WO2022262449A1 - 图像数据处理方法、多媒体处理芯片以及电子设备 - Google Patents

图像数据处理方法、多媒体处理芯片以及电子设备 Download PDF

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Publication number
WO2022262449A1
WO2022262449A1 PCT/CN2022/090629 CN2022090629W WO2022262449A1 WO 2022262449 A1 WO2022262449 A1 WO 2022262449A1 CN 2022090629 W CN2022090629 W CN 2022090629W WO 2022262449 A1 WO2022262449 A1 WO 2022262449A1
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data
image data
processing chip
original image
time point
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PCT/CN2022/090629
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English (en)
French (fr)
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杨平平
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哲库科技(上海)有限公司
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  • the present application relates to the technical field of electronic equipment, in particular to an image data processing method, a multimedia processing chip and electronic equipment.
  • the quality of shooting has become the key to measure the performance of electronic equipment such as smart phones and tablet computers.
  • the sensor data collected by the sensor of the electronic device is used to process the image to improve the quality of the captured image or video.
  • Embodiments of the present application provide an image data processing method, a multimedia processing chip, and an electronic device, which can improve image effects.
  • the embodiment of the present application provides an image data processing method, which is applied to a multimedia processing chip, and the method includes:
  • the embodiment of the present application also provides a multimedia processing chip, including:
  • the central processing unit is configured to receive the optical anti-shake data sequence and the first system time stamp corresponding to the optical anti-shake data sequence from the application processing chip;
  • the embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is run on the computer, the computer is made to execute the computer program as provided in any embodiment of the present application.
  • Image data processing method
  • the embodiment of the present application further provides an electronic device, the electronic device includes the multimedia processing chip, the image sensor, the optical anti-shake component and the application processing chip provided in any embodiment of the application, wherein the application processing chip Including sensor control module;
  • the image sensor is configured to collect raw image data and transmit the raw image data to the multimedia processing chip;
  • the optical anti-shake component is configured to generate an optical anti-shake data sequence according to the motion data sequence of the electronic device during the shooting process of the raw image data, and transmit the optical anti-shake data sequence to the sensor control modules;
  • the sensor control module is configured to provide the optical image stabilization data sequence to the multimedia processing chip.
  • FIG. 1 is a schematic flowchart of a first type of image data processing method provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of matching optical image stabilization data and original image data in the image data processing method provided by the embodiment of the present application.
  • FIG. 3 is a schematic diagram of a first structure of a multimedia processing chip provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a second structure of a multimedia processing chip provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a first structure of an electronic device provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a second structure of an electronic device provided by an embodiment of the present application.
  • the embodiment of the present application provides a Chinese image data processing method, including:
  • recording the life cycle of the original image data includes:
  • the time interval between the first exposure start time point and the second exposure start time point is recorded as the life cycle of the original image data.
  • determining the target optical image stabilization data corresponding to the original image data from the optical image stabilization data sequence according to the life cycle and the first system time stamp further includes:
  • the first system time stamp determine the adjusted optical anti-shake data frame between the first exposure start time point and the second exposure start time point from the optical anti-shake data sequence, As the target optical image stabilization data.
  • providing the target optical image stabilization data and the original image data to the application processing chip includes:
  • the target optical image stabilization data, the motion estimation data and the original image data are transmitted to the application processing chip.
  • providing the target optical image stabilization data and the original image data to the application processing chip includes:
  • the pre-processing includes de-noising processing and/or de-ghosting processing.
  • the optical image stabilization data includes a check digit
  • the method further includes: before calculating the motion estimation data corresponding to the original image data according to the target optical image stabilization data, performing:
  • the motion estimation data corresponding to the original image data is calculated according to the target optical image stabilization data.
  • the embodiment of the present application provides an image data processing method.
  • the execution subject of the image data processing method may be the multimedia processing chip provided in the embodiment of the present application, or an electronic device integrated with the multimedia processing chip, wherein the multimedia processing chip may adopt implemented in hardware or software.
  • the electronic device may be a device such as a smart phone, a tablet computer, a palmtop computer, a notebook computer, or a desktop computer.
  • FIG. 1 is a schematic flowchart of a first image data processing method provided by an embodiment of the present application.
  • the specific flow of the image data processing method provided in the embodiment of the present application may be as follows:
  • the electronic device in the embodiment of the present application may include an image sensor, a multimedia processing chip, and an application processing chip. After the image sensor completes the exposure, it will transmit the captured original image data to the multimedia processing chip, or the multimedia processing chip will transfer the data from the image sensor to the multimedia processing chip. Read the raw image data obtained by exposure.
  • the multimedia processing chip can perform some pre-processing on the original image data received from the image sensor to obtain the pre-processing image data, and then transmit the pre-processing image data to the application processing chip, and the application processing chip performs post-processing on the pre-processing image data processing to obtain post-processing image data, and output the post-processing image data, for example, perform image shooting preview, image shooting output, video shooting preview or video shooting output based on the post-processing image data.
  • the electronic equipment also includes an optical anti-shake component, which generally belongs to the camera module together with the image sensor and the lens, and the optical anti-shake component and the image sensor work synchronously.
  • the optical anti-shake The component calculates the optical anti-shake data according to the motion data detected by the motion sensor of the electronic device, and controls the movement and/or rotation of the lens to realize the optical anti-shake processing. Therefore, the original image data transmitted by the image sensor to the multimedia processing chip is processed by optical anti-shake.
  • the above motion sensor includes but not limited to any one or more of the following multiple sensors: gyroscope, acceleration sensor, gravity sensor and so on.
  • the motion sensor Take the motion sensor as a gyroscope (Gyroscope, referred to as GYRO) as an example.
  • the gyroscope outputs gyroscope data at a constant frequency.
  • the motion of the electronic device can be obtained.
  • the component Based on the gyroscope data, the component detects that the electronic device shakes during shooting, and then corrects the offset of the shake by controlling the movement or rotation of the lens, thereby achieving optical image stabilization.
  • the gyroscope outputs gyroscope data according to a constant frequency to form a gyroscope data sequence
  • the optical anti-shake component converts the optical anti-shake data sequence according to the same frequency to obtain the optical anti-shake data sequence.
  • Each frame of optical image stabilization data includes displacement compensation information and/or rotational displacement information.
  • the optical image stabilization data can also be transmitted to the multimedia processing chip, and the multimedia processing chip can use the optical image stabilization data for motion estimation, and the obtained motion estimation data can be used to process the original image data .
  • optical image stabilization data can be used to process the image.
  • Camera HAL restores and corrects the pose of the original image data according to the optical image stabilization data to obtain a corrected image, and then performs electronic anti-shake processing on the corrected image.
  • the electronic device also includes an application processing chip
  • the application processing chip includes a sensor control module (SENSOR HUB)
  • the optical image stabilization component is connected to the sensor control module, and needs to send the optical image stabilization data to the sensor control module
  • the sensor control module sends it to other hardware that needs to use the optical image stabilization data, for example, the sensor control module sends the optical image stabilization data to the multimedia processing chip and the application processing chip.
  • the number of peripheral interfaces of the sensor control module is generally limited, so in the embodiment of the present application, the sensor control module is configured to send the optical image stabilization data sequence to the application processing chip and the multimedia processing chip in a time-sharing manner. In the case of expansion, the requirements of the two hardware for optical image stabilization data are guaranteed.
  • the image sensor transmits the raw image data obtained by exposure to the multimedia processing chip.
  • the sensor control module in the application processing chip also transmits the optical image stabilization data sequence to the multimedia processing chip, and the sensor
  • Each frame of optical image stabilization data in the optical image stabilization data sequence transmitted by the control module carries a corresponding first system time stamp.
  • the time stamps of the sensor control module and the application processing chip are synchronized, or have undergone synchronization processing in advance. Therefore, when the sensor control module transmits the optical image stabilization data to the multimedia processing chip, it can carry the system time stamp of the sensor control module.
  • the image sensor will continuously send multiple frames of raw image data exposed according to certain exposure parameters to the multimedia processing chip, and the multimedia processing chip will record the life cycle of a frame of raw image data according to the time point when the raw image data is received.
  • the life cycle of recording raw image data includes:
  • the time interval between the first exposure start time point and the second exposure start time point is recorded as the life cycle of the original image data.
  • FIG. 2 is a schematic diagram of matching optical image stabilization data and original image data in the image data processing method provided by the embodiment of the present application.
  • the multimedia processing chip records the time interval between the exposure start time point of the original image data and the exposure start time point of the next frame of image data of the original image data as the life cycle of the original image data.
