a captured image;

Specifically, the initial image of the captured image may be acquired by the camera module module 10, and the initial image is sent to the digital zoom module 30;

5102. Obtain a digital zoom multiple parameter.

Specifically, the digital zoom multiple parameter can be obtained by the camera control module 20, and the digital zoom multiple parameter is sent to the digital zoom module 30;

5103. Perform digital zoom processing on the initial image according to the obtained digital zoom multiple parameter, and generate a processing completion message after the digital zoom processing is completed;

Specifically, the digital zoom module 30 may perform digital zoom processing on the initial image according to the acquired digital zoom multiple parameter, and then generate a processing completion message and feed back to the camera control module 20;

5104. Generate an autofocus command according to the processing completion message.

Specifically, the auto-focus command may be generated by the camera control module 20 according to the acquired process completion message and sent to the auto-focus module 40;

5105. Perform focus processing on the processed image after the zoom processing according to the autofocus command.

Specifically, the autofocus module 40 can perform zoom processing according to the acquired auto focus command. The subsequent processed image performs focus processing.

In the apparatus for enhancing the digital zoom display effect shown in Fig. 2, the camera control module 20 is configured to schedule the operations of the plurality of modules included in the apparatus for enhancing the digital zoom display effect after the camera function of the mobile terminal is activated.

The digital zoom module 30 can be built in the processor of the mobile terminal or can be independently set and configured to implement the digital zoom function of the camera. The digital zoom function of the camera is prior art. ^: Detailed description.

The auto-focus module 40 adjusts the movement of the voice coil motor VCM according to the acquired auto-focus command, thereby performing focus processing on the processed image after the zoom processing. The technical content of the autofocus module 40 for implementing autofocus is prior art, which will not be described in detail herein.

Preferably, before the acquiring the initial image of the captured image, the method for improving the digital zoom display effect further includes:

S100. A module configured to acquire an initial image of the captured image and a module configured to acquire a digital zoom multiple parameter respectively perform an initialization operation;

Here, the module for configuring the initial image of the captured image is configured to configure the camera module module.

10; configured to obtain the digital zoom multiple parameters of the module is configured with the auto focus module 40;

Specifically, the camera module module 10 and the auto focus module 40 can be separately controlled by the camera control module 20 to perform an initialization operation.

Preferably, the module for acquiring an initial image of the captured image and the module for acquiring the digital zoom multiple parameter respectively perform an initialization operation by setting respective corresponding registers; specifically, the camera module module 10 and the auto focus module are 40 complete the initialization operation by setting respective corresponding registers.

Preferably, the acquiring the digital zoom multiple parameter is: acquiring a preset digital zoom multiple parameter from the storage medium, or acquiring the digital zoom multiple parameter from the digital zoom multiple parameter input device. Specifically, a preset digital zoom magnification parameter is acquired from a storage medium (not shown), or is obtained from a digital zoom multiple parameter input device (not shown) connected to the camera control module 20 by wire/wireless connection. The digital zoom factor parameter.

S106. Display a processed image after being processed by focusing;

Specifically, the processed image after the focus processing is performed by the auto-focus module 40 may be displayed by the display module 50, wherein the display module 50 may be an information display device configured as an information display such as an LCD display module, an LED display module, or the like.

When the image zooming process is performed by the method for improving the digital zoom display effect provided by the embodiment of the present invention, in one embodiment, the corresponding operation flow is as follows:

Step A. Control the camera module module 10 and the auto focus module 40 through the camera control module 20 to perform an initialization operation;

Step B. Take the initial image of the picture through the camera application, and in the camera application, select the digital zoom factor parameter to be set;

Here, after the initial image of the captured image is captured by the camera application, the initial image of the captured image is sent to the camera module module 10 through the application programming interface (API, Application Programming Interface) corresponding to the camera application;

After the digital zoom factor is selected by the camera application, the selected digital zoom factor is sent to the camera control module 20 through the corresponding API of the camera application;

Step C. The camera module module 10 sends an initial image of the shooting picture to the digital zoom module 30; the camera control module 20 sends the selected digital zoom factor to the digital zoom module 30; Step D. The digital zoom module 30 is based on the digital zoom factor parameter pair The initial image is subjected to a digital zoom processing operation, and the result is returned to the camera control module 20 upon completion.

