WO2019090592A1

WO2019090592A1 - Intelligent terminal-based camera shake prevention method and system

Info

Publication number: WO2019090592A1
Application number: PCT/CN2017/110171
Authority: WO
Inventors: 池文羽
Original assignee: 深圳传音通讯有限公司
Priority date: 2017-11-09
Filing date: 2017-11-09
Publication date: 2019-05-16

Abstract

An intelligent terminal-based camera shake prevention method and system, comprising the following steps: capturing an operation instruction; capturing at least one target image according to the operation instruction; monitoring the displacement direction of an intelligent terminal and the displacement amount in the displacement direction during the execution of the operation instruction; comparing the displacement amount to a displacement threshold; when the displacement amount is greater than the displacement threshold, reducing the frame rate of the intelligent terminal; and displaying a clear image in a display interface of the intelligent terminal. By means of monitoring the voltage output values of an acceleration sensor of an intelligent terminal in various directions during an image capturing process, the displacement amount of the intelligent terminal is determined, and the frame rate of the intelligent terminal is adjusted according to the displacement amount, so that the intelligent terminal may display a clear image.

Description

Camera anti-shake method based on intelligent terminal and camera anti-shake system

Technical field

The present invention relates to the field of camera anti-shake technology, and in particular, to a camera anti-shake method based on a smart terminal and a camera anti-shake system.

Background technique

With the development and advancement of technology, the development of intelligent terminals is also changing with each passing day. At present, because of its convenience and functionality, smart terminals have gradually penetrated into all aspects of people's lives and become an indispensable auxiliary equipment in people's lives. In particular, the development of smart terminal camera technology has enabled smart terminals to gradually replace traditional camera equipment and become the main camera or photography tool for people to travel.

However, in the prior art, due to the development of the smart terminal itself, the imaging device still has some defects that cannot be overcome, such as the influence of jitter on the sharpness of the captured image. At present, the commonly used image stabilization systems are divided into two types, a purely mechanical image stabilization system and an electronically controlled image stabilization system. The purely mechanical image stabilization system mainly achieves image stabilization by mechanical structures such as springs, dampers, and universal joints with the camera inertia. This is a relatively traditional image stabilization device called Steadicam; electronically controlled image stabilization The system, which is often referred to as the gimbal, is based on the use of sensors such as gyroscopes and accelerometers as attitude feedback, and the brushless motor as an output device to form a closed-loop feedback system to achieve image stabilization.

However, the above-mentioned anti-shake technology has high requirements on the hardware of the intelligent terminal, and runs counter to the development of the slimming of the smart terminal, and cannot fundamentally solve the problem of camera anti-shake of the smart terminal.

Summary of the invention

In view of the above problems, the present invention provides a camera anti-shake method and a camera anti-shake system system based on a smart terminal. The invention determines the displacement amount of the intelligent terminal by monitoring the voltage output value of the acceleration sensor in each direction during the image capturing process of the intelligent terminal, and adjusts the frame rate of the intelligent terminal according to the displacement amount, thereby enabling the smart terminal to display one Clear image.

Specifically, an aspect of the present invention provides a method for camera anti-shake based on a smart terminal, which includes the steps of: capturing an operation instruction, capturing at least one target image according to the operation instruction, and monitoring performing the operation During the instruction, the displacement direction of the smart terminal and the displacement amount in the displacement direction compare the displacement amount with a displacement threshold, and when the displacement amount is greater than the displacement threshold, reduce the intelligence The frame rate of the terminal displays a clear image on the display interface of the smart terminal.

Preferably, the step of monitoring a displacement direction of the smart terminal and a displacement amount in the displacement direction during execution of the operation instruction includes monitoring an acceleration sensor x of the smart terminal during execution of the operation instruction The voltage values respectively output in the y and z directions are calculated according to the voltage values, and the displacement direction of the smart terminal and the displacement amount value in the displacement direction are obtained.