  • the image sensor, the multimedia processing chip and the application processing chip are all provided with a communication module, for example, the communication module is a MIPI (Mobile Industry Processor Interface, mobile industry processor interface) module.
  • the MIPI module of the multimedia processing chip can include a first interface and a second interface, the first interface can receive the original image data transmitted by the MIPI interface of the image sensor, and the second interface can send the pre-processed image data obtained by processing to the application processing The MIPI interface of the chip.
  • MIPI Mobile Industry Processor Interface, mobile industry processor interface
  • the multimedia processing chip and the sensor control module are provided with a peripheral interface
  • the peripheral interface is an I2C (Inter-Integrated Circuit, two-wire serial bus) interface or an SPI (Serial Peripheral Interface, serial peripheral interface ) interface
  • the multimedia processing chip receives the optical image stabilization data sent by the SPI/I2C interface of the sensor control module through the SPI/I2C interface.
  • the multimedia processing chip After receiving the OIS data sequence and the original image data, the multimedia processing chip determines the target OIS data corresponding to the original image data from the OIS data sequence.
  • the method further includes: before receiving the optical image stabilization data sequence and the first system timestamp corresponding to the optical image stabilization data sequence, executing:
  • the multimedia processing chip and the application processing chip in the embodiment of the present application may use the same source clock.
  • the electronic device since the electronic device is started, its application processing chip will generally be started, and the multimedia processing chip will generally be started when the camera is started to shoot, so as to process the image data obtained by shooting. Therefore, even if the two If two chips use the same source clock, there will be a time difference between their time stamps. Therefore, after the multimedia processing chip is started, the time stamps of the two chips are synchronized.
  • receive the second system time stamp sent by the application processing chip acquire the third system time stamp of the multimedia processing chip; record the synchronization relationship between the second system time stamp and the third system time stamp.
  • determining the target optical image stabilization data corresponding to the original image data from the optical image stabilization data sequence according to the life cycle and the first system time stamp further includes: adjusting the life cycle according to the synchronization relationship Corresponding to the first exposure start time point and the second exposure start time point; according to the first system time stamp, determine the adjusted first exposure start time point to the second exposure start time point from the optical image stabilization data sequence
  • the optical image stabilization data frame between points is used as the target optical image stabilization data.
  • the first exposure start time point and the second exposure start time point corresponding to the life cycle are adjusted according to the synchronization relationship; then, according to the first system time stamp, determine the adjusted optical image stabilization data frame between the first exposure start time point and the second exposure start time point from the optical image stabilization data sequence as the target optical image stabilization data.
  • the multimedia processing chip After the multimedia processing chip acquires the target optical image stabilization data, it provides the target optical image stabilization data and original image data to the application processing chip.
  • the multimedia processing chip can actively transmit the target optical image stabilization data and original image data to the application processing chip. chip, or when the application processing chip requests the original image data from the multimedia processing chip, it transmits the target optical image stabilization data and the original image data to the application processing chip, so that the application processing chip can use the target optical image stabilization data to update the original image data.
  • the image data is post-processed.
  • the target optical image stabilization data and original image data are provided to the application processing chip, including:
  • the motion estimation data including offset data and rotation data
  • the target optical image stabilization data, motion estimation data and original image data are transmitted to the application processing chip.
  • the multimedia processing chip After the multimedia processing chip obtains the target optical image stabilization data, it calculates the motion estimation data corresponding to the original image data according to the target optical image stabilization data.
  • the motion estimation data includes offset data and rotation data, representing the original image data Offset and rotation during exposure due to optical image stabilization. Then, the multimedia processing chip transmits the target optical image stabilization data, motion estimation data and original image data to the application processing chip.
  • providing the target optical anti-shake data and the original image data to the application processing chip includes: calculating motion estimation data corresponding to the original image data according to the target optical anti-shake data; Perform pre-processing to obtain pre-processed image data; transmit the pre-processed data to the application processing chip.
  • the multimedia processing chip after the multimedia processing chip calculates and obtains the motion estimation data, it can further perform pre-processing on the original image data according to the motion estimation data, for example, perform denoising processing and/or de-ghosting processing to obtain the pre-processing Image data, and then the pre-processed image data is sent to the application processing chip, or the pre-processed image data, motion estimation data, and target optical image stabilization data can also be sent to the application processing chip through the MIPI interface.
  • the application processing chip can further post-process the pre-processed image data.
  • the optical image stabilization data includes a check digit
  • the method further includes: before calculating the motion estimation data corresponding to the original image data according to the target optical image stabilization data, performing: The check bit in the optical image stabilization data is used to verify the target optical image stabilization data; if the verification is successful, the motion estimation data corresponding to the original image data is calculated according to the target optical image stabilization data.
  • the sensor control module adds a check bit for each frame of optical image stabilization data, and when the multimedia processing chip or application processing chip uses the target optical image stabilization data, it can first judge the optical image stabilization data according to the check bit.
  • the accuracy of the anti-shake data is to ensure that the optical anti-shake data is transmitted to the multimedia processing chip without error. It can be understood that, if an error in transmission of optical jitter data is detected according to the check digit, the time stamp corresponding to the erroneous optical image stabilization data frame can be determined, and based on the time stamp, a corresponding optical image stabilization data frame can be requested from the sensor control module again. Jitter data frame.
  • the present application is not limited by the execution order of the described steps, and some steps may be performed in other orders or simultaneously in the case of no conflict.
  • the multimedia processing chip receives the original image data from the image sensor, and records the life cycle of the original image data. At the same time, the multimedia processing chip also receives the optical data from the application processing chip.
  • the anti-shake data sequence and the first system time stamp corresponding to the optical anti-shake data sequence determine the target optical anti-shake data corresponding to the original image data from the optical anti-shake data sequence according to the life cycle and the first system time stamp, Realize the synchronization of original image data and optical image stabilization data in time, so that the multimedia processing chip that directly receives the original image data can quickly process the original image data and optical image stabilization data simultaneously, and send the data to the application for processing
  • the chip can realize the synchronization of the two kinds of data before the chip, and send the target optical image stabilization data and original image data obtained by matching processing to the application processing chip, so that the application processing chip can directly obtain the target optical image stabilization data after synchronization processing
  • the original image data without data synchronization processing, the original image data can be processed directly according to the target optical image stabilization data, which not only improves the processing efficiency of image data, but also avoids data delay, thereby improving the image processing effect.
  • the embodiment of the present application also provides a multimedia processing chip, including a central processing unit, and the central processing unit is configured to:
  • the central processing unit is further configured to:
  • the time interval between the first exposure start time point and the second exposure start time point is recorded as the life cycle of the original image data.
  • the central processing unit is further configured to:
  • the central processing unit is further configured to:
  • the first system time stamp determine the adjusted optical anti-shake data frame between the first exposure start time point and the second exposure start time point from the optical anti-shake data sequence, As the target optical image stabilization data.
  • the central processing unit is further configured to:
  • a pre-image processor is also included, configured to:
  • the central processing unit is further configured to:
  • the target optical image stabilization data, the motion estimation data and the original image data are transmitted to the application processing chip.
  • the optical image stabilization data includes a check digit
  • the central processing unit is further configured to:
  • the motion estimation data corresponding to the original image data is calculated according to the target optical image stabilization data.
  • FIG. 3 is a schematic diagram of a first structure of a multimedia processing chip provided by an embodiment of the present application.
  • the multimedia processing chip 300 is applied to an electronic device 300
  • the multimedia processing chip 301 includes a central processing unit 3011
  • the central processing unit 3011 is configured to:
  • the central processing unit 3011 is configured to:
  • the time interval between the first exposure start time point and the second exposure start time point is recorded as the life cycle of the original image data.
  • the central processing unit 3011 is configured to:
  • the central processing unit 3011 is configured to:
  • the first system time stamp determine the adjusted optical anti-shake data frame between the first exposure start time point and the second exposure start time point from the optical anti-shake data sequence, As the target optical image stabilization data.
  • the central processing unit 3011 is configured to:
  • the motion estimation data including offset data and rotation data
  • the target optical image stabilization data, the motion estimation data and the original image data are transmitted to an application processing chip.
  • FIG. 4 is a schematic diagram of a second structure of a multimedia processing chip provided by an embodiment of the present application.
  • the multimedia processing chip 301 also includes a front image processor 3012, and the front image processor 3012 is configured to:
  • the pre-processing data is transmitted to the application processing chip.
  • the pre-processing includes de-noising processing and/or de-ghosting processing.
