Device and method for shortening time for quickly starting camera to capture pictures

Abstract

The invention discloses a device and method for shortening the time for quickly starting a camera to capture pictures, and relates to the technical field of image acquisition, and the device comprises an image acquisition module which is used for acquiring image data; the power supply module is electrically connected with the light sensing module, the image acquisition module, the storage module and the power management module and supplies power to the modules; the power management module is electrically connected with the light sensing module, the image acquisition module and the storage module, and is used for power connection and power-off low-power-consumption dormancy of each module; the light sensing module is used for sensing ambient light and assisting the image acquisition module to quickly complete image effect adjustment and convergence; the storage module is used for storing key image parameters in the image acquisition module; and when restarting after dormancy, the image acquisition module directly loads the key image parameters in the storage module to initialize the image acquisition module, and acquires a plurality of frames of images to complete image noise reduction and further adjustment of the image effect.

Description

Technical Field

[0001] The present invention relates to the technical field of image acquisition, and in particular to a device and method for shortening the time for a camera to quickly start capturing pictures. Background Art

[0002] In a non-specific light source environment, when the camera is started, it will continuously collect images and analyze information such as brightness and color, and continuously adjust the camera's exposure, gain, white balance and other parameters until the image effect is adjusted to the best state suitable for the human eye or machine vision algorithm. Some cameras will also give the camera an environmental brightness data in advance by increasing the light sensitivity, which is used to configure an initialization value closer to the actual environment when the camera is started, accelerating the convergence of camera parameter adjustments. However, for cameras that need to start quickly, the image adjustment convergence process in the current technical solution is relatively slow, and usually dozens of frames of image data are required to obtain a stable image effect, which is not conducive to realizing the need for fast camera startup and image output. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies in the above-mentioned background technology and to provide a device and method for shortening the time of quickly starting a camera to capture a picture.

[0004] A device for shortening the time of quickly starting a camera to capture pictures, comprising: a light sensing module, an image acquisition module, a storage module, a power management module and a power supply module. The image acquisition module is used to acquire image data; The power supply module is electrically connected to the light sensing module, the image acquisition module, the storage module, and the power management module to provide them with electrical energy; The power management module is electrically connected to the light sensing module, the image acquisition module, and the storage module, and is used for powering on and off each module and for low-power sleep; The light sensing module is used to sense ambient light and assist the image acquisition module to quickly complete image effect adjustment and convergence; The storage module is used to save the key image parameters in the image acquisition module; When restarting after hibernation, the image acquisition module directly loads the key image parameters in the storage module to initialize the image acquisition module, and acquires several frames of images to complete image noise reduction and further adjust the image effect.

[0005] A method for shortening the time it takes to quickly start a camera to capture a picture comprises the following steps: When the camera is started for the first time, the light sensing module assists the image acquisition module to complete the image adjustment, convergence and stabilization process. After the image is stable, the capture is completed, and the storage module records and saves the image configuration information; After the capture is completed, the power management module controls the light sensing module, the image acquisition module and the storage module to cut off the power; When the machine is turned on next time, the image acquisition module directly reads the image configuration information saved last time in the storage module to complete image initialization, and at the same time acquires several frames of images to complete image noise reduction and further adjust the image effect.

[0006] Beneficial effects of the present invention: This solution is mainly used in scenarios where the camera needs to be started / shut down frequently; This solution enables the camera to quickly output images, allowing the camera to respond faster to trigger start / timed start events, and the real-time performance of camera startup is better; Shortening the time it takes for the camera to start up and output images will help reduce the camera's operating time and significantly reduce camera power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the present invention. DETAILED DESCRIPTION

[0008] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0009] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0010] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0011] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0012] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0013] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0014] Referring to the attached drawings, a device for shortening the time of quickly starting a camera to capture pictures comprises: a light sensing module, an image acquisition module, a storage module, a power management module and a power supply module. The image acquisition module is used to acquire image data; The power supply module is electrically connected to the light sensing module, the image acquisition module, the storage module, and the power management module to provide them with electrical energy; The power management module is electrically connected to the light sensing module, the image acquisition module, and the storage module, and is used for powering on and off each module and for low-power sleep; The light sensing module is used to sense ambient light and assist the image acquisition module to quickly complete image effect adjustment and convergence; The storage module is used to save the key image parameters in the image acquisition module; When restarting after hibernation, the image acquisition module directly loads the key image parameters in the storage module to initialize the image acquisition module, and acquires several frames of images to complete image noise reduction and further adjust the image effect.