Specifically, when the displacement amount is greater than the displacement threshold, the step of reducing a frame rate of the smart terminal includes: pre-storing a displacement amount-frame rate data table in the smart terminal, when the displacement amount is greater than And calculating, by the displacement threshold, a difference between the displacement amount and the displacement threshold, and performing a search in the displacement amount-frame rate data table according to the difference, to obtain an adjustment frame corresponding to the difference Rate, according to the adjusted frame rate, reducing the frame rate of the smart terminal.

Preferably, the method further includes separately monitoring, by the smart terminal, a displacement direction during each frame image and a displacement amount in the displacement direction, and the displacement direction and the displacement amount are each The frame image is associated and cached in the smart terminal. After the smart terminal captures a complete image, the displacement amount of each frame image is compared to obtain a maximum displacement amount, and the maximum displacement amount is The displacement threshold is compared. When the maximum displacement is greater than the displacement threshold, the frame rate of the smart terminal is decreased, and a clear image is displayed on the display interface of the smart terminal.

Preferably, the step of displaying a clear image on the display interface of the smart terminal comprises: the smart terminal generating a display instruction according to the reduced frame rate, wherein the smart terminal adjusts the according to the display instruction The display rate of the smart terminal displays a clear image on the display interface of the smart terminal.

Another aspect of the present invention provides a camera-based image stabilization system based on a smart terminal, comprising: a first instruction module that captures an operation instruction, and a camera module that captures at least one target image according to the operation instruction, first a displacement monitoring module, configured to monitor a displacement direction of the smart terminal and a displacement amount in the displacement direction during execution of the operation instruction, and the first threshold module compares the displacement amount with a displacement threshold When the displacement amount is greater than the displacement threshold, a first operation instruction is generated, and is sent out, and the adjustment module is configured to reduce a frame rate of the camera of the smart terminal according to the first operation instruction, and the display module is in the smart A clear image is displayed on the display interface of the terminal.

Preferably, the first displacement monitoring module includes a monitoring unit that monitors voltage values respectively outputted by the acceleration sensors in the x, y, and z directions of the smart terminal during execution of the operation instruction, and the first data processing unit, Obtaining a displacement direction of the smart terminal according to the voltage value, and a displacement amount in the displacement direction value.

Preferably, the adjustment module includes: a second data processing unit, receiving the first operation instruction, calculating a difference between the displacement amount and the displacement threshold, and a retrieval unit, according to the difference, in the displacement The quantity-frame rate data table performs a search to obtain an adjusted frame rate corresponding to the difference, and the adjusting unit reduces the frame rate of the smart terminal according to the adjusted frame rate.

Preferably, the camera anti-shake system further includes a second displacement monitoring module that respectively monitors a displacement direction of the smart terminal during each frame image and a displacement amount in the displacement direction, a cache module, and the The displacement direction and the displacement amount are associated with the image of each frame, and are cached in the intelligent terminal, and the screening module compares the displacement amount of each frame image after the smart terminal captures a complete image. Obtaining a maximum displacement amount, the second threshold module, comparing the maximum displacement amount with a displacement threshold, and when the maximum displacement is greater than the displacement threshold, generating a second operation instruction, and adjusting the smart terminal The module receives the second operational command and reduces a frame rate of a camera of the smart terminal.

Preferably, the display module includes: an instruction unit, configured to generate a display instruction according to the frame rate, and the display unit adjusts a display rate of the smart terminal according to the display instruction, on a display interface of the smart terminal A clear image is displayed.

Compared with the prior art, the technical advantage of the present invention is that the present invention provides a camera anti-shake system based on a smart terminal, which monitors the voltage output value of the acceleration sensor in various directions during the image capturing process by the smart terminal. Determining the displacement amount of the smart terminal, adjusting the frame rate of the smart terminal according to the displacement amount, thereby enabling the smart terminal to display a clear image; and, in the case of capturing a video file, the present invention can monitor and cache each frame image. In the process, the displacement of the intelligent terminal adjusts the frame rate of the intelligent terminal according to the maximum displacement amount, thereby reducing the workload of the intelligent terminal and ensuring the clarity of the displayed video.