  • the optical image stabilization data includes a check digit; the central processing unit 3011 is configured to:
  • the motion estimation data corresponding to the original image data is calculated according to the target optical image stabilization data.
  • the multimedia processing chip provided in the embodiment of the present application belongs to the same idea as the image data processing method in the above embodiment, and any method provided in the image data processing method embodiment can be implemented through the multimedia processing chip, and its For the specific implementation process, refer to the embodiment of the image data processing method for details, which will not be repeated here.
  • the multimedia processing chip proposed in the embodiment of the present application receives the original image data from the image sensor through the central processing unit 3011, and records the life cycle of the original image data.
  • the optical anti-shake data sequence and the first system time stamp corresponding to the optical anti-shake data sequence then, according to the life cycle and the first system time stamp, determine the target optical anti-shake corresponding to the original image data from the optical anti-shake data sequence Shake data, realize the time synchronization of original image data and optical anti-shake data, so that the multimedia processing chip that directly receives the original image data can quickly process the original image data and optical anti-shake data received at the same time.
  • the synchronization of the two data can be realized, and the target optical image stabilization data and original image data obtained by matching processing are sent to the application processing chip, so that the application processing chip can directly obtain the target optical image stabilization data after synchronization processing.
  • the anti-shake data and original image data can be processed directly according to the target optical anti-shake data without data synchronization processing, which not only improves the image data processing efficiency, but also avoids data delay, thereby improving image processing Effect.
  • FIG. 5 is a schematic diagram of a first structure of an electronic device provided in an embodiment of the present application.
  • the electronic device 300 includes a multimedia processing chip 301, an application processing chip 302, an image sensor 303, and an optical image stabilization component 304 proposed in any of the above embodiments, wherein the application processing chip 302 includes a sensor control module 3021;
  • the image sensor 303 is configured to: collect original image data, and transmit the original image data to the multimedia processing chip 301;
  • the optical anti-shake component 304 is configured to: during the shooting process of the raw image data, generate an optical anti-shake data sequence according to the motion data sequence of the electronic device, and transmit the optical anti-shake data sequence to the sensor control module 3021 ;as well as
  • the sensor control module 3021 is configured to: provide the optical image stabilization data sequence to the multimedia processing chip 301 .
  • the multimedia processing chip 301 and the application processing chip 302 are connected through an interconnection bus, such as a PCIE (peripheral component interconnect express) bus, and the PCIE bus has the characteristics of point-to-point dual-channel high-bandwidth transmission.
  • the multimedia processing chip 301 can also be connected to the application processing chip 302 through a MIPI (Mobile Industry Processor Interface, mobile industry processor interface) line.
  • the multimedia processing chip 301 can also be connected according to the SPI (Serial Peripheral Interface, Serial Peripheral Interface) bus.
  • the communication principle of SPI usually has a master device and a plurality of slave devices, that is, the master device can be the application processing chip 302, and the slave device can be It is a multimedia processing chip 301 .
  • the message between the application processing chip 302 and the multimedia processing chip 301 can be triggered in the form of a general-purpose input/output (GPIO, General-purpose input/output) interrupt.
  • GPIO General-purpose input/output
  • the multimedia processing chip 301 in the embodiment of the present application may preprocess the image first, and transmit the preprocessing result to the ISP of the platform side (that is, the application processing chip 302 ).
  • the ISP at the platform side takes the processing result of the multimedia processing chip 301 as input data and performs further processing. Thereby, image quality can be improved.
  • the multimedia processing chip 301 of the embodiment of the present application can process the acquired original image data, such as RAW image, so that other image processors can further process the image data to improve the image quality.
  • the multimedia processing chip 301 can process still image data, such as the still image data acquired by the user in the camera mode.
  • the multimedia processing chip 301 can also process dynamic image data, such as the dynamic image data acquired by the user in preview mode or video recording mode.
  • both the static image data and the dynamic image data can be processed by a processor on the platform side (System-on-a-Chip, SoC chip).
  • the platform side can also be understood as an application processing chip, and the processor on the platform side can be understood as an image signal processor (Image Signal Processing, ISP) and an application processor (AP, Application Processor).
  • ISP Image Signal Processing
  • AP Application Processor
  • the platform side often has limited processing capabilities for image data. As users have higher and higher requirements for image quality, only processing image data through the platform often cannot meet user needs.
  • the image processor of the multimedia processing chip 301 in the embodiment of the present application performs pre-processing on the image first, and transmits the result of the pre-processing to the platform side.
  • the platform side takes the pre-processing results as input data and performs post-processing. Thereby, image quality can be improved.
  • the multimedia processing chip 301 receives the original image data sent by the image sensor 303, and records the life cycle of the original image data. At the same time, the multimedia processing chip 301 also receives the sensor control module of the application processing chip 302 The optical anti-shake data sequence sent in 3021 and the first system time stamp corresponding to the optical anti-shake data sequence; then, according to the life cycle and the first system time stamp, determine the The target optical image stabilization data, and send the target optical image stabilization data and the original image number to the application processing chip 302 .
  • FIG. 6 is a second structural schematic diagram of an electronic device provided by an embodiment of the present application.
  • the electronic device 300 includes a multimedia processing chip 301 and an application processing chip 302 , an image sensor 303 , an optical image stabilization component 304 , a power supply 305 , an input unit 306 and a display unit 307 .
  • the multimedia processing chip 301 includes a central processing unit 3011 , a front image processor 3012 and a first memory 3013 ;
  • the application processing chip 302 includes a sensor control module 3021 , an application processor 3022 and a second memory 3023 .
  • FIG. 6 does not constitute a limitation on the electronic device, and may include more or less components than shown in the figure, or combine some components, or arrange different components.
  • the multimedia processing chip 301 includes a central processing unit 3011, a first memory 3013 and a front image processor 3012, specifically as follows:
  • the central processing unit 3011 is configured to: receive the original image data from the image sensor, and record the life cycle of the original image data; receive the optical image stabilization data sequence and the first system time corresponding to the optical image stabilization data sequence from the application processing chip stamp; according to the life cycle and the first system time stamp, determine the target optical anti-shake data corresponding to the original image data from the optical anti-shake data sequence; and provide the application processing chip with the The target optical image stabilization data and the original image data 302.
  • the image sensor 303 of the electronic device performs exposure and outputs original image data.
  • the multimedia processing chip 301 receives the original image data output by the image sensor 303 through the MIPI interface, and stores the original image data in the first memory 3013 . Wherein, the multimedia processing chip 301 records the time interval between the exposure start time point of the original image data and the exposure start time point of the next frame of image data of the original image data as the life cycle of the original image data.
  • the pre-image processor 3012 is configured to: perform pre-processing on the original image data to obtain pre-processed image data.
  • the multimedia processing chip can acquire the stored original image data from the first memory, perform preprocessing on the original image data, and obtain preprocessed image data.
  • the central processing unit 3011 is configured to: send the pre-processed image data and the target optical image stabilization data to an application processing chip.
  • the sensors of the electronic device 300 may include gyroscopes, light sensors, motion sensors and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel according to the brightness of the ambient light, and the proximity sensor may turn off the display panel and/or backlight.
  • the gravitational acceleration sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used for applications that recognize the attitude of mobile phones (such as horizontal and vertical screen switching, related Gaming, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; as for other sensors such as barometer, hygrometer, thermometer, infrared sensor, etc. that can be configured by electronic equipment, I will not repeat them here.
  • attitude of mobile phones such as horizontal and vertical screen switching, related Gaming, magnetometer attitude calibration
  • vibration recognition related functions such as pedometer, tap
  • other sensors such as barometer, hygrometer, thermometer, infrared sensor, etc. that can be configured by electronic equipment, I will not repeat them here.
  • the display unit 307 is configured to: display information input by or provided to the user and various graphical user interfaces of the electronic device. These graphical user interfaces may be composed of graphics, text, icons, videos and any combination thereof.
  • the display unit 307 may include a display panel.
  • the display panel may be configured in the form of a liquid crystal display (LCD, Liquid Crystal Display), an organic light-emitting diode (OLED, Organic Light-Emitting Diode), or the like.
  • LCD liquid crystal display
  • OLED Organic Light-Emitting Diode
  • the second memory 3023 is configured to store software programs and modules, and the application processor 3022 executes various functional applications and image data processing by running the software programs and modules stored in the second memory 3023 .
  • the second memory 3023 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Stores data (such as audio data, phonebook, etc.) created in accordance with the use of electronic devices, etc.
