WO2019011053A1 - 一种图像数据的处理方法和装置 - Google Patents
一种图像数据的处理方法和装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
- H04N13/344—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] with head-mounted left-right displays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/194—Transmission of image signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N2013/0074—Stereoscopic image analysis
Definitions
- the present invention relates to the field of data transmission technologies, and in particular, to a method and an apparatus for processing image data.
- a virtual display device usually includes a host and a display, and the host and the display of the VR are usually connected by wire or wirelessly.
- VR displays usually have a large field of vision (FOV), such as 120°.
- FOV field of vision
- a single-eye 1K (1200*1080) display screen with a refresh rate of 90 Hz is used.
- Image data such large image data transmission requires a large bandwidth.
- the VR host uses a wireless transmission method between the host and the display, the data needs to be compressed and decompressed, which causes the delay to be too large, and the delay is It is a key factor affecting the VR experience.
- the invention provides a method and a device for processing image data, so as to solve the problem that there is a large delay when data transmission between the host and the display of the VR is performed.
- the present invention provides a method for processing image data, which is applied to a host of a virtual reality device, and the method includes:
- the difference information is compression-encoded by using a preset encoding rule to obtain compressed difference encoding information
- the difference encoding information and the left eye image data frame are transmitted to the head mounted display of the virtual reality device; or the difference encoding information and the right eye image data frame are transmitted to the head mounted display of the virtual reality device.
- the present invention also provides a method for processing image data, which is applied to a head mounted display of a virtual reality device, the method comprising:
- the left eye image data frame and the right eye image data frame are displayed.
- the present invention provides an apparatus for processing image data, which is applied to a host of a virtual reality device, the device comprising:
- a difference acquiring unit configured to separately acquire a left eye image data frame to be transmitted and a corresponding right eye image data frame, and perform a difference between the acquired left eye image data frame and the corresponding right eye image data frame to obtain a binocular image data frame. Difference information between;
- a coding unit configured to compress and encode the difference information by using a preset coding rule, to obtain compressed difference coding information
- a sending unit configured to send the difference encoding information and the left eye image data frame to the head mounted display of the virtual reality device; or send the difference encoding information and the right eye image data frame to the head mounted display of the virtual reality device.
- the present invention also provides a processing device for image data, which is applied to a head mounted display of a virtual reality device, the device comprising:
- a receiving unit configured to receive the difference encoding information and the left eye image data frame sent by the host of the virtual reality device, or receive the difference encoding information and the right eye image data frame sent by the host; wherein the difference encoding information is the left eye to be transmitted
- the difference information between the image data frame and the right eye image data frame is obtained by compression coding after a preset encoding rule;
- a decoding unit configured to decompress the difference encoding information according to a preset decoding rule, to obtain difference information
- a calculating unit configured to obtain a corresponding right eye image data frame according to the difference information and the received left eye image data frame, or obtain a corresponding left eye image data frame according to the difference information and the received right eye image data frame;
- a display unit for displaying a left eye image data frame and a right eye image data frame.
- an apparatus for processing image data which is applied to a host of a virtual reality device, the apparatus comprising a machine readable storage medium and a processor, between the machine readable storage medium and the processor Through an internal bus communication connection, a machine-readable storage medium stores a computer program executable by a processor that, when executed by a processor, causes the method steps described above to be implemented.
- the present invention also provides an apparatus for processing image data, which is applied to a head mounted display of a virtual reality device, the apparatus comprising a machine readable storage medium and a processor, and the machine readable storage medium and the processor are connected by an internal bus communication
- the machine-readable storage medium stores a computer program executable by a processor that, when executed by the processor, causes the method steps described above to be implemented.
- the invention has the beneficial effects that the host of the virtual reality device performs the difference between the left eye image data frame to be transmitted and the corresponding right eye image data frame to obtain the difference information between the binocular image data frames, and does not need to be performed.
- the difference information between the binocular image data frames can be obtained only by simple subtraction operation, and the difference information is compressed and encoded by a simple coding rule, so that the host only needs to transmit the difference.
- the coded information and the image data frame of one eye reduce the bandwidth occupied by the image data transmission, and further reduce the delay; the head mounted display of the present invention decodes the difference coded information sent by the host to obtain the difference information, and passes the difference information and receives the difference information.
- the left eye image data frame can be simply added to construct another eye image data frame. After the image data frame is constructed, the image data can be output and displayed; the head mounted display only needs to be simple to receive the received data. Decoding and addition operations, the computational complexity is low, and the processing time required is extremely short, so Reduce the delay data, improving the user experience.
- FIG. 1 is a flowchart of a method for processing image data applied to a transmitting end of a host according to an embodiment of the present invention
- FIG. 2 is a flowchart of a method for processing image data applied to a head mounted display according to an embodiment of the present invention
- FIG. 3 is a functional block diagram of a processing device for applying image data to a transmitting end of a host according to an embodiment of the present invention
- FIG. 4 is a functional block diagram of a processing apparatus for image data applied to a head mounted display according to an embodiment of the present invention
- FIG. 5 is a structural block diagram of an apparatus for processing image data applied to a transmitting end of a host according to an embodiment of the present invention
- FIG. 6 is a structural block diagram of a processing apparatus for image data applied to a head mounted display according to an embodiment of the present invention.