DRAWINGS

1 is a schematic flow chart of a method for camera anti-shake based on a smart terminal according to a preferred embodiment of the present invention;

2 is a flow chart showing a step of preferably monitoring the displacement direction of the smart terminal and the displacement amount in the displacement direction during execution of the operation command in FIG. 1;

3 is a flow chart showing a step of reducing the frame rate of the smart terminal when the displacement amount is greater than the displacement threshold in FIG. 1;

4 is a schematic flow chart showing a step of displaying a clear image on the display interface of the smart terminal in accordance with FIG. 1;

5 is a smart terminal-based camera anti-shake method in accordance with another preferred embodiment of the present invention;

6 is a structural diagram of a camera-based anti-shake system based on a smart terminal in accordance with a preferred embodiment of the present invention;

7 is a structural diagram of a camera-based anti-shake system based on a smart terminal according to another preferred embodiment of the present invention.

Detailed ways

The advantages of the present invention are explained in detail below with reference to the accompanying drawings and specific embodiments.

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with aspects of the present disclosure as detailed in the appended claims.

The terms used in the present disclosure are for the purpose of describing particular embodiments only, and are not intended to limit the disclosure. The singular forms "a", "the" and "the" It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information may also be referred to as second information without departing from the scope of the present disclosure. Similarly, the second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determination"

In the description of the present invention, it is to be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship of the indications of "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description, rather than It is to be understood that the device or elements referred to have a particular orientation, are constructed and operated in a particular orientation and are therefore not to be construed as limiting.

In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "mounted", "connected", and "connected" are to be understood broadly, and may be, for example, mechanical or electrical, or both. The internal communication of the components may be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms may be understood according to specific circumstances.

In the following description, the use of suffixes such as "module", "component" or "unit" for indicating an element is merely an explanation for facilitating the present invention, and does not have a specific meaning per se. Therefore, "module" and "component" can be used in combination.

At present, smart terminals on the market often use mechanical motion compensation, that is, the gyroscope in the lens detects a small movement, and the signal is transmitted to the microprocessor to immediately calculate the amount of displacement to be compensated, and then compensated. The lens group is compensated according to the direction of the lens's shaking and the amount of displacement, so as to effectively overcome the image blur caused by the vibration of the camera. However, on the one hand, the above method has high hardware requirements for the intelligent terminal, and improves the manufacturing cost of the intelligent terminal; on the other hand, the displacement compensation amount for the intelligent terminal is limited, and the image blur caused by the large jitter cannot be overcome.

In this regard, the present invention proposes a method of camera anti-shake based on a smart terminal. Specifically, referring to FIG. 1 , which is a schematic flowchart of a method for camera anti-shake based on a smart terminal according to a preferred embodiment of the present invention. As can be seen from the figure, in the embodiment, the provided smart camera-based camera anti-shake method mainly comprises the following steps:

- capturing an operational command;

- capturing at least one target image in accordance with the operational command;

Monitoring a displacement direction of the smart terminal and a displacement amount in the displacement direction during execution of the operation command;

- comparing the displacement amount with a displacement threshold;

- reducing a frame rate of the smart terminal when the displacement amount is greater than the displacement threshold;

- displaying a clear image on the display interface of the smart terminal.

Specifically, when the user sends an operation instruction to the smart terminal by triggering an icon on the display interface of the smart terminal or a shortcut button on the smart terminal body, the smart terminal receives the operation instruction in the embodiment. And the operation instruction is determined according to the specific content of the operation instruction, such as the current interface position, the specific position of the trigger gesture, the pressure of the trigger gesture, the direction of the trigger gesture, the speed or frequency of the trigger gesture, and the like. Describe the specific instruction content, thereby starting the camera module of the smart terminal;

The camera module of the smart terminal further captures a target image including the target object;

At the same time, the first displacement monitoring module of the smart terminal may also receive the first operation instruction, and start monitoring the displacement direction of the smart terminal while the smart terminal receives the first operation instruction, and The amount of displacement in the direction of displacement, that is, the displacement direction of the smart terminal and the amount of displacement in the direction of displacement during execution of the operation command.