  • the second memory 3023 may include a high-speed random access first memory, and may also include a non-volatile first memory, such as at least one magnetic disk first storage device, flash memory device, or other volatile solid-state first storage device.
  • the second memory 3023 may further include a first memory controller to provide the multimedia processing chip 301 , the application processor 3022 and the input unit 306 to access the first memory 3013 .
  • the first memory 3013 is configured to store software programs and modules, and the central processing unit 3011 executes various functional applications and image data processing by running the software programs and modules stored in the first memory 3013 .
  • the first memory 3013 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Stores data (such as audio data, phonebook, etc.) created in accordance with the use of electronic devices, etc.
  • the first memory 3013 may include a high-speed random access first memory, and may also include a non-volatile first memory, such as at least one magnetic disk first storage device, flash memory device, or other volatile solid-state first storage device.
  • the first memory 3013 may further include a first memory controller to provide access to the first memory 307 by the central processing unit 3011 and the input unit 306.
  • the application processor 3022 is the control center of the electronic equipment. It uses various interfaces and lines to connect various parts of the entire mobile phone, and runs or executes software programs and/or modules stored in the second memory 3023, and calls stored in the second memory.
  • the data in 3023 performs various functions of electronic equipment and processes data, so as to monitor the mobile phone as a whole.
  • the electronic device also includes a power supply 305 (such as a battery) that supplies power to each component.
  • the power supply can be logically connected to the application processing chip 302 and the multimedia processing chip 301 through the power management system, so as to realize the management of charging, discharging, and functions such as power management.
  • the power supply 305 may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components.
  • the input unit 306 is configured to receive input numeric or character information, and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.
  • the input unit 306 may include a touch-sensitive surface as well as other input devices.
  • the input unit transmits the input data to the application processor 3022, and can receive and execute commands sent by the application processor 3022.
  • touch-sensitive surfaces can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave.
  • input unit 306 may also include other input devices.
  • other input devices may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.
  • the electronic device may also include a camera, a Bluetooth module, etc., which will not be repeated here.
  • the multi-central processing unit 3011 in the electronic device loads the executable file corresponding to the process of one or more application programs into the first memory 3013 according to the following instructions, and the application processor 3022 to run the application program stored in the first memory 3013, so as to realize various functions:
  • An embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium.
  • a computer program is stored in the computer-readable storage medium.
  • the computer program executes the method described in any of the above-mentioned embodiments. Image data processing method.
  • the computer readable storage medium may include but not limited to: read only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.

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Abstract

本申请实施例公开了一种图像数据处理方法、多媒体处理芯片以及电子设备。多媒体处理芯片从应用处理芯片接收光学防抖数据序列以及第一系统时间戳;从图像传感器接收原始图像数据并记录生命周期;根据生命周期和第一系统时间戳确定出目标光学防抖数据;向应用处理芯片提供目标光学防抖数据和原始图像数据。提高了图像数据的处理效率和图像处理效果。

Description

图像数据处理方法、多媒体处理芯片以及电子设备
本申请要求于2021年06月18日提交中国专利局、申请号为202110680585.6、申请名称为“图像数据处理方法、多媒体处理芯片以及电子设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子设备技术领域,具体涉及一种图像数据处理方法、多媒体处理芯片以及电子设备。
背景技术
随着电子设备的发展,拍摄质量的高低已经成为衡量如智能手机、平板电脑等电子设备性能的关键。例如,利用电子设备的传感器采集的传感器数据对图像进行处理,以提升拍摄得到的图像或者视频的质量,但是当电子设备通过多个芯片对图像进行多次处理时,存在同一芯片获取到的图像数据与传感器数据不同步的情况,导致图像处理的质量低下。
发明内容
本申请实施例提供一种图像数据处理方法、多媒体处理芯片以及电子设备,能够提升图像效果。
第一方面,本申请实施例提供一种图像数据处理方法,应用于多媒体处理芯片,所述方法包括:
从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;
从图像传感器接收原始图像数据,并记录所述原始图像数据的生命周期;
根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列中确定出与所述原始图像数据对应的目标光学防抖数据;
向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据。