- a common technical method in the video compression algorithm is inter-frame prediction, which uses the inter-frame redundant information of two frames before and after the same video sequence on the time axis for motion estimation, and then uses compression coding to compress.
- system delay is a very important indicator.
- Typical video compression algorithms cause non-negligible delays due to high computational complexity.
- the embodiment of the present invention provides a method for processing image data in response to the above situation.
- FIG. 1 is a flowchart of a method for processing image data applied to a transmitting end of a host according to an embodiment of the present invention.
- the processing method is applied to a host of a virtual reality device, and is particularly suitable for a host that performs data transmission with a head mounted display through a wireless connection. .
- the method for processing image data in this embodiment includes:
- S110 Obtain a left eye image data frame to be transmitted and a corresponding right eye image data frame respectively, and perform a difference between the respectively acquired left eye image data frame and the corresponding right eye image data frame to obtain a binocular image data frame. Difference information.
- the corresponding pixel values in the left eye image data frame and the right eye image data frame may be made poor to obtain difference information between the binocular image data frames.
- the difference information obtained by the left and right eye image data frames is mainly the close-range difference information between the binocular image data.
- a relatively simple compression coding method such as run length coding or entropy coding may be utilized.
- the rule compresses and encodes the difference information to facilitate fast compression and decompression of the difference information, so that the delay generated by the compression and decompression process is negligible.
- the host can transmit the difference encoding information and the left-eye image data frame to the head-mounted display through a wired transmission channel, such as a wired transmission channel such as HDMI, Display Port, USB Type-C, etc.; the host can pass the wireless transmission channel, for example, at 60 GHz.
- the band of the wave wirelessly transmits the difference encoding information and the left eye image data frame to the head mounted display.
- the embodiment does not limit that the host can only transmit the difference encoding information and the left-eye image data frame, and can also transmit the difference encoding information and the right-eye image data frame.
- This embodiment is only for convenience of description, and exemplary.
- the difference difference coding information and the left eye image data frame are transmitted as an example for description.
- the following embodiments of the present application are described by taking a case where the host transmits the difference encoding information and the left-eye image data frame to the head mounted display of the virtual reality device.
- the host of the virtual reality device compares the left eye image data frame to be transmitted with the corresponding right eye image data frame to obtain difference information between the binocular image data frames, and does not need to perform a frame with high complexity.
- the difference information between the binocular image data frames can be obtained only by simple subtraction operation, and the difference information is compression-encoded by a simple coding rule, so that the host only needs to transmit the difference coding information and one eye.
- the image data frame reduces the bandwidth occupied by the image data transmission, further reducing the delay and improving the user experience.
- the image data transmission bandwidth can be reduced by increasing the compression ratio and the transmission efficiency of the image data between the host of the virtual reality device and the head mounted display can be improved while ensuring low latency.
- FIG. 2 is a flowchart of a method for processing image data applied to a head mounted display according to an embodiment of the present disclosure.
- the method is applied to a head mounted display of a virtual reality device.
- the method in this embodiment is particularly applicable to a method of wireless connection.
- the method for processing image data in this embodiment includes:
- S210 Receive difference encoding information and a left-eye image data frame sent by a host of the virtual reality device, where the difference encoding information is a difference encoding information between a left-eye image data frame and a right-eye image data frame to be transmitted. Obtained after compression coding.
- the preset decoding rule in this embodiment corresponds to the preset encoding rule. If the host uses the run length encoding rule to compress and encode the difference information, the head mounted display decompresses the difference encoding information by using the corresponding run length decoding rule.
- the difference information of the embodiment is obtained by making a difference between the left eye image data frame and the corresponding right eye image data frame, corresponding to this step, the left eye image data frame and the difference information may be summed to obtain a right eye image data frame.
- the step is specifically: searching for the pixel value corresponding to the left eye image data frame and the difference information. And, get the right eye image data frame.
- the head-mounted display of the embodiment decodes the difference encoding information sent by the host to obtain difference information, and constructs a right-eye image data frame by simply adding the difference information and the received left-eye image data frame to construct a right eye.
- the image data frame can output and display the image data.
- the head-mounted display only needs to perform simple decoding processing and addition operation on the received data, and the calculation complexity is low, and the required processing time is extremely short, thereby reducing the delay of data display and improving the user experience.
- the present invention also provides an embodiment of a processing apparatus for image data.
- FIG. 3 is a functional block diagram of a processing device for applying image data to a transmitting end of a host according to an embodiment of the present invention.
- the processing device is applied to a host of a virtual reality device, and is particularly suitable for a host that performs data transmission with a head mounted display through a wireless connection. .
- the image data processing apparatus of this embodiment includes: a difference obtaining unit 31, an encoding unit 32, and a transmitting unit 33;
- the difference obtaining unit 31 is configured to respectively acquire a left eye image data frame to be transmitted and a corresponding right eye image data frame, and perform a difference between the acquired left eye image data frame and the corresponding right eye image data frame to obtain binocular image data. Difference information between frames;
- the difference obtaining unit 31 is specifically configured to compare the pixel values of the left eye image data frame and the right eye image data frame to obtain difference information between the binocular image data frames;
- the encoding unit 32 is configured to compress and encode the difference information by using a preset encoding rule to obtain compressed difference encoding information.