Specifically, referring to FIG. 2, it is a flow diagram of a step of preferably monitoring the displacement direction of the smart terminal and the displacement amount in the displacement direction during execution of the operation instruction in FIG. As can be seen from the figure, in the embodiment, the step of monitoring the displacement direction of the smart terminal and the displacement amount in the displacement direction during the execution of the operation instruction mainly includes:

Monitoring a voltage value respectively outputted in the acceleration sensor X, Y, Z directions of the intelligent terminal during execution of the operation command;

Obtaining a displacement direction of the smart terminal and a displacement amount value in the displacement direction according to the voltage value calculation.

In the embodiment, the acceleration sensor is used to detect the displacement of the smart terminal by setting an acceleration sensor in the smart terminal.

Among them, the acceleration sensor is a sensor capable of measuring acceleration. It usually consists of mass, damper, elastic element, sensitive component and adaptive circuit. During the acceleration process, the sensor obtains the acceleration value by using Newton's second law by measuring the inertial force of the mass. Depending on the sensor's sensitive components, common accelerometers include capacitive, inductive, strain, piezoresistive, and piezoelectric.

Among them, the piezoelectric acceleration sensor is also called a piezoelectric accelerometer. It is also an inertial sensor. The principle of a piezoelectric accelerometer is to use the piezoelectric effect of a piezoelectric ceramic or a quartz crystal. When the accelerometer is vibrated, the force that the mass is applied to the piezoelectric element also changes. When the measured vibration frequency is much lower than the natural frequency of the accelerometer, the force change is proportional to the measured acceleration; based on the world's leading MEMS silicon micromachining technology, the piezoresistive accelerometer has small size and low power consumption. It is easy to integrate in various analog and digital circuits, and is widely used in automotive collision experiments, test instruments, equipment vibration monitoring, etc. Capacitive acceleration sensors are capacitance sensors based on the principle of capacitance. Capacitive accelerometers/capacitive accelerometers are relatively common accelerometers. There are no alternatives in some areas, such as airbags, mobile devices and so on. Capacitive accelerometer/capacitive accelerometer adopts micro-electromechanical system (MEMS) technology, which becomes economical in mass production, thus ensuring low cost; servo-type accelerometer is a closed-loop test system with good dynamic performance. , dynamic range and linearity are good. The working principle, the vibration system of the sensor consists of the “mk” system, which is the same as the general accelerometer, but the mass m is followed by an electromagnetic coil. When there is acceleration input on the base, the mass deviates from the equilibrium position. The displacement sensor detects and converts it into a current output after being amplified by the servo amplifier. The current flows through the electromagnetic coil to generate an electromagnetic restoring force in the magnetic field of the permanent magnet, so as to maintain the mass in the original equilibrium position in the instrument housing, so The servo acceleration sensor operates in a closed loop state.

Specifically, in this embodiment, when the smart terminal captures an operation instruction of the user, the monitoring unit in the first displacement monitoring module of the smart terminal receives the voltage respectively outputted in the x, y, and z directions of the acceleration sensor. The first data processing unit of the smart terminal can calculate the displacement direction of the smart terminal and the displacement value in the displacement direction according to the voltage value. In this embodiment, preferably, the smart terminal is placed on the desktop, the x-axis defaults to 0, the y-axis defaults to 0, and the z-axis defaults to 9.81; the smart terminal is placed face down on the desktop, and the z-axis is -9.81; The terminal is tilted to the left, the x-axis is positive; the smart terminal is tilted to the right, the x-axis is negative; the smart terminal is tilted upward, the y-axis is negative; the smart terminal is tilted downward, and the y-axis is positive.