第二方面,本申请实施例还提供一种多媒体处理芯片,包括:
中央处理器,用于从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;
从图像传感器接收原始图像数据,并记录所述原始图像数据的生命周期;
根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列中确定出 与所述原始图像数据对应的目标光学防抖数据;以及
向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据。
第三方面,本申请实施例还提供一种计算机可读存储介质,其上存储有计算机程序,当所述计算机程序在计算机上运行时,使得所述计算机执行如本申请任一实施例提供的图像数据处理方法。
第四方面,本申请实施例还提供一种电子设备,所述电子设备包括本申请任意实施例提供的多媒体处理芯片、图像传感器、光学防抖组件和应用处理芯片,其中,所述应用处理芯片包括传感器控制模块;
所述图像传感器配置成采集原始图像数据,并将所述原始图像数据传输至所述多媒体处理芯片;
所述光学防抖组件配置成在所述原始图像数据的拍摄过程中,根据所述电子设备的运动数据序列生成光学防抖数据序列,并将所述光学防抖数据序列传输至所述传感器控制模块;以及
所述传感器控制模块配置成向所述多媒体处理芯片提供所述光学防抖数据序列。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的图像数据处理方法的第一种流程示意图。
图2为本申请实施例提供的图像数据处理方法中光学防抖数据与原始图像数据匹配示意图。
图3为本申请实施例提供的多媒体处理芯片的第一种结构示意图。
图4为本申请实施例提供的多媒体处理芯片的第二种结构示意图。
图5为本申请实施例提供的电子设备的第一种结构示意图。
图6为本申请实施例提供的电子设备的第二种结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实 施例。基于本申请中的实施例,本领域技术人员在没有付出创造性劳动前提下所获得的所有其他实施例,都属于本申请的保护范围。
在本文中提及“实施例”意味着,结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是,本文所描述的实施例可以与其它实施例相结合。
本申请实施例提供以中国图像数据处理方法,包括:
从图像传感器接收原始图像数据,并记录所述原始图像数据的生命周期;
从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;
根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列确定出与所述原始图像数据对应的目标光学防抖数据;
向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据。
在一些实施例中,记录所述原始图像数据的生命周期包括:
当从所述图像传感器接收到所述原始图像数据时,将所述原始图像数据的开始曝光时间点记录为第一曝光起始时间点;
当从所述图像传感器接收到所述原始图像数据的下一帧图像数据时,将所述下一帧图像数据的开始曝光时间点记录为第二曝光起始时间点;
将所述第一曝光起始时间点与所述第二曝光起始时间点之间的时间区间记录为所述原始图像数据的生命周期。
在一些实施例中,还包括:
在接收所述光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳之前,执行:
从所述应用处理芯片接收第二系统时间戳;
获取第三系统时间戳;
记录所述第二系统时间戳与所述第三系统时间戳的同步关系。
在一些实施例中,根据所述生命周期和所述第一系统时间戳从所述光学防抖数据序列确定出与所述原始图像数据对应的目标光学防抖数据进一步包括:
根据所述同步关系调整所述生命周期对应的所述第一曝光起始时间点与所述第二曝光起始时间点;
根据所述第一系统时间戳,从所述光学防抖数据序列确定出调整后的所述第一 曝光起始时间点至所述第二曝光起始时间点之间的光学防抖数据帧,作为所述目标光学防抖数据。
在一些实施例中,向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据包括:
根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据;
将所述目标光学防抖数据、所述运动估计数据以及所述原始图像数据传输至所述应用处理芯片。
在一些实施例中,向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据包括:
根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据;
根据所述运动估计数据对所述原始图像数据进行前处理,得到前处理图像数据;
将所述前处理数据传输至所述应用处理芯片。
在一些实施例中,所述前处理包括去噪处理和/或去鬼影处理。
在一些实施例中,所述光学防抖数据包括校验位,所述方法还包括:在根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据之前,执行:
根据所述校验位对所述目标光学防抖数据进行校验;
若校验成功,则根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据。
本申请实施例提供一种图像数据处理方法,该图像数据处理方法的执行主体可以是本申请实施例提供的多媒体处理芯片,或者集成了该多媒体处理芯片的电子设备,其中该多媒体处理芯片可以采用硬件或者软件的方式实现。其中,电子设备可以是智能手机、平板电脑、掌上电脑、笔记本电脑、或者台式电脑等设备。
请参阅图1,图1为本申请实施例提供的图像数据处理方法的第一种流程示意图。本申请实施例提供的图像数据处理方法的具体流程可以如下:
101、从图像传感器接收原始图像数据,并记录原始图像数据的生命周期。
本申请实施例中的电子设备可以包括图像传感器、多媒体处理芯片以及应用处理芯片,其中,图像传感器完成曝光后,会将拍摄得到的原始图像数据传输至多媒体处理芯片,或者多媒体处理芯片从图像传感器读取曝光得到的原始图像数据。多媒体处理芯片可以对从图像传感器接接收到的原始图像数据进行一些前处理,得到前处理图像数据,再将前处理图像数据传输至应用处理芯片,由应用处理芯片对该前处理图像数据进行后处理,得到后处理图像数据,并输出后处理图像数据,例如, 基于该后处理图像数据进行图像拍摄预览、图像拍摄输出、视频拍摄预览或者视频拍摄输出等。
102、从应用处理芯片接收光学防抖数据序列以及光学防抖数据序列对应的第一系统时间戳。
其中,电子设备还包括光学防抖组件,该光学防抖组件一般与图像传感器、镜头同属于摄像头模组,并且光学防抖组件与图像传感器同步工作,在图像传感器进行曝光的同时,光学防抖组件根据电子设备的运动传感器检测到的运动数据计算得到光学防抖数据,并控制镜头移动和/或旋转,以实现光学防抖处理。因此,图像传感器传输到多媒体处理芯片中的原始图像数据是经过光学防抖处理的。其中,上述运动传感器包括但不限于以下多个传感器中的任意一个或多个:陀螺仪、加速度传感器、重力传感器等。
以运动传感器为陀螺仪(Gyroscope,简称为GYRO)为例,在图像传感器曝光拍摄的过程中,陀螺仪按照恒定频率输出陀螺仪数据,根据陀螺仪数据可以获取电子设备的运动情况,光学防抖组件根据陀螺仪数据检测到电子设备在拍摄过程中发生抖动,则通过控制镜头移动或旋转来纠正这种抖动发生的偏移,进而实现光学防抖。其中,陀螺仪按照恒定频率输出陀螺仪数据,构成陀螺仪数据序列,光学防抖组件按照同样的频率根据光学防抖数据序列,进行转换处理得到光学防抖数据序列。每一帧光学防抖数据中包含位移补偿信息和/或旋转位移信息。
除了用于进行光学防抖处理之外,光学防抖数据还可以传输给多媒体处理芯片,多媒体处理芯片可以使用光学防抖数据进行运动估计,得到的运动估计数据可以用于对原始图像数据进行处理。
此外,根据电子设备的其他图像处理需求,还需要将光学防抖数据发送至电子设备中的其他器件,比如应用处理芯片,应用处理芯片中的Camera HAL(Camera Hardware Abstraction Layer,摄像头硬件抽象层)可以是使用光学防抖数据对图像进行处理,比如,Camera HAL根据光学防抖数据对原始图像数据的姿态进行还原校正,得到校正图像,再对该校正图像进行电子防抖处理。
需要说明的是,电子设备还包括应用处理芯片,该应用处理芯片包括传感器控制模块(SENSOR HUB),光学防抖组件与该传感器控制模块连接,并且需要将光学防抖数据发送给该传感器控制模块,由传感器控制模块将其发送给其他需要使用光学防抖数据的硬件,比如,由传感器控制模块将光学防抖数据发送给多媒体处理芯片和应用处理芯片。而传感器控制模块的外设接口数量一般是有限的,故本申请 实施例中,传感器控制模块配置成按分时方式将光学防抖数据序列发送至应用处理芯片和多媒体处理芯片,在不对硬件接口进行扩充的情况下,保证两个硬件对光学防抖数据的需求。
根据上文的说明,图像传感器将曝光得到的原始图像数据传输至多媒体处理芯片,与此同时,应用处理芯片中的传感器控制模块也会将光学防抖数据序列传输至多媒体处理芯片,并且,传感器控制模块传输的光学防抖数据序列中每一帧光学防抖数据都携带有对应的第一系统时间戳。需要说明的是,本申请实施例中,传感器控制模块与应用处理芯片的时间戳是同步的,或者预先经过了同步处理。因此,传感器控制模块在将光学防抖数据传输至多媒体处理芯片时可以携带传感器控制模块的系统时间戳。
图像传感器会按照一定的曝光参数将曝光得到的多帧原始图像数据持续地发送给多媒体处理芯片,多媒体处理芯片根据接收到原始图像数据的时间点来记录一帧原始图像数据的生命周期。
例如,在一实施例中,记录原始图像数据的生命周期包括:
当从图像传感器接收到原始图像数据时,将原始图像数据的开始曝光时间点记录为第一曝光起始时间点;
当从图像传感器接收到原始图像数据的下一帧图像数据时,将下一帧图像数据的开始曝光时间点记录为第二曝光起始时间点;
将第一曝光起始时间点与第二曝光起始时间点之间的时间区间记录为原始图像数据的生命周期。
请参照图2,图2为本申请实施例提供的图像数据处理方法中光学防抖数据与原始图像数据匹配示意图。该实施例中,多媒体处理芯片将原始图像数据曝光起始时间点,与该原始图像数据的下一帧图像数据的曝光起始时间点之间的时间区间记录为该原始图像数据的生命周期。
其中,图像传感器、多媒体处理芯片和应用处理芯片均设置有通信模块,例如,该通信模块为MIPI(Mobile Industry Processor Interface,移动产业处理器接口)模块。例如,多媒体处理芯片的MIPI模块可以包括第一接口和第二接口,第一接口可接收图像传感器的MIPI接口传输的原始图像数据,第二接口可以将处理得到的前处理图像数据发送至应用处理芯片的MIPI接口。