- encoding unit 32 compresses and encodes the difference information using a relatively simple compression encoding method, such as run length encoding or entropy encoding rules, in order to quickly compress and decompress the difference information, such that the delay generated by the compression and decompression process Ignorable.
- a relatively simple compression encoding method such as run length encoding or entropy encoding rules
- the transmitting unit 33 is configured to send the difference encoding information and the left eye image data frame to the head mounted display of the virtual reality device.
- the host of the virtual reality device compares the left eye image data frame to be transmitted with the corresponding right eye image data frame to obtain difference information between the binocular image data frames, and does not need to perform a frame with high complexity.
- the difference information between the binocular image data frames can be obtained only by simple subtraction operation, and the difference information is compression-encoded by a simple coding rule, so that the host only needs to transmit the difference coding information and one eye.
- the image data frame reduces the bandwidth occupied by the image data transmission, further reducing the delay and improving the user experience.
- FIG. 4 is a functional block diagram of a processing device for image data applied to a head mounted display according to an embodiment of the present invention.
- the processing device is applied to a head mounted display of a virtual reality device, and is particularly suitable for data transmission with a host through a wireless connection. Head-mounted display.
- the processing apparatus for image data of this embodiment includes: a receiving unit 41, a decoding unit 42, a calculating unit 43, and a display unit 44;
- the receiving unit 41 is configured to receive the difference encoding information and the left eye image data frame sent by the host of the virtual reality device, where the difference encoding information is a difference information between the left eye image data frame and the right eye image data frame to be transmitted.
- the preset encoding rule is obtained after compression coding;
- the decoding unit 42 is configured to decompress the difference encoding information according to the preset decoding rule to obtain the difference information, where the preset decoding rule corresponds to the preset encoding rule;
- the calculating unit 43 is configured to obtain a corresponding right eye image data frame according to the difference information and the received left eye image data frame;
- the calculating unit 43 is specifically configured to sum the left eye image data frame and the difference information to obtain the right eye image data frame.
- the display unit 44 is configured to display the left eye image data frame and the right eye image data frame.
- the head-mounted display of the embodiment decodes the difference encoding information sent by the host to obtain difference information, and constructs a right-eye image data frame by simply adding the difference information and the received left-eye image data frame to construct a right eye.
- the image data frame can output and display the image data.
- the head-mounted display only needs to perform simple decoding processing and addition operation on the received data, and the calculation complexity is low, and the required processing time is extremely short, thereby reducing the delay of data display and improving the user experience.
- the present invention also provides an embodiment of a processing apparatus for image data.
- FIG. 5 is a structural block diagram of an apparatus for processing image data applied to a transmitting end of a host according to an embodiment of the present invention.
- the image data processing apparatus includes a machine readable storage medium 51 and a processor 52, and is readable by a machine.
- the storage medium 51 and the processor 52 are communicatively coupled by an internal bus 53, which stores a computer program executable by the processor 52, which when executed by the processor 52 causes the following steps to be implemented:
- the difference information is compression-encoded by using a preset encoding rule to obtain compressed difference encoding information
- the difference encoding information and the left eye image data frame are transmitted to the head mounted display of the virtual reality device; or the difference encoding information and the right eye image data frame are transmitted to the head mounted display of the virtual reality device.
- performing the difference between the separately acquired left-eye image data frame and the corresponding right-eye image data frame includes: performing difference between corresponding pixel values in the left-eye image data frame and the right-eye image data frame to obtain a binocular image data frame. The difference between the information.
- compressing the difference information by using a preset encoding rule comprises: compressing and encoding the difference information by using a run length encoding or an entropy encoding rule.
- FIG. 6 is a structural block diagram of a processing apparatus for image data applied to a head mounted display according to an embodiment of the present invention.
- the image data processing apparatus includes a machine readable storage medium 61 and a processor 62.
- the read storage medium 61 and the processor 62 are communicatively coupled by an internal bus 63.
- the machine readable storage medium 61 stores a computer program executable by the processor 62, which when executed by the processor 62 causes the following steps to be implemented:
- the left eye image data frame and the right eye image data frame are displayed.
- the difference information is obtained by making a difference between corresponding pixel values in the left eye image data frame and the right eye image data frame.
- obtaining the corresponding right eye image data frame according to the difference information and the received left eye image data frame comprises: summing the left eye image data frame and the pixel value corresponding to the difference information to obtain a right eye image data frame.
- the machine readable storage medium 51, 61 can be a memory or a non-volatile memory.
- the non-volatile memory may be: a storage drive (such as a hard drive), a solid state drive, any type of storage disk (such as a compact disc, a DVD, etc.), or a similar storage medium, or a combination thereof.
- the memory can be: RAM (Radom Access Memory), volatile memory, non-volatile memory, flash memory.
- the non-volatile memory and memory are machine-readable storage media on which the computer programs executed by the processors 52, 62 can be stored.
- the processing apparatus of the image data in this embodiment corresponds to the processing method of the foregoing image data. Therefore, the portion of the image data processing apparatus that is not described in this embodiment can be referred to the aforementioned image data of the present invention. The related description of the processing method embodiment is not described here.