With reference to FIG. 1 , in the embodiment, after the smart terminal obtains the displacement direction of the smart terminal and the displacement amount in the displacement direction by the first displacement monitoring module, the smart terminal a threshold module, wherein the displacement amount is compared with a displacement threshold stored in the smart terminal, and when the comparison result is When the displacement amount is greater than the displacement threshold, the first threshold module may generate a first operation instruction and send it outward.

An adjustment module of the intelligent terminal can receive the first operation instruction, and reduce a frame rate of the smart terminal according to the first operation instruction.

Specifically, FIG. 3 is a schematic flowchart of a step of lowering a frame rate of the smart terminal when the displacement amount is greater than the displacement threshold, in accordance with FIG. It can be seen from the figure that, in this embodiment, the step of reducing the frame rate of the smart terminal is mainly provided by:

Pre-storing a displacement amount-frame rate data table in the smart terminal;

Calculating a difference between the displacement amount and the displacement threshold when the displacement amount is greater than the displacement threshold;

- performing a search in the displacement amount - frame rate data table based on the difference;

Obtaining an adjusted frame rate corresponding to the difference;

- reducing the frame rate of the smart terminal according to the adjusted frame rate.

Obviously, in this embodiment, a clear-cut image is obtained by adjusting the frame rate of the smart terminal.

Among them, the frame rate is a measure for measuring the number of display frames. The so-called measurement unit is Frames per Second (FPS) or Hertz (Hz). The number of frames per second (fps) or frame rate represents the number of times the graphics processor can update every second while processing the field. High frame rates for smoother, more realistic animations. In general, 30fps is acceptable, but improving performance to 60fps can significantly improve the sense of interaction and realism, but in general, more than 75fps is generally not easy to notice a significant increase in fluency. If the frame rate exceeds the screen refresh rate, it only wastes the ability to process graphics, because the monitor cannot be updated at such a fast speed that the frame rate exceeding the refresh rate is wasted. Therefore, in this embodiment, a method for adjusting the frame rate of the smart terminal within a certain range can be used to obtain a clear image.

Specifically, in this embodiment, a displacement amount-frame rate data table is stored in the smart terminal, and the displacement amount and the frame rate data table respectively store the displacement amount and the frame under the displacement amount. Rate data. Preferably, in the embodiment, when a certain amount of displacement is generated by a certain intelligent terminal, a certain amount of frame rate data is adjusted to obtain a clear display image, and different displacement amounts and displacements thereof are obtained. The adjusted frame rate is associated one by one to form a displacement amount-frame rate data table as described. Therefore, in the embodiment, when the comparison result indicates that the displacement amount is greater than the displacement threshold, a second data processing unit of the adjustment module of the smart terminal receives the first one sent by the first threshold module. Manipulating an instruction, and calculating a difference between the displacement amount and the displacement threshold according to the first operation instruction, and transmitting the difference; thus, a retrieval unit in the adjustment module is based on the difference The retrieval is performed in the displacement amount-frame rate data table to obtain an adjusted frame rate corresponding to the difference. Further, the adjusting unit in the adjusting module may reduce the frame rate of the smart terminal according to the adjusted frame rate.

Therefore, with reference to FIG. 1 , in this embodiment, the display module of the smart terminal can be based on the frame rate. A clear image is displayed on the display interface of the smart terminal.

Specifically, referring to FIG. 4, which is a schematic flowchart of a step of displaying a clear image on the display interface of the smart terminal according to FIG. 1, as can be seen from the figure, in the embodiment, The steps of displaying a clear image on the display interface of the smart terminal mainly include:

- the smart terminal generates a display instruction according to the reduced frame rate;

The smart terminal adjusts a display rate of the smart terminal according to the display instruction;

- displaying a clear image on the display interface of the smart terminal.