[0015] Furthermore, the key image parameters include exposure time, gain, and white balance.

[0016] The method for shortening the time of quickly starting a camera to capture a picture comprises the following steps: When the camera is started for the first time, the light sensing module assists the image acquisition module to complete the image adjustment, convergence and stabilization process. After the image is stable, the capture is completed, and the storage module records and saves the image configuration information; After the capture is completed, the power management module controls the light sensing module, the image acquisition module and the storage module to cut off the power; When the machine is turned on next time, the image acquisition module directly reads the image configuration information saved last time in the storage module to complete image initialization, and at the same time acquires several frames of images to complete image noise reduction and further adjust the image effect.

[0017] Furthermore, if the quality of the image captured by the image acquisition module drops significantly due to a significant change in the light of the shooting scene, after the image acquisition module quickly starts to output the image, the image acquisition module determines the convergence of the current image quality adjustment. If the expected convergence effect is not achieved, it is necessary to wait until the image acquisition module completely converges on the image quality adjustment before outputting the image. At the same time, the storage module saves the updated key image configuration information.

[0018] Working principle of the present invention: The present invention can allow the camera (image acquisition module) to complete the optimal picture effect adjustment convergence process in the shortest time, and complete the image noise reduction and image effect enhancement operation as needed. Usually, only 3-4 frames of images are needed to complete the camera's optimal image output. When these frames of images are acquired, the image acquisition module will continue to adjust the image and continuously optimize the effect. After completing the quick start image output, the storage module will record and save the key image configuration information for the next quick start image output.

Claims

1. A device for shortening the time of quickly starting a camera to capture a picture, characterized in that: include: Light sensing module, image acquisition module, storage module, power management module and power supply module, The image acquisition module is used to acquire image data; The power supply module is electrically connected to the light sensing module, the image acquisition module, the storage module, and the power management module to provide them with electrical energy; The power management module is electrically connected to the light sensing module, the image acquisition module, and the storage module, and is used for powering on and off each module and for low-power sleep; The light sensing module is used to sense ambient light and assist the image acquisition module to quickly complete image effect adjustment and convergence; The storage module is used to save the key image parameters in the image acquisition module; When restarting after hibernation, the image acquisition module directly loads the key image parameters in the storage module to initialize the image acquisition module, and acquires several frames of images to complete image noise reduction and further adjust the image effect.

2. The device for shortening the time of quickly starting a camera to capture a picture according to claim 1, characterized in that: The key image parameters include exposure time, gain, and white balance.

3. A method for shortening the time of quickly starting a camera to capture a picture, characterized in that: The steps include: When the camera is started for the first time, the light sensing module assists the image acquisition module to complete the image adjustment, convergence and stabilization process. After the image is stable, the capture is completed, and the storage module records and saves the image configuration information; After the capture is completed, the power management module controls the light sensing module, the image acquisition module and the storage module to power off; When the machine is turned on next time, the image acquisition module directly reads the image configuration information saved last time in the storage module to complete image initialization, and at the same time acquires several frames of images to complete image noise reduction and further adjust the image effect.

4. A method for shortening the time of quickly starting a camera to capture a picture according to claim 3, characterized in that: If the quality of the image captured by the image acquisition module drops significantly due to a significant change in the light of the shooting scene, after the image acquisition module quickly starts to output the image, the image acquisition module determines the convergence of the current image quality adjustment. If the expected convergence effect is not achieved, it is necessary to wait until the image acquisition module completely converges on the image quality adjustment before outputting the image. At the same time, the storage module saves the updated key image configuration information.

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