此外,多媒体处理芯片和传感器控制模块均设置有外设接口,例如,该外设接口为I2C(Inter-Integrated Circuit,两线式串行总线)接口或SPI(Serial Peripheral  Interface,串行外设接口)接口,例如,多媒体处理芯片通过SPI/I2C接口接收传感器控制模块的SPI/I2C接口发送的光学防抖数据。
103、根据生命周期和第一系统时间戳,从光学防抖数据序列中确定出与原始图像数据对应的目标光学防抖数据。
多媒体处理芯片在接收到光学防抖数据序列和原始图像数据之后,从光学防抖数据序列中确定出与原始图像数据对应的目标光学防抖数据。
例如,在一实施例中,该方法还包括:在接收所述光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳之前,执行:
从所述应用处理芯片接收第二系统时间戳;
获取第三系统时间戳;
记录所述第二系统时间戳与所述第三系统时间戳的同步关系。
本申请实施例中的多媒体处理芯片与应用处理芯片可以使用同源时钟。但是,由于电子设备在启动后,其应用处理芯片一般也会启动,而多媒体处理芯片一般在启动摄像头进行拍摄时,才会启动,以用于对拍摄得到的图像数据进行处理,因此,即使两个芯片使用同源时钟,它们的时间戳之间也会存在时间差。因此,在多媒体处理芯片启动后,将两个芯片的时间戳进行同步处理。在多媒体处理芯片启动后,接收应用处理芯片发送的第二系统时间戳;获取多媒体处理芯片的第三系统时间戳;记录第二系统时间戳与第三系统时间戳的同步关系。
基于上一实施例,在另一实施例中,根据生命周期和第一系统时间戳从光学防抖数据序列确定出与原始图像数据对应的目标光学防抖数据进一步包括:根据同步关系调整生命周期对应的第一曝光起始时间点与第二曝光起始时间点;根据第一系统时间戳,从光学防抖数据序列确定出调整后的第一曝光起始时间点至第二曝光起始时间点之间的光学防抖数据帧,作为目标光学防抖数据。
该实施例中,在匹配光学防抖数据与原始图像数据之前,先根据该同步关系调整生命周期对应的第一曝光起始时间点与第二曝光起始时间点;接着,根据第一系统时间戳,从光学防抖数据序列中确定出调整后的第一曝光起始时间点至第二曝光起始时间点之间的光学防抖数据帧,作为目标光学防抖数据。
104、向应用处理芯片提供目标光学防抖数据和原始图像数据。
多媒体处理芯片在获取到目标光学防抖数据之后,向应用处理芯片提供目标光学防抖数据和原始图像数据,例如多媒体处理芯片可以主动将目标光学防抖数据和原始图像数据一并传输至应用处理芯片,也可以是应用处理芯片向多媒体处理芯片 请求原始图像数据时,将目标光学防抖数据和原始图像数据一并传输至应用处理芯片,以供应用处理芯片使用目标光学防抖数据对该原始图像数据进行后处理。
可选的,在一些实施例中,向应用处理芯片提供目标光学防抖数据和原始图像数据,包括:
根据目标光学防抖数据计算原始图像数据对应的运动估计数据,运动估计数据包括偏移数据和旋转数据;
将目标光学防抖数据、运动估计数据以及原始图像数据传输至应用处理芯片。
该实施例中,多媒体处理芯片在得到目标光学防抖数据之后,根据目标光学防抖数据计算原始图像数据对应的运动估计数据,该运动估计数据包括偏移数据和旋转数据,表征了原始图像数据在曝光过程中由于光学防抖所进行的偏移和旋转情况。然后,多媒体处理芯片将目标光学防抖数据、运动估计数据以及原始图像数据传输至应用处理芯片。
可选的,在一些实施例中,向应用处理芯片提供目标光学防抖数据和原始图像数据包括:根据目标光学防抖数据计算原始图像数据对应的运动估计数据;根据运动估计数据对原始图像数据进行前处理,得到前处理图像数据;将前处理数据传输至应用处理芯片。
该实施例中,多媒体处理芯片在计算得到运动估计数据之后,还可以进一步的根据该运动估计数据对原始图像数据进行前处理,例如,进行去噪处理和/或去鬼影处理,得到前处理图像数据,然后将前处理图像数据发送至应用处理芯片,或者,还可以将前处理图像数据,以及运动估计数据、目标光学防抖数据通过MIPI接口发送到应用处理芯片。应用处理芯片可以进一步地对前处理图像数据进一步的后处理。
可选的,在一些实施例中,光学防抖数据包括校验位,该方法还包括:在根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据之前,执行:根据目标光学防抖数据中的校验位对目标光学防抖数据进行校验;若校验成功,则根据目标光学防抖数据计算原始图像数据对应的运动估计数据。
该实施例中,传感器控制模块为每一帧光学防抖数据增加一个校验位,多媒体处理芯片或者应用处理芯片在使用该目标光学防抖数据时,都可以先根据该校验位来判断光学防抖数据的准确性,以保证该光学防抖数据被准确无误地传输到多媒体处理芯片。可以理解的是,如果根据校验位检测到光学发抖数据传输发送错误,则可以确定传输错误的光学防抖数据帧对应的时间戳,并基于该时间戳重新从传感器 控制模块请求对应的光学防抖数据帧。
具体实施时,本申请不受所描述的各个步骤的执行顺序的限制,在不产生冲突的情况下,某些步骤还可以采用其它顺序进行或者同时进行。
由上可知,本申请实施例提供的图像数据处理方法,多媒体处理芯片从图像传感器接收原始图像数据,并记录该原始图像数据的生命周期,与此同时,多媒体处理芯片还从应用处理芯片接收光学防抖数据序列以及光学防抖数据序列对应的第一系统时间戳;然后,根据生命周期和第一系统时间戳从光学防抖数据序列中确定出与原始图像数据对应的目标光学防抖数据,实现原始图像数据和光学防抖数据在时间上的同步,使得直接接收原始图像数据的多媒体处理芯片可以快速地将同时接收到原始图像数据和光学防抖数据进行同步处理,在数据发送到应用处理芯片之前即可在实现两种数据的同步,并且将匹配处理得到的目标光学防抖数据和原始图像数据发送给应用处理芯片,使得应用处理芯片可以直接获取到同步处理后的目标光学防抖数据和原始图像数据,无需再进行数据同步处理,即可直接根据目标光学防抖数据对原始图像数据进行处理,不仅提高了图像数据的处理效率,而且避免了数据延迟,进而提高了图像处理效果。
本申请实施例还提供一种多媒体处理芯片,包括中央处理器,所述中央处理器配置成:
从图像传感器获取原始图像数据,并记录所述原始图像数据的生命周期;
从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;
根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列确定出与所述原始图像数据对应的目标光学防抖数据;以及
向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据。
在一些实施例中,所述中央处理器还配置成:
当从所述图像传感器接收到所述原始图像数据时,将所述原始图像数据的开始曝光时间点记录为第一曝光起始时间点;
当从所述图像传感器接收到所述原始图像数据的下一帧图像数据时,将所述下一帧图像数据的开始曝光时间点记录为第二曝光起始时间点;
将所述第一曝光起始时间点与所述第二曝光起始时间点之间的时间区间记录为所述原始图像数据的生命周期。
在一些实施例中,所述中央处理器还配置成:
从所述应用处理芯片接收第二系统时间戳;
获取第三系统时间戳;
记录所述第二系统时间戳与所述第三系统时间戳的同步关系。
在一些实施例中,所述中央处理器还配置成:
根据所述同步关系调整所述生命周期对应的所述第一曝光起始时间点与所述第二曝光起始时间点;
根据所述第一系统时间戳,从所述光学防抖数据序列确定出调整后的所述第一曝光起始时间点至所述第二曝光起始时间点之间的光学防抖数据帧,作为所述目标光学防抖数据。
在一些实施例中,所述中央处理器还配置成:
根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据。
在一些实施例中,还包括前图像处理器,其配置成:
根据所述运动估计数据对所述原始图像数据进行前处理,得到前处理图像数据;以及
将所述运动估计数据、所述目标光学防抖数据和/或所述前处理数据传输至所述应用处理芯片。
在一些实施例中,所述中央处理器还配置成:
根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据;
将所述目标光学防抖数据、所述运动估计数据以及所述原始图像数据传输至所述应用处理芯片。
在一些实施例中,所述光学防抖数据包括校验位,所述中央处理器还配置成:
根据所述校验位对所述目标光学防抖数据进行校验;
若校验成功,则根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据。
在一实施例中还提供一种多媒体处理芯片。请参阅图3,图3为本申请实施例提供的多媒体处理芯片的第一种结构示意图。其中该多媒体处理芯片300应用于电子设备300,该多媒体处理芯片301包括中央处理器3011,该中央处理器3011配置成:
从图像传感器接收原始图像数据,并记录所述原始图像数据的生命周期;
从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;
根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列中确定出与所述原始图像数据对应的目标光学防抖数据;以及
向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据。
在一些实施例中,中央处理器3011配置成:
当从所述图像传感器接收到所述原始图像数据时,将所述原始图像数据的开始曝光时间点记录为第一曝光起始时间点;
当接收到所述图像传感器发送的所述原始图像数据的下一帧图像数据时,将所述下一帧图像数据的开始曝光时间点记录为第二曝光起始时间点;以及
将所述第一曝光起始时间点与所述第二曝光起始时间点之间的时间区间记录为所述原始图像数据的生命周期。
在一些实施例中,中央处理器3011配置成:
从所述应用处理芯片接收第二系统时间戳;
获取第三系统时间戳;
记录所述第二系统时间戳与所述第三系统时间戳的同步关系。
在一些实施例中,中央处理器3011配置成:
根据所述同步关系调整所述生命周期对应的所述第一曝光起始时间点与所述第二曝光起始时间点;以及
根据所述第一系统时间戳,从所述光学防抖数据序列确定出调整后的所述第一曝光起始时间点至所述第二曝光起始时间点之间的光学防抖数据帧,作为所述目标光学防抖数据。
在一些实施例中,中央处理器3011配置成:
根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据,所述运动估计数据包括偏移数据和旋转数据;