- the technical solution of the embodiment of the present invention performs a difference between the left eye image data frame to be transmitted and the corresponding right eye image data frame on the host of the virtual reality device to obtain difference information between the binocular image data frames. It is not necessary to perform motion estimation of inter-frame redundant information with higher complexity, and the difference information between the binocular image data frames can be obtained only by simple subtraction operation, and the difference information is compression-encoded by a simple coding rule, so that the host only The difference encoding information and the image data frame of one eye need to be transmitted, and the bandwidth occupied by the image data transmission is reduced, and the delay is further reduced.
- the technical solution of the embodiment of the present invention is different in the head-mounted display, and the difference encoding information sent by the host is decoded.
- Information by simply adding the difference information and the received left eye image data frame, another eye image data frame can be constructed, and the image data frame can be output and displayed after the image data frame is constructed; the head mounted display only Need to perform simple decoding processing and addition operation on the received data, the calculation complexity is low, and the required The processing time is very short, it is possible to reduce the delay of data, improving the user experience.
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Abstract
本发明公开了一种图像数据的处理方法和装置。该方法包括：虚拟现实设备的主机将获取的左眼图像数据帧和右眼图像数据帧作差得到差异信息，对该差异信息进行压缩编码后将差异编码信息和左眼或右眼图像数据帧发送至头戴显示器；头戴显示器接收差异编码信息和左眼或右眼图像数据帧，解压缩差异编码信息，利用差异信息和接收到的左眼或右眼图像数据帧得到相应的右眼或左眼图像数据帧，以对左眼图像数据帧和右眼图像数据帧进行显示。处理装置包括应用于主机的差异获取单元、编码单元和发送单元，以及包括应用于头戴显示器的接收单元、解码单元、计算单元和显示单元。本发明能够在低时延的情况下，降低数据传输带宽，提高虚拟现实设备的传输效率。
Description
本发明涉及数据传输技术领域，具体涉及一种图像数据的处理方法和装置。
虚拟显示设备(Virtual Reality，VR)通常包括主机和显示器，VR的主机与显示器之间通常采用有线或无线的方式连接。随着物质生活水平的提高，人们越来越追求大显示屏大视场角的视觉体验，市场上VR的显示器通常具有较大的视场角(field of vision，FOV)，如能够达到120°、150°，那么在主机传送图像数据、视频数据等大数据量时，会有较大的时延。
以显示刷新率为90Hz的单眼1K(1200*1080)的显示屏幕为例，1个像素点用24bit表示，则需要传送1200*1080*2(双眼)*90*24＝5.6G bit/s的图像数据，如此大的图像数据传输需要占用较大的带宽，当VR的主机与显示器之间采用无线传输方式时则需要对数据进行压缩和解压缩，这将导致时延过大，而时延则是影响VR体验的关键因素。
发明内容
本发明提供了一种图像数据的处理方法和装置，以解决VR的主机与显示器之间进行数据传输时存在较大时延的问题。
根据本发明的一个方面，本发明提供了一种图像数据的处理方法，应用于虚拟现实设备的主机，该方法包括：