Specifically, in this embodiment, the display module of the smart terminal includes an instruction unit, and the instruction unit can receive the frame rate, and generate a display instruction including the frame rate according to the frame rate; The display module further includes a display unit, the display unit receives the display instruction and parses, thereby adjusting a display rate of the smart terminal, and displaying a clear image on the display interface of the smart terminal.

In addition, the present invention also provides a method for camera anti-shake based on a smart terminal for specifically capturing a video file by using a smart terminal. Specifically, referring to FIG. 5, it is a smart terminal-based camera anti-shake method in accordance with another preferred embodiment of the present invention. It can be seen from the figure that, according to the above embodiment, the method for providing camera anti-shake in the embodiment further includes:

- separately monitoring the direction of displacement of the smart terminal during each image of the frame and the amount of displacement in the direction of displacement;

- associating the displacement direction and the displacement amount with each frame image, and buffering in the smart terminal;

- after the smart terminal captures a complete image, comparing the displacement amount of each frame image to obtain a maximum displacement amount;

- comparing the maximum displacement amount with a displacement threshold; when the maximum displacement is greater than the displacement threshold, reducing a frame rate of the intelligent terminal;

- displaying a clear image on the display interface of the smart terminal.

Specifically, in this embodiment, it is considered that the video file is composed of a multi-frame image, so that the smart terminal has a second displacement monitoring module, and the second displacement monitoring module can receive the user After the smart terminal sends an operation command and parses, respectively, the smart terminal obtains a displacement direction during the image of each frame and a displacement amount in the displacement direction;

At the same time, a buffer module is disposed in the smart terminal, and the displacement direction and the displacement amount are associated with each frame image, and are cached in the smart terminal;

After the smart terminal captures a complete image, a screening module in the smart terminal may compare each of the The amount of displacement of the frame image, and obtaining a maximum displacement amount, which is sent out;

The second threshold module of the smart terminal compares the maximum displacement amount with a displacement threshold, and when the maximum displacement is greater than the displacement threshold, the second threshold module generates a second operation instruction. Send out

The adjustment module of the smart terminal can receive the second operation instruction, and reduce the frame rate of the camera of the smart terminal according to the second operation instruction, so that the display module of the smart terminal is according to the The frame rate can display a clear image on the display interface of the smart terminal.

In summary, the present invention provides a method for anti-shake of a camera based on an intelligent terminal. By monitoring a voltage output value of an acceleration sensor in each direction of an intelligent terminal during image capturing, determining a displacement amount of the smart terminal, according to The displacement adjusts the frame rate of the smart terminal, so that the smart terminal can display a clear image; in addition, for the case of capturing a video file, the present invention can monitor and buffer the displacement of the smart terminal during each frame of image capturing, And adjusting the frame rate of the intelligent terminal according to the maximum displacement amount, on the one hand, reducing the workload of the intelligent terminal, and at the same time, ensuring the clarity of the displayed video.

Another aspect of the present invention is to provide a camera anti-shake system based on a smart terminal. FIG. 6 is a structural diagram of a camera-based anti-shake system based on a smart terminal according to a preferred embodiment of the present invention. As can be seen from the figure, the camera anti-shake system provided by the present embodiment includes:

- first instruction module

For capturing an operation instruction, specifically, when the user issues an operation instruction to the smart terminal by triggering an icon on the smart terminal display interface or a shortcut button on the smart terminal body, the smart terminal An instruction module receives the operation instruction, and according to the specific content of the operation instruction, such as the current interface position, triggering a specific position of the gesture, triggering the pressure of the gesture, triggering the direction of the gesture, triggering the speed or frequency of the gesture, etc., determining the location The specific instruction content included in the operation instruction;

- Camera module

The camera module is communicatively coupled to the first instruction module, receives the parsed operation instruction, and captures at least one target image according to the operation instruction;

-First displacement monitoring module

Means for monitoring a displacement direction of the smart terminal and a displacement amount in the displacement direction during execution of the operation instruction, that is, starting to monitor the smart terminal while receiving the first operation instruction The displacement direction of the smart terminal and the amount of displacement in the displacement direction.