Step E. The camera control module 20 sends an auto focus command to the auto focus module 40; Step F. The auto-focus module 40 touches the vocal ring motor VCM according to the auto-focus command to complete the focusing operation, so that the captured image is in a clear state.

Step G. Display the clear captured image after digital zoom and autofocus on the LCD display module 50.

Accordingly, with continued reference to FIG. 2, an embodiment of the present invention further provides an apparatus for improving the digital zoom display effect, including a camera control module 20, a camera module module 10, a digital zoom module 30, and an auto-focus module 40, wherein

The camera module module 10 is configured to acquire an initial image of the captured image, and send the initial image to the digital zoom module 30;

The camera control module 20 is configured to acquire a digital zoom multiple parameter, and send the digital zoom multiple parameter to the digital zoom module 30; and, further configured to generate an auto focus command according to the acquired processing completion message and send the same to the auto focus module 40;

The digital zoom module 30 is configured to perform digital zoom processing on the initial image according to the acquired digital zoom multiple parameter, and then feedback processing completion message to the camera control module 20;

The auto-focus module 40 is configured to perform focusing processing on the processed image after the zoom processing according to the acquired auto-focus command.

The camera control module 20 is configured to schedule the operations of the plurality of modules included in the device for enhancing the digital zoom display effect after the camera function of the mobile terminal is activated.

The auto-focus module 40 adjusts the movement of the voice coil motor VCM according to the acquired auto-focus command, thereby performing focus processing on the processed image after the zoom processing. The technical content of the autofocus module 40 to achieve autofocus is prior art, and this article does not describe it in detail.

Preferably, the camera control module 20 is further configured to separately control the camera module module 10 And the auto-focus module 40 performs an initialization operation.

More preferably, the camera module module 10 and the auto-focus module 40 respectively perform an initialization operation by setting respective corresponding registers.

Preferably, the manner in which the camera control module 20 acquires the digital zoom multiple parameter is: acquiring a preset digital zoom multiple parameter from the storage medium, or a digital zoom multiple parameter input device wired/wirelessly connected to the camera control module 20 Get the digital zoom factor parameter.

The display module 50 is configured to display a processed image after the focus processing is performed by the auto-focus module 40, wherein the display module 50 can be an information display device configured to display information such as the LCD display module 50 and the LED display module 50.

In combination with the above apparatus for improving the digital zoom display effect, the present invention further provides a specific embodiment. When the mobile terminal (for example, a mobile phone) has the device for enhancing the digital zoom display effect, the digital zoom is realized by the device for improving the digital zoom display effect. The operation process is as follows:

Step 1: The user activates the camera control module 20 by clicking the "photograph" application in the mobile phone; Step 2: The camera control module 20 sends an initial control command to the camera module module 10 and the auto-focus module 40;

Step 3: The camera module module 10 completes the initialization work by setting a register, so that the camera is in a normal working state, so that the initial image data of the captured image can be correctly acquired. Step 4: Similarly, the auto-focus module 40 is completed by setting a register. Initialize, ensure that the auto focus function works properly, and obtain clear image data;

Step 5: In the menu of the "Photography" application, the user selects or sets the appropriate digital zoom factor parameter;

Step 6: The camera control module 20 transmits the set digital zoom multiple parameter to the digital zoom module 30;

Step 7: The digital zoom module 30 performs an initial map according to the received digital zoom multiple parameter. Image enlargement/reduction operation, and returning the processing completion message to the camera control module 20;

Step 8: The camera control module 20 generates an auto focus command according to the acquired processing completion message and sends it to the auto focus module 40 to control the auto focus module 40 to activate the auto focus function. Step 9: The auto focus module 40 drives the voice coil motor VCM. Make the processed image after digital zoom clear, thus achieving the purpose of improving the sharpness of the digital zoom;

Step 10: Display the processed image of the captured image that has been digitally zoomed and AF-focused on the display module 50.