将所述目标光学防抖数据、所述运动估计数据以及所述原始图像数据传输至应用处理芯片。
请参阅图4,图4为本申请实施例提供的多媒体处理芯片的第二种结构示意图。
在一些实施例中,该多媒体处理芯片301还包括前图像处理器3012,前图像处理器3012配置成:
根据所述运动估计数据对所述原始图像数据进行前处理,得到前处理图像数据;以及
将所述前处理数据传输至应用处理芯片。
在一些实施例中,所述前处理包括去噪处理和/或去鬼影处理。
在一些实施例中,所述光学防抖数据包括校验位;中央处理器3011配置成:
根据所述目标光学防抖数据中的校验位对所述目标光学防抖数据进行校验;以及
若校验成功,则根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据。
应当说明的是,本申请实施例提供的多媒体处理芯片与上文实施例中的图像数据处理方法属于同一构思,通过该多媒体处理芯片可以实现图像数据处理方法实施例中提供的任一方法,其具体实现过程详见图像数据处理方法实施例,此处不再赘述。
由上可知,本申请实施例提出的多媒体处理芯片,通过中央处理器3011从图像传感器接收原始图像数据,并记录该原始图像数据的生命周期,与此同时,多媒体处理芯片还从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;然后,根据生命周期和第一系统时间戳从光学防抖数据序列中确定出与原始图像数据对应的目标光学防抖数据,实现原始图像数据和光学防抖数据在时间上的同步,使得直接接收原始图像数据的多媒体处理芯片可以快速地将同时接收到原始图像数据和光学防抖数据进行同步处理,在数据发送到应用处理芯片之前即可在实现两种数据的同步,并且将匹配处理得到的目标光学防抖数据和原始图像数据发送给应用处理芯片,使得应用处理芯片可以直接获取到同步处理后的目标光学防抖数据和原始图像数据,无需再进行数据同步处理,即可直接根据目标光学防抖数据对原始图像数据进行处理,不仅提高了图像数据处理效率,而且避免了数据延迟,进而提高了图像处理效果。
本申请实施例还提供一种电子设备,该电子设备可以是诸如平板电脑或者智能手机等移动终端。请参阅图5,图5为本申请实施例提供的电子设备的第一种结构示意图。
电子设备300包括上述任一实施例提出的多媒体处理芯片301、应用处理芯片302、图像传感器303和光学防抖组件304,其中,应用处理芯片302包括传感器控制模块3021;
图像传感器303配置成:采集原始图像数据,并将所述原始图像数据传输至多媒体处理芯片301;
光学防抖组件304配置成:在所述原始图像数据的拍摄过程中,根据所述电子 设备的运动数据序列生成光学防抖数据序列,并将所述光学防抖数据序列传输至传感器控制模块3021;以及
传感器控制模块3021配置成:向所述多媒体处理芯片301提供所述光学防抖数据序列。
其中,多媒体处理芯片301和应用处理芯片302通过互连总线连接,例如PCIE(peripheral component interconnect express)总线,PCIE总线具备点对点双通道高带宽传输的特点。多媒体处理芯片301还可以通过MIPI(Mobile Industry Processor Interface,移动产业处理器接口)线连接到应用处理芯片302。多媒体处理芯片301还可以根据SPI(Serial Peripheral Interface,串行外设接口)总线连接,SPI的通信原理通常有一个主设备和多个从设备,即主设备可以为应用处理芯片302,从设备可以为多媒体处理芯片301。
另外应用处理芯片302和多媒体处理芯片301之间的消息可以通过通用输入/输出口(GPIO,General-purpose input/output)中断的形式来触发。
本申请实施例的多媒体处理芯片301可以先对图像进行预处理,并将预处理的结果传输到平台端(即应用处理芯片302)的ISP。平台端的ISP基于多媒体处理芯片301的处理结果作为输入数据,并进行进一步的处理。从而可以提升图像质量。
本申请实施例的多媒体处理芯片301可以对其获取到的原始图像数据诸如RAW图像进行处理,以便于其他图像处理器对图像数据进行进一步处理,以提升图像质量。
多媒体处理芯片301可以对静态图像数据进行处理,诸如用户在拍照模式下所获取到的静态图像数据。多媒体处理芯片301还可以对动态图像数据进行处理,诸如用户在预览模式或录制视频模式所获取到的动态图像数据。
可以理解的是,静态图像数据和动态图像数据均可以由平台端(System-on-a-Chip,SoC芯片)的处理器进行处理。平台端还可以理解为应用处理芯片,平台端的处理器可以理解为图像信号处理器(Image Signal Processing,ISP)和应用处理器(AP,Application Processor)。然而,平台端往往对图像数据的处理能力有限。随着用户对图像质量的要求越来越高,仅通过平台端对图像数据进行处理往往并不能够满足用户需求。
为了提升图像质量,可以理解为图像显示时的质量。本申请实施例的多媒体处理芯片301的图像处理器先对图像进行前处理,并将前处理的结果传输到平台端。平台端基于前处理结果作为输入数据,并进行后处理。从而可以提升图像质量。
例如,在一些实施例中,多媒体处理芯片301接收图像传感器303发送的原始图像数据,并记录该原始图像数据的生命周期,与此同时,多媒体处理芯片301还接收应用处理芯片302的传感器控制模块3021发送的光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;然后,根据生命周期和第一系统时间戳从光学防抖数据序列中确定出与原始图像数据对应的目标光学防抖数据,并将目标光学防抖数据和原始图像数发送至应用处理芯片302。
请继续参阅图6,图6是本申请实施例提供的电子设备的第二种结构示意图。其中电子设备300包括多媒体处理芯片301和应用处理芯片302、图像传感器303、光学防抖组件304、电源305、输入单元306和显示单元307。多媒体处理芯片301包括中央处理器3011、前图像处理器3012和第一存储器3013;应用处理芯片302包括传感器控制模块3021、应用处理器3022和第二存储器3023。本领域技术人员可以理解,图6中示出的电子设备结构并不构成对电子设备的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
在一实施例中,多媒体处理芯片301包括中央处理器3011、第一存储器3013和前图像处理器3012,具体如下:
中央处理器3011配置成:从图像传感器接收原始图像数据,并记录所述原始图像数据的生命周期;从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列中确定出与所述原始图像数据对应的目标光学防抖数据;以及向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据302。
电子设备的图像传感器303进行曝光并输出原始图像数据,多媒体处理芯片301通过MIPI接口接收到图像传感器303输出的原始图像数据,将该原始图像数据存储至第一存储器3013。其中,多媒体处理芯片301将原始图像数据曝光起始时间点,与该原始图像数据的下一帧图像数据的曝光起始时间点之间的时间区间记录为该原始图像数据的生命周期。
前图像处理器3012配置成:对所述原始图像数据进行前处理,得到前处理图像数据。
多媒体处理芯片可以从第一存储器中获取存储的原始图像数据,对该原始图像数据进行前处理,得到前处理图像数据。
中央处理器3011配置成:将所述前处理图像数据、所述目标光学防抖数据发送至应用处理芯片。
电子设备300的传感器,可以包括陀螺仪、光传感器、运动传感器以及其他传感器。具体地,光传感器可包括环境光传感器及接近传感器,其中,环境光传感器可根据环境光线的明暗来调节显示面板的亮度,接近传感器可在电子设备移动到耳边时,关闭显示面板和/或背光。作为运动传感器的一种,重力加速度传感器可检测各个方向上(一般为三轴)加速度的大小,静止时可检测出重力的大小及方向,可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等;至于电子设备还可配置的气压计、湿度计、温度计、红外线传感器等其他传感器,在此不再赘述。
显示单元307配置成:显示由用户输入的信息或提供给用户的信息以及电子设备的各种图形用户接口,这些图形用户接口可以由图形、文本、图标、视频和其任意组合来构成。显示单元307可包括显示面板,可选的,可以采用液晶显示器(LCD,Liquid Crystal Display)、有机发光二极管(OLED,Organic Light-Emitting Diode)等形式来配置显示面板。
第二存储器3023配置成:存储软件程序以及模块,应用处理器3022通过运行存储在第二存储器3023的软件程序以及模块,从而执行各种功能应用以及图像数据处理。第二存储器3023可主要包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等;存储数据区可存储根据电子设备的使用所创建的数据(比如音频数据、电话本等)等。此外,第二存储器3023可以包括高速随机存取第一存储器,还可以包括非易失性第一存储器,例如至少一个磁盘第一存储器件、闪存器件、或其他易失性固态第一存储器件。相应地,第二存储器3023还可以包括第一存储器控制器,以提供多媒体处理芯片301、应用处理器3022和输入单元306对第一存储器3013的访问。
第一存储器3013配置成:存储软件程序以及模块,中央处理器3011通过运行存储在第一存储器3013的软件程序以及模块,从而执行各种功能应用以及图像数据处理。第一存储器3013可主要包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等;存储数据区可存储根据电子设备的使用所创建的数据(比如音频数据、电话本等)等。此外,第一存储器3013可以包括高速随机存取第一存储器,还可以包括非易失性第一存储器,例如至少一个磁盘第一存储器件、闪存器件、或其他易失性固态第一存储器件。相应地,第一存储器3013还可以包括第一存储器控制 器,以提供中央处理器3011和输入单元306对第一存储器307的访问。
应用处理器3022是电子设备的控制中心,利用各种接口和线路连接整个手机的各个部分,通过运行或执行存储在第二存储器3023内的软件程序和/或模块,以及调用存储在第二存储器3023内的数据,执行电子设备的各种功能和处理数据,从而对手机进行整体监控。
电子设备还包括给各个部件供电的电源305(比如电池),优选的,电源可以通过电源管理系统与应用处理芯片302和多媒体处理芯片301逻辑相连,从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。电源305还可以包括一个或一个以上的直流或交流电源、再充电系统、电源故障检测电路、电源转换器或者逆变器、电源状态指示器等任意组件。