Specifically, the first displacement monitoring module includes:

a monitoring unit, configured to monitor, during the execution of the operation instruction, a voltage value respectively outputted by the acceleration sensor in the x, y, and z directions of the smart terminal;

The first data processing unit calculates a displacement direction of the smart terminal and a displacement amount value in the displacement direction according to the voltage value.

- first threshold module

And comparing the displacement amount with a displacement threshold, and when the displacement amount is greater than the displacement threshold, generating a first operation instruction and transmitting the signal.

- adjustment module

And configured to reduce a frame rate of a camera of the smart terminal according to the first operation instruction.

Specifically, the adjustment module includes:

The second data processing unit receives the first operation instruction, and calculates a difference between the displacement amount and the displacement threshold;

And the searching unit performs a search in the displacement amount-frame rate data table according to the difference, to obtain an adjusted frame rate corresponding to the difference,

And an adjusting unit, configured to reduce a frame rate of the smart terminal according to the adjusted frame rate.

- display module

For displaying a clear image on the display interface of the smart terminal.

Specifically, the display module includes:

The instruction unit generates a display instruction according to the frame rate;

And a display unit, configured to adjust a display rate of the smart terminal according to the display instruction, and display a clear image on a display interface of the smart terminal.

In this embodiment, it is considered that the video file is composed of a plurality of frames of images, and thus the present invention also provides another camera anti-shake system based on the smart terminal. Referring to FIG. 7 , which is a structural diagram of a smart terminal-based camera anti-shake system according to another preferred embodiment of the present invention, it can be seen from the figure that, in this embodiment, based on the foregoing embodiment,

-Second displacement monitoring module

And a method for separately monitoring a displacement direction of the smart terminal during each frame image and a displacement amount in the displacement direction;

- Cache module

And configured to associate the displacement direction and the displacement amount with each frame image, and cache the same in the smart terminal;

- screening module

And after the smart terminal captures a complete image, comparing the displacement amount of each frame image to obtain a maximum displacement amount;

- second threshold module

And comparing, by the maximum displacement amount, a displacement threshold, when the maximum displacement is greater than the displacement threshold, generating a second operation instruction, so that the adjustment module of the smart terminal receives the second operation instruction And reducing the frame rate of the camera of the smart terminal.

In summary, the present invention provides a camera anti-shake system based on a smart terminal, which determines the displacement amount of the smart terminal by monitoring the voltage output value of the acceleration sensor in each direction during image capturing by the smart terminal, according to the The displacement amount adjusts the frame rate of the intelligent terminal, thereby enabling the smart terminal to display a clear image; in addition, for the case of capturing a video file, the present invention can monitor and buffer the displacement of the smart terminal during each frame of image capturing, and Adjusting the frame rate of the smart terminal according to the maximum displacement amount reduces the workload of the smart terminal on the one hand, and ensures the clarity of the displayed video at the same time.

It should be noted that the embodiments of the present invention are preferred embodiments, and are not intended to limit the scope of the present invention. Any one skilled in the art may use the above-disclosed technical contents to change or modify the equivalent embodiments. Any modification or equivalent changes and modifications of the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the technical solutions of the present invention.

Claims

A method for camera anti-shake based on a smart terminal, comprising the steps of:

Capture an operation command,

Capturing at least one target image according to the operation instruction,

Monitoring a displacement direction of the smart terminal and a displacement amount in the displacement direction during execution of the operation instruction,

Comparing the amount of displacement with a displacement threshold,

When the displacement amount is greater than the displacement threshold, reducing a frame rate of the smart terminal,

A clear image is displayed on the display interface of the smart terminal.
The method of claim 1 wherein

Monitoring the step of the displacement direction of the smart terminal and the amount of displacement in the displacement direction during execution of the operation instruction, including,