分别获取待传输的左眼图像数据帧和对应的右眼图像数据帧，并将分别获取的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息；
利用预设编码规则对该差异信息进行压缩编码，得到压缩的差异编码信息；
将差异编码信息和左眼图像数据帧发送至虚拟现实设备的头戴显示器；或者，将差异编码信息和右眼图像数据帧发送至虚拟现实设备的头戴显示器。
本发明还提供了一种图像数据的处理方法，应用于虚拟现实设备的头戴显示器，该方法包括：
接收虚拟现实设备的主机发送的差异编码信息和左眼图像数据帧，或者，接收主机发送 的差异编码信息和右眼图像数据帧；其中，差异编码信息是待传输的左眼图像数据帧和右眼图像数据帧之间的差异信息经过预设编码规则压缩编码后得到；
根据预设解码规则解压缩差异编码信息，得到差异信息；
根据差异信息和接收到的左眼图像数据帧得到相应的右眼图像数据帧，或者，根据差异信息和接收到的右眼图像数据帧得到相应的左眼图像数据帧；
对左眼图像数据帧和右眼图像数据帧进行显示。
根据本发明的另一个方面，本发明提供一种图像数据的处理装置，应用于虚拟现实设备的主机，该装置包括：
差异获取单元，用于分别获取待传输的左眼图像数据帧和对应的右眼图像数据帧，并将获取的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息；
编码单元，用于利用预设编码规则对该差异信息进行压缩编码，得到压缩的差异编码信息；
发送单元，用于将差异编码信息和左眼图像数据帧发送至虚拟现实设备的头戴显示器；或者，将差异编码信息和右眼图像数据帧发送至虚拟现实设备的头戴显示器。
本发明还提供了一种图像数据的处理装置，应用于虚拟现实设备的头戴显示器，该装置包括：
接收单元，用于接收虚拟现实设备的主机发送的差异编码信息和左眼图像数据帧，或者，接收主机发送的差异编码信息和右眼图像数据帧；其中，差异编码信息是待传输的左眼图像数据帧和右眼图像数据帧之间的差异信息经过预设编码规则压缩编码后得到；
解码单元，用于根据预设解码规则解压缩所述差异编码信息，得到差异信息；
计算单元，用于根据差异信息和接收到的左眼图像数据帧得到相应的右眼图像数据帧，或者，根据差异信息和接收到的右眼图像数据帧得到相应的左眼图像数据帧；
显示单元，用于对左眼图像数据帧和右眼图像数据帧进行显示。
根据本发明的另一个方面，本发明提供了一种图像数据的处理装置，应用于虚拟现实设备的主机，该装置包括机器可读存储介质和处理器，机器可读存储介质和处理器之间通过内部总线通讯连接，机器可读存储介质存储有能够被处理器执行的计算机程序，计算机程序被处理器执行时促使实现上述的方法步骤。
本发明还提供了一种图像数据的处理装置，应用于虚拟现实设备的头戴显示器，该装置包括机器可读存储介质和处理器，机器可读存储介质和处理器之间通过内部总线通讯连接， 机器可读存储介质存储有能够被处理器执行的计算机程序，计算机程序被处理器执行时促使实现上述的方法步骤。
本发明的有益效果是：本发明在虚拟现实设备的主机，将待传输的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息，不需要进行复杂度较高的帧间冗余信息运动估计，仅通过简单的减法运算即可获得双眼图像数据帧之间的差异信息，利用简单的编码规则对差异信息进行压缩编码，使主机仅需传输差异编码信息和一只眼的图像数据帧，降低图像数据传输所占用的带宽，进一步减少时延；本发明的头戴显示器对主机发送的差异编码信息解码得到差异信息，通过对差异信息和接收到的左眼图像数据帧进行简单的加法运算即可构建另一只眼图像数据帧，构建好图像数据帧后即可对图像数据进行输出显示；头戴显示器仅需要对接收到的数据进行简单的解码处理和加法运算，计算复杂度较低，所需要的处理时间极短，因此可以减少数据显示的时延，提高用户体验。
为了更清楚地说明本发明实施例或现有技术中的技术方案，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发明的一些实施例，对于本领域普通技术人员来讲，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它的附图。
图1为本发明实施例提供的应用于主机发送端的图像数据的处理方法流程图；
图2为本发明实施例提供的应用于头戴显示器的图像数据的处理方法流程图；
图3为本发明实施例提供的应用于主机发送端的图像数据的处理装置功能框图；
图4为本发明实施例提供的应用于头戴显示器的图像数据的处理装置功能框图；
图5为本发明实施例提供的应用于主机发送端的图像数据的处理装置的结构框图；
图6为本发明实施例提供的应用于头戴显示器的图像数据的处理装置的结构框图。
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。应当明确，下述所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
视频压缩算法中一种常见的技术手段是帧间预测，利用处于时间轴上的同一视频序列前后两帧的帧间冗余信息进行运动估计，再采用压缩编码来进行压缩的。但是对于虚拟现实设备，系统时延是非常重要的指标，典型的视频压缩算法因为计算复杂度较高会引起不可忽略的时延。本发明实施例针对上述情况，提供了一种图像数据的处理方法。
图1为本发明实施例提供的应用于主机发送端的图像数据的处理方法流程图，该处理方法应用于虚拟现实设备的主机，尤其适用于通过无线连接的方式与头戴显示器进行数据传输的主机。
如图1所示，本实施例图像数据的处理方法包括：