In addition, the embodiment of the present invention further provides a mobile terminal. Referring to FIG. 2, the device includes the device for improving the digital zoom display effect, and the device includes a camera control module 20, a camera module module 10, a digital zoom module 30, and an auto focus module 40, wherein

For a detailed description of the apparatus for improving the digital zoom display effect included in the mobile terminal provided by the embodiment, reference may be made to the above description of the method for improving the digital zoom display effect, which will not be repeated herein.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related In the technical field, the same is included in the patent protection scope of the present invention.

II

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Claims

claims

1. A method for improving the display effect of digital zoom, wherein the method includes: obtaining the initial image of the photographed picture, and obtaining the digital zoom factor parameter;

Perform digital zoom processing on the initial image according to the obtained digital zoom factor parameter, and generate a processing completion message after the digital zoom processing;

An autofocus command is generated based on the processing completion message, and focus processing is performed on the processed image after zooming based on the autofocus command.

2. The method for improving digital zoom display effect as claimed in claim 1, wherein before obtaining the initial image of the photographed scene, the method further includes:

The module configured to obtain the initial image of the captured screen and the module configured to obtain the digital zoom factor parameters perform initialization operations respectively.

3. The method for improving the display effect of digital zoom as claimed in claim 2, wherein the module configured to obtain the initial image of the photographed picture and the module configured to obtain the digital zoom factor parameter complete the initialization operation by setting respective corresponding registers. .

4. The method for improving digital zoom display effect as claimed in claim 1, wherein said obtaining the digital zoom factor parameter is: obtaining a preset digital zoom factor parameter from a storage medium, or from a digital zoom factor parameter input device Get the digital zoom factor parameter.

5. The method for improving digital zoom display effect as claimed in any one of claims 1 to 4, wherein, after performing focus processing on the zoomed processed image according to the autofocus command, the method further includes: Displays the processed image after focus processing.

6. A device for improving the display effect of digital zoom. The device includes a camera control module, a camera module module, a digital zoom module, and an autofocus module, wherein,

The camera module module is configured to obtain an initial image of the captured image and send the initial image to the digital zoom module;

The camera control module is configured to obtain the digital zoom factor parameter and use the digital zoom factor The parameters are sent to the digital zoom module; and, further configured to generate an autofocus command based on the obtained processing completion message and send it to the autofocus module;

The digital zoom module is configured to perform digital zoom processing on the initial image based on the obtained digital zoom factor parameter, and then feed back a processing completion message to the camera control module;

The autofocus module is configured to perform focus processing on the zoomed processed image according to the acquired autofocus command.

7. The device for improving digital zoom display effect as claimed in claim 6, wherein the camera control module is further configured to respectively control the camera module module and the autofocus module to perform initialization operations.

8. The device for improving digital zoom display effect as claimed in claim 7, wherein the camera module module and the autofocus module respectively complete the initialization operation by setting their corresponding registers.

9. The device for improving digital zoom display effect as claimed in claim 6, wherein the camera control module obtains the digital zoom factor parameter by: obtaining the preset digital zoom factor parameter from the storage medium, or from The digital zoom factor parameter input device of the camera control module's wired/wireless connection obtains the digital zoom factor parameter.

10. The device for improving digital zoom display effect according to any one of claims 6 to 9, wherein the device further includes: a display module configured to display the processed image after the autofocus module has performed focus processing.

11. A mobile terminal, wherein the mobile terminal includes the device for improving the digital zoom display effect as described in any one of claims 6-10.