Monitoring, during the execution of the operation instruction, a voltage value respectively outputted by the acceleration sensor in the x, y, and z directions of the smart terminal,

Obtaining a displacement direction of the smart terminal and a displacement amount value in the displacement direction according to the voltage value calculation.
The method of claim 1 wherein

When the amount of displacement is greater than the displacement threshold, the step of reducing the frame rate of the smart terminal includes,

Pre-storing a displacement amount-frame rate data table in the smart terminal,

Calculating a difference between the displacement amount and the displacement threshold when the displacement amount is greater than the displacement threshold

Searching in the displacement amount-frame rate data table according to the difference,

Obtaining an adjusted frame rate corresponding to the difference,

And reducing the frame rate of the smart terminal according to the adjusted frame rate.
The method of claim 1 wherein

Also includes,

Monitoring, respectively, the direction of displacement of the smart terminal during each image of the frame and the amount of displacement in the direction of the displacement,

And associating the displacement direction and the displacement amount with each frame image, and buffering in the smart terminal,

After the smart terminal captures a complete image, comparing the displacement amount of each frame image to obtain a maximum displacement amount,

Comparing the maximum displacement amount with a displacement threshold,

Decrease the frame rate of the smart terminal when the maximum displacement is greater than the displacement threshold,

A clear image is displayed on the display interface of the smart terminal.
The method of claim 1 wherein

The step of displaying a clear image on the display interface of the smart terminal includes,

The smart terminal generates a display instruction according to the reduced frame rate.

The smart terminal adjusts a display rate of the smart terminal according to the display instruction, and displays a clear image on a display interface of the smart terminal.
A camera anti-shake system based on a smart terminal, comprising the following modules,

a first instruction module that captures an operation instruction,

a camera module that captures at least one target image according to the operation instruction,

a first displacement monitoring module that monitors a displacement direction of the smart terminal and a displacement amount in the displacement direction during execution of the operation instruction,

The first threshold module compares the displacement amount with a displacement threshold, and when the displacement amount is greater than the displacement threshold, generates a first operation instruction and sends the first operation instruction.

An adjustment module, according to the first operation instruction, reducing a frame rate of a camera of the smart terminal,

The display module displays a clear image on the display interface of the smart terminal.
The camera anti-shake system of claim 6 wherein:

The first displacement monitoring module includes

a monitoring unit, configured to monitor, during the execution of the operation instruction, a voltage value respectively outputted by the acceleration sensor in the x, y, and z directions of the smart terminal,

The first data processing unit calculates a displacement direction of the smart terminal and a displacement amount value in the displacement direction according to the voltage value.
The camera anti-shake system of claim 6 wherein:

The adjustment module includes

The second data processing unit receives the first operation instruction, calculates a difference between the displacement amount and the displacement threshold, and the retrieval unit performs retrieval in the displacement amount-frame rate data table according to the difference value Obtaining an adjusted frame rate corresponding to the difference,

And an adjusting unit, configured to reduce a frame rate of the smart terminal according to the adjusted frame rate.
The camera anti-shake system of claim 6 wherein:

Also includes,

a second displacement monitoring module respectively monitoring a displacement direction of the smart terminal during each frame image and a displacement amount in the displacement direction,

Cache the module, and associate the displacement direction and the displacement amount with each frame image, and cache the same in the smart terminal.

a screening module, after the smart terminal captures a complete image, comparing the displacement amount of each frame image to obtain a maximum displacement amount,

a second threshold module, the maximum displacement amount is compared with a displacement threshold, and when the maximum displacement is greater than the displacement threshold, a second operation instruction is generated,

The adjustment module of the smart terminal receives the second operation instruction and reduces a frame rate of a camera of the smart terminal.
The camera anti-shake system of claim 6 wherein:

The display module includes

An instruction unit generates a display instruction according to the frame rate,

And a display unit, configured to adjust a display rate of the smart terminal according to the display instruction, and display a clear image on a display interface of the smart terminal.