S110，分别获取待传输的左眼图像数据帧和对应的右眼图像数据帧，并将分别获取的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息。
示例性地，可将左眼图像数据帧和右眼图像数据帧中对应的像素值，如RGB值做差，得到双眼图像数据帧之间的差异信息。
S120，利用预设编码规则对该差异信息进行压缩编码，得到压缩的差异编码信息。
左右眼图像数据帧做差后得到的差异信息主要为双眼图像数据之间的近景差异信息，为降低图像数据的传输过程占用的带宽，可以利用较为简单的压缩编码方法，如游程编码或熵编码规则对上述差异信息进行压缩编码，以便于快速压缩、解压缩差异信息，使得由压缩和解压缩过程产生的延时可忽略。
S130，将差异编码信息和左眼图像数据帧发送至虚拟现实设备的头戴显示器。
其中，主机可通过有线传输通道，如HDMI，Display Port，USB Type-C等有线传输通道将差异编码信息和左眼图像数据帧发送给头戴显示器；主机可以通过无线传输通道，如以60GHz毫米波的波段将差异编码信息和左眼图像数据帧无线发送给头戴显示器。
可以理解的是，本实施例并不限定主机只能传输差异编码信息和左眼图像数据帧，也可以传输差异编码信息和右眼图像数据帧，本实施例仅是为了便于描述，示例性的以传输差异编码信息和左眼图像数据帧为例进行说明。为便于描述，本申请的下述实施例中均以主机将差异编码信息和左眼图像数据帧发送至虚拟现实设备的头戴显示器为例进行说明。
本实施例在虚拟现实设备的主机，将待传输的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息，不需要进行复杂度较高的帧间冗余信息运动估计，仅通过简单的减法运算即可获得双眼图像数据帧之间的差异信息，利用简单的编码规则对差异信息进行压缩编码，使主机仅需传输差异编码信息和一只眼的图像数据帧，降低图像 数据传输所占用的带宽，进一步减少时延，提高用户体验。
本实施例能够在保证低时延的情况下，通过提高压缩比，降低图像数据传输带宽，提高虚拟现实设备的主机和头戴显示器之间图像数据的传输效率。
图2为本发明实施例提供的应用于头戴显示器的图像数据的处理方法流程图，该处理方法应用于虚拟现实设备的头戴显示器，本实施例的方法尤其适用于通过无线连接的方式与虚拟现实设备的主机进行数据传输的头戴显示器。如图2所示，本实施例图像数据的处理方法包括：
S210，接收虚拟现实设备的主机发送的差异编码信息和左眼图像数据帧，其中，差异编码信息是待传输的左眼图像数据帧和右眼图像数据帧之间的差异信息经过预设编码规则压缩编码后得到。
S220，根据预设解码规则解压缩差异编码信息，得到差异信息。
本实施例的预设解码规则与预设编码规则相对应，若主机采用游程编码规则对差异信息进行压缩编码，则头戴显示器用相应的游程解码规则对差异编码信息解压缩。
S230，根据差异信息和接收到的左眼图像数据帧得到相应的右眼图像数据帧。
由于本实施例的差异信息为将左眼图像数据帧和对应的右眼图像数据帧作差得到，本步骤相应的，可将左眼图像数据帧和差异信息求和得到右眼图像数据帧。
示例性地，在通过对左眼图像数据帧和右眼图像数据帧中对应的像素值做差得到该差异信息时，本步骤具体为：将左眼图像数据帧和差异信息对应的像素值求和，得到右眼图像数据帧。
S240，对左眼图像数据帧和右眼图像数据帧进行显示。
本实施例的头戴显示器对主机发送的差异编码信息解码得到差异信息，通过对差异信息和接收到的左眼图像数据帧进行简单的加法运算即可构建右眼图像数据帧，构建好右眼图像数据帧即可对图像数据进行输出显示。头戴显示器仅需要对接收到的数据进行简单的解码处理和加法运算，计算复杂度较低，所需要的处理时间极短，因此可以减少数据显示的时延，提高用户体验。
与前述图像数据的处理方法实施例相对应的，本发明还提供了一种图像数据的处理装置实施例。
图3为本发明实施例提供的应用于主机发送端的图像数据的处理装置功能框图，该处理装置应用于虚拟现实设备的主机，尤其适用于通过无线连接的方式与头戴显示器进行数据传 输的主机。
如图3所示，本实施例图像数据的处理装置包括：差异获取单元31、编码单元32和发送单元33；
差异获取单元31，用于分别获取待传输的左眼图像数据帧和对应的右眼图像数据帧，并将获取的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息；
示例性地，差异获取单元31，具体是用于将左眼图像数据帧和右眼图像数据帧中对应的像素值做差，得到双眼图像数据帧之间的差异信息；
编码单元32，用于利用预设编码规则对该差异信息进行压缩编码，得到压缩的差异编码信息。
示例性地，编码单元32利用较为简单的压缩编码方法，如游程编码或熵编码规则对上述差异信息进行压缩编码，以便于快速压缩、解压缩差异信息，使得由压缩和解压缩过程产生的延时可忽略。
发送单元33，用于将差异编码信息和左眼图像数据帧发送至虚拟现实设备的头戴显示器。
本实施例在虚拟现实设备的主机，将待传输的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息，不需要进行复杂度较高的帧间冗余信息运动估计，仅通过简单的减法运算即可获得双眼图像数据帧之间的差异信息，利用简单的编码规则对差异信息进行压缩编码，使主机仅需传输差异编码信息和一只眼的图像数据帧，降低图像数据传输所占用的带宽，进一步减少时延，提高用户体验。
图4为本发明实施例提供的应用于头戴显示器的图像数据的处理装置功能框图，该处理装置应用于虚拟现实设备的头戴显示器，尤其适用于通过无线连接的方式与主机进行数据传输的头戴显示器。