输入单元306配置成接收输入的数字或字符信息,以及产生与用户设置以及功能控制有关的键盘、鼠标、操作杆、光学或者轨迹球信号输入。在一实施例中,输入单元306可包括触敏表面以及其他输入设备。输入单元将输入的数据传送给应用处理器3022,并能接收应用处理器3022发来的命令并加以执行。此外,可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触敏表面。除了触敏表面,输入单元306还可以包括其他输入设备。具体地,其他输入设备可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
尽管未示出,电子设备还可以包括摄像头、蓝牙模块等,在此不再赘述。在一实施例中,电子设备中的多中央处理器3011会按照如下的指令,将一个或一个以上的应用程序的进程对应的可执行文件加载到第一存储器3013中,并由应用处理器3022来运行存储在第一存储器3013中的应用程序,从而实现各种功能:
从图像传感器接收原始图像数据,并记录所述原始图像数据的生命周期;
从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;
根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列中确定出与所述原始图像数据对应的目标光学防抖数据;
向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据。
本申请实施例还提供一种计算机可读存储介质,所述计算机可读存储介质中存储有计算机程序,当所述计算机程序在计算机上运行时,所述计算机执行上述任一实施例所述的图像数据处理方法。
需要说明的是,本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过计算机程序来指令相关的硬件来完成,所述计算机程序可以存储于计算机可读存储介质中,所述计算机可读存储介质可以包括但不限于:只读存储器(ROM,Read Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁盘或光盘等。
此外,本申请中的术语“第一”、“第二”和“第三”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。例如包含了一系列步骤或模块的过程、方法、系统、产品或设备没有限定于已列出的步骤或模块,而是某些实施例还包括没有列出的步骤或模块,或某些实施例还包括对于这些过程、方法、产品或设备固有的其它步骤或模块。
以上对本申请实施例所提供的图像数据处理方法、多媒体处理芯片以及电子设备进行了详细介绍。本文中应用了具体个例对本申请的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本申请的方法及其核心思想;同时,对于本领域的技术人员,依据本申请的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种图像数据处理方法,其中,包括:
    从图像传感器接收原始图像数据,并记录所述原始图像数据的生命周期;
    从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;
    根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列确定出与所述原始图像数据对应的目标光学防抖数据;
    向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据。
  2. 如权利要求1所述的方法,其中,记录所述原始图像数据的生命周期包括:
    当从所述图像传感器接收到所述原始图像数据时,将所述原始图像数据的开始曝光时间点记录为第一曝光起始时间点;
    当从所述图像传感器接收到所述原始图像数据的下一帧图像数据时,将所述下一帧图像数据的开始曝光时间点记录为第二曝光起始时间点;
    将所述第一曝光起始时间点与所述第二曝光起始时间点之间的时间区间记录为所述原始图像数据的生命周期。
  3. 如权利要求2所述的方法,其中,还包括:
    在接收所述光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳之前,执行:
    从所述应用处理芯片接收第二系统时间戳;
    获取第三系统时间戳;
    记录所述第二系统时间戳与所述第三系统时间戳的同步关系。
  4. 如权利要求3所述的方法,其中,根据所述生命周期和所述第一系统时间戳从所述光学防抖数据序列确定出与所述原始图像数据对应的目标光学防抖数据进一步包括:
    根据所述同步关系调整所述生命周期对应的所述第一曝光起始时间点与所述第二曝光起始时间点;
    根据所述第一系统时间戳,从所述光学防抖数据序列确定出调整后的所述第一曝光起始时间点至所述第二曝光起始时间点之间的光学防抖数据帧,作为所述目标光学防抖数据。
  5. 如权利要求1所述的方法,其中,向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据包括:
    根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据;
    将所述目标光学防抖数据、所述运动估计数据以及所述原始图像数据传输至所述应用处理芯片。
  6. 如权利要求1所述的方法,其中,向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据包括:
    根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据;
    根据所述运动估计数据对所述原始图像数据进行前处理,得到前处理图像数据;
    将所述前处理数据传输至所述应用处理芯片。
  7. 如权利要求6所述的方法,其中,所述前处理包括去噪处理和/或去鬼影处理。
  8. 如权利要求5或6所述的方法,其中,所述光学防抖数据包括校验位,所述方法还包括:在根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据之前,执行:
    根据所述校验位对所述目标光学防抖数据进行校验;
    若校验成功,则根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据。
  9. 一种多媒体处理芯片,包括中央处理器,其中,所述中央处理器配置成:
    从图像传感器获取原始图像数据,并记录所述原始图像数据的生命周期;
    从应用处理芯片接收光学防抖数据序列以及所述光学防抖数据序列对应的第一系统时间戳;
    根据所述生命周期和所述第一系统时间戳,从所述光学防抖数据序列确定出与所述原始图像数据对应的目标光学防抖数据;以及
    向所述应用处理芯片提供所述目标光学防抖数据和所述原始图像数据。
  10. 如权利要求9所述的多媒体处理芯片,其中,所述中央处理器还配置成:
    当从所述图像传感器接收到所述原始图像数据时,将所述原始图像数据的开始曝光时间点记录为第一曝光起始时间点;
    当从所述图像传感器接收到所述原始图像数据的下一帧图像数据时,将所述下一帧图像数据的开始曝光时间点记录为第二曝光起始时间点;
    将所述第一曝光起始时间点与所述第二曝光起始时间点之间的时间区间记录为所述原始图像数据的生命周期。
  11. 如权利要求10所述的多媒体处理芯片,其中,所述中央处理器还配置成:
    从所述应用处理芯片接收第二系统时间戳;
    获取第三系统时间戳;
    记录所述第二系统时间戳与所述第三系统时间戳的同步关系。
  12. 如权利要求11所述的多媒体处理芯片,其中,所述中央处理器还配置成:
    根据所述同步关系调整所述生命周期对应的所述第一曝光起始时间点与所述第二曝光起始时间点;
    根据所述第一系统时间戳,从所述光学防抖数据序列确定出调整后的所述第一曝光起始时间点至所述第二曝光起始时间点之间的光学防抖数据帧,作为所述目标光学防抖数据。
  13. 如权利要求9所述的多媒体处理芯片,其中,所述中央处理器还配置成:
    根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据。
  14. 如权利要求13所述的多媒体处理芯片,其中,还包括前图像处理器,其配置成:
    根据所述运动估计数据对所述原始图像数据进行前处理,得到前处理图像数据;以及
    将所述运动估计数据、所述目标光学防抖数据和/或所述前处理数据传输至所述应用处理芯片。
  15. 如权利要求9所述的多媒体处理芯片,其中,所述中央处理器还配置成:
    根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据;
    将所述目标光学防抖数据、所述运动估计数据以及所述原始图像数据传输至所述应用处理芯片。
  16. 如权利要求15所述的多媒体处理芯片,其中,所述光学防抖数据包括校验位,所述中央处理器还配置成:
    根据所述校验位对所述目标光学防抖数据进行校验;
    若校验成功,则根据所述目标光学防抖数据计算所述原始图像数据对应的运动估计数据。
  17. 一种计算机可读存储介质,其上存储有计算机程序,其中,当所述计算机程序在计算机上运行时,使得所述计算机执行如权利要求1至8任一项所述的图像数据处理方法。
  18. 一种电子设备,包括如权利要求9至16任一项所述的多媒体处理芯片、 图像传感器、光学防抖组件和应用处理芯片,其中,所述应用处理芯片包括传感器控制模块;其中,
    所述图像传感器配置成:采集原始图像数据,并将所述原始图像数据传输至所述多媒体处理芯片;
    所述光学防抖组件配置成:在所述原始图像数据的拍摄过程中,根据所述电子设备的运动数据序列生成光学防抖数据序列,并将所述光学防抖数据序列传输至所述传感器控制模块;以及
    所述传感器控制模块配置成:向所述多媒体处理芯片提供所述光学防抖数据序列。
  19. 如权利要求18所述的电子设备,其中,所述传感器控制模块配置成:按分时方式将所述光学防抖数据序列发送至所述应用处理芯片和所述多媒体处理芯片。
  20. 如权利要求18所述的电子设备,其中,所述应用处理芯片配置成:当从所述多媒体处理芯片接收到所述原始图像数据和所述运动估计数据时,根据所述运动估计数据对所述原始图像数据进行图像后处理。
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