如图4所示，本实施例图像数据的处理装置包括：接收单元41、解码单元42、计算单元43和显示单元44；
接收单元41，用于接收虚拟现实设备的主机发送的差异编码信息和左眼图像数据帧，其中，差异编码信息是待传输的左眼图像数据帧和右眼图像数据帧之间的差异信息经过预设编码规则压缩编码后得到；
解码单元42，用于根据预设解码规则解压缩差异编码信息，得到差异信息；其中，预设解码规则与预设编码规则相对应；
计算单元43，用于根据差异信息和接收到的左眼图像数据帧得到相应的右眼图像数据帧；
示例性地，计算单元43，具体用于将左眼图像数据帧和差异信息求和得到所述右眼图像数据帧。
显示单元44，用于对左眼图像数据帧和右眼图像数据帧进行显示。
本实施例的头戴显示器对主机发送的差异编码信息解码得到差异信息，通过对差异信息和接收到的左眼图像数据帧进行简单的加法运算即可构建右眼图像数据帧，构建好右眼图像数据帧即可对图像数据进行输出显示。头戴显示器仅需要对接收到的数据进行简单的解码处理和加法运算，计算复杂度较低，所需要的处理时间极短，因此可以减少数据显示的时延，提高用户体验。
与前述图像数据的处理方法实施例相对应的，本发明还提供了一种图像数据的处理装置实施例。
图5为本发明实施例提供的应用于主机发送端的图像数据的处理装置的结构框图，如图5所示，该图像数据的处理装置包括机器可读存储介质51和处理器52，机器可读存储介质51和处理器52之间通过内部总线53通讯连接，机器可读存储介质51存储有能够被处理器52执行的计算机程序，该计算机程序被处理器52执行时促使实现如下步骤：
分别获取待传输的左眼图像数据帧和对应的右眼图像数据帧，并将分别获取的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息；
利用预设编码规则对该差异信息进行压缩编码，得到压缩的差异编码信息；
将差异编码信息和左眼图像数据帧发送至虚拟现实设备的头戴显示器；或者，将差异编码信息和右眼图像数据帧发送至虚拟现实设备的头戴显示器。
可选地，将分别获取的左眼图像数据帧和对应的右眼图像数据帧作差包括：将左眼图像数据帧和右眼图像数据帧中对应的像素值做差，得到双眼图像数据帧之间的差异信息。
可选地，利用预设编码规则对该差异信息进行压缩编码包括：利用游程编码或熵编码规则对所述差异信息进行压缩编码。
图6为本发明实施例提供的应用于头戴显示器的图像数据的处理装置的结构框图，如图6所示，该图像数据的处理装置包括机器可读存储介质61和处理器62，机器可读存储介质61和处理器62之间通过内部总线63通讯连接，机器可读存储介质61存储有能够被处理器62执行的计算机程序，该计算机程序被处理器62执行时促使实现如下步骤：
接收虚拟现实设备的主机发送的差异编码信息和左眼图像数据帧，或者，接收主机发送的差异编码信息和右眼图像数据帧；其中，差异编码信息是待传输的左眼图像数据帧和右眼图像数据帧之间的差异信息经过预设编码规则压缩编码后得到；
根据预设解码规则解压缩差异编码信息，得到差异信息；
根据差异信息和接收到的左眼图像数据帧得到相应的右眼图像数据帧，或者，根据差异信息和接收到的右眼图像数据帧得到相应的左眼图像数据帧；
对左眼图像数据帧和右眼图像数据帧进行显示。
可选地，差异信息通过对左眼图像数据帧和右眼图像数据帧中对应的像素值做差得到。
可选地，根据差异信息和接收到的左眼图像数据帧得到相应的右眼图像数据帧包括：将左眼图像数据帧和差异信息对应的像素值求和，得到右眼图像数据帧。
在不同的实施例中，机器可读存储介质51，61可以是内存或者非易失性存储器。其中非易失性存储器可以是：存储驱动器(如硬盘驱动器)、固态硬盘、任何类型的存储盘(如光盘、DVD等)，或者类似的存储介质，或者它们的组合。内存可以是：RAM(Radom Access Memory，随机存取存储器)、易失存储器、非易失性存储器、闪存。进一步，非易失性存储器和内存作为机器可读存储介质，其上可存储由处理器52，62执行的计算机程序。
需要说明的是，本实施例中的图像数据的处理装置是与前述图像数据的处理方法相对应的，因而本实施例中对图像数据的处理装置没有描述的部分可以参见本发明前述图像数据的处理方法实施例的相关说明，这里不再赘述。
综上所述，本发明实施例的技术方案在虚拟现实设备的主机，将待传输的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息，不需要进行复杂度较高的帧间冗余信息运动估计，仅通过简单的减法运算即可获得双眼图像数据帧之间的差异信息，利用简单的编码规则对差异信息进行压缩编码，使主机仅需传输差异编码信息和一只眼的图像数据帧，降低图像数据传输所占用的带宽，进一步减少时延；本发明实施例的技术方案在头戴显示器，对主机发送的差异编码信息解码得到差异信息，通过对差异信息和接收到的左眼图像数据帧进行简单的加法运算即可构建另一只眼图像数据帧，构建好图像数据帧后即可对图像数据进行输出显示；头戴显示器仅需要对接收到的数据进行简单的解码处理和加法运算，计算复杂度较低，所需要的处理时间极短，因此可以减少数据显示的时延，提高用户体验。
以上所述，仅为本发明的具体实施方式，在本发明的上述教导下，本领域技术人员可以 在上述实施例的基础上进行其他的改进或变形。本领域技术人员应该明白，上述的具体描述只是更好的解释本发明的目的，本发明的保护范围应以权利要求的保护范围为准。
Claims (14)
- 一种图像数据的处理方法，应用于虚拟现实设备的主机，所述方法包括：分别获取待传输的左眼图像数据帧和对应的右眼图像数据帧，并将分别获取的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息；利用预设编码规则对该差异信息进行压缩编码，得到压缩的差异编码信息；将所述差异编码信息和所述左眼图像数据帧发送至虚拟现实设备的头戴显示器；或者，将所述差异编码信息和所述右眼图像数据帧发送至虚拟现实设备的头戴显示器。
- 根据权利要求1所述的图像数据的处理方法，其中，所述将分别获取的左眼图像数据帧和对应的右眼图像数据帧作差包括：将左眼图像数据帧和右眼图像数据帧中对应的像素值做差，得到双眼图像数据帧之间的差异信息。
- 根据权利要求1所述的图像数据的处理方法，其中，所述利用预设编码规则对该差异信息进行压缩编码包括：利用游程编码或熵编码规则对所述差异信息进行压缩编码。
- 一种图像数据的处理方法，应用于虚拟现实设备的头戴显示器，所述方法包括：接收虚拟现实设备的主机发送的差异编码信息和左眼图像数据帧，或者，接收所述主机发送的差异编码信息和右眼图像数据帧；其中，差异编码信息是待传输的左眼图像数据帧和右眼图像数据帧之间的差异信息经过预设编码规则压缩编码后得到；根据预设解码规则解压缩所述差异编码信息，得到所述差异信息；根据所述差异信息和接收到的左眼图像数据帧得到相应的右眼图像数据帧，或者，根据所述差异信息和接收到的右眼图像数据帧得到相应的左眼图像数据帧；对所述左眼图像数据帧和右眼图像数据帧进行显示。
- 根据权利要求4所述的图像数据的处理方法，其中，所述差异信息通过 对左眼图像数据帧和右眼图像数据帧中对应的像素值做差得到。
- 根据权利要求5所述的图像数据的处理方法，其中，所述根据所述差异信息和接收到的左眼图像数据帧得到相应的右眼图像数据帧包括：将所述左眼图像数据帧和所述差异信息对应的像素值求和，得到所述右眼图像数据帧。
- 一种图像数据的处理装置，应用于虚拟现实设备的主机，所述装置包括：差异获取单元，用于分别获取待传输的左眼图像数据帧和对应的右眼图像数据帧，并将获取的左眼图像数据帧和对应的右眼图像数据帧作差，得到双眼图像数据帧之间的差异信息；编码单元，用于利用预设编码规则对该差异信息进行压缩编码，得到压缩的差异编码信息；发送单元，用于将所述差异编码信息和所述左眼图像数据帧发送至虚拟现实设备的头戴显示器；或者，将所述差异编码信息和所述右眼图像数据帧发送至虚拟现实设备的头戴显示器。
- 根据权利要求7所述的图像数据的处理装置，其中，所述差异获取单元，具体用于将左眼图像数据帧和右眼图像数据帧中对应的像素值做差，得到双眼图像数据帧之间的差异信息。
- 根据权利要求7所述的图像数据的处理装置，其中，所述编码单元，具体用于利用游程编码或熵编码规则对所述差异信息进行压缩编码。
- 一种图像数据的处理装置，应用于虚拟现实设备的头戴显示器，所述装置包括：接收单元，用于接收虚拟现实设备的主机发送的差异编码信息和左眼图像数据帧，或者，接收所述主机发送的差异编码信息和右眼图像数据帧；其中，差异编码信息是待传输的左眼图像数据帧和右眼图像数据帧之间的差异信息经过预设编码规则压缩编码后得到；解码单元，用于根据预设解码规则解压缩所述差异编码信息，得到所述差异信息；计算单元，用于根据所述差异信息和接收到的左眼图像数据帧得到相应的右 眼图像数据帧，或者，根据所述差异信息和接收到的右眼图像数据帧得到相应的左眼图像数据帧；显示单元，用于对所述左眼图像数据帧和右眼图像数据帧进行显示。
- 根据权利要求10所述的图像数据的处理装置，其中，所述计算单元，具体用于将所述左眼图像数据帧和所述差异信息求和，得到所述右眼图像数据帧。
- 根据权利要求10所述的图像数据的处理装置，其中，所述差异信息通过对左眼图像数据帧和右眼图像数据帧中对应的像素值做差得到。
- 一种图像数据的处理装置，应用于虚拟现实设备的主机，所述装置包括机器可读存储介质和处理器，所述机器可读存储介质和所述处理器之间通过内部总线通讯连接，所述机器可读存储介质存储有能够被所述处理器执行的计算机程序，所述计算机程序被所述处理器执行时促使实现权利要求1-3中任一所述的步骤。
- 一种图像数据的处理装置，应用于虚拟现实设备的头戴显示器，所述装置包括机器可读存储介质和处理器，所述机器可读存储介质和所述处理器之间通过内部总线通讯连接，所述机器可读存储介质存储有能够被所述处理器执行的计算机程序，所述计算机程序被所述处理器执行时促使实现权利要求4-6中任一所述的步骤。
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| CN113141494A (zh) * | 2020-01-20 | 2021-07-20 | 北京芯海视界三维科技有限公司 | 3d图像处理方法、装置和3d显示终端 |
| CN112383765B (zh) * | 2020-11-10 | 2023-04-07 | 中移雄安信息通信科技有限公司 | 一种vr图像传输方法及装置 |
| CN116016885A (zh) * | 2021-10-21 | 2023-04-25 | 中兴通讯股份有限公司 | 图像处理方法、云服务器、vr终端、存储介质 |
| GB2620655B (en) * | 2022-11-02 | 2024-09-11 | V Nova Int Ltd | Image processing using residual frames and differential frames |
| CN119922312A (zh) * | 2023-10-31 | 2025-05-02 | 海信视像科技股份有限公司 | 基于双路视频流的图像显示方法及设备 |
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