WO2019090904A1 - 确定距离的方法、装置、设备及存储介质 - Google Patents
确定距离的方法、装置、设备及存储介质 Download PDFInfo
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- the present invention relates to the field of machine learning technology, and in particular, to a method, an apparatus, a device, and a storage medium for determining a distance.
- Smart devices have become an indispensable item in people's lives. Users can realize various needs through various functions of smart devices, such as shopping needs, teaching needs, and painting needs.
- the smart device can monitor the user's usage status in real time to better serve the user according to the usage state. For example, the smart device determines the distance between the user and the smart device in real time, and confirms whether the user is too close or too far from the smart device through the distance, so as to remind the user to ensure that the user uses the smart device within an appropriate distance range.
- the distance between the user and the smart device is usually determined by installing a distance sensor in the smart device. In general, when measuring the distance by the distance sensor, it is usually only possible to measure the distance within a certain range and there is a measurement error, which may result in an inaccurate distance of the smart device, thereby making the smart device unable to serve the user better.
- the embodiments of the present invention provide a method, a device, a device, and a storage medium for determining a distance, so as to solve the technical problem that the existing distance determining solution cannot accurately obtain the distance between the user and the smart device.
- an embodiment of the present invention provides a method for determining a distance, including:
- the embodiment of the present invention further provides an apparatus for determining a distance, including:
- a data acquisition module configured to acquire image data of an unknown distance user collected by the camera
- a distance recognition module configured to identify image data of the unknown distance user by using a distance model, and determine an actual distance between the unknown distance user and a device to which the camera belongs according to the recognition result, wherein the distance model is based on The image data of the distance user is determined by training.
- an embodiment of the present invention further provides an apparatus, including:
- One or more processors are One or more processors;
- a memory for storing one or more programs
- a camera for acquiring image data
- the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement a method of determining a distance as described in an embodiment of the present invention.
- an embodiment of the present invention further provides a storage medium including computer executable instructions for performing a method for determining a distance according to an embodiment of the present invention when executed by a computer processor. .
- the method, device, device and storage medium for determining a distance provided by the above are used to identify image data of an unknown distance user collected by a camera by using a distance model, wherein the distance model is determined based on training of image data of a known distance user, According to the recognition result, the technical solution of determining the actual distance between the unknown distance user and the device to which the camera belongs is realized, and the method of establishing the distance model by machine learning is realized, and the actual distance between the user and the device is obtained quickly and accurately.
- FIG. 1 is a flowchart of a method for determining a distance according to Embodiment 1 of the present invention
- FIG. 2 is a flowchart of a method for determining a distance according to Embodiment 2 of the present invention
- FIG. 3 is a flowchart of a method for determining a distance according to Embodiment 3 of the present invention.
- FIG. 4 is a schematic structural diagram of an apparatus for determining a distance according to Embodiment 4 of the present invention.
- FIG. 5 is a schematic structural diagram of a device according to Embodiment 5 of the present invention.
- FIG. 1 is a flowchart of a method for determining a distance according to Embodiment 1 of the present invention.
- the method for determining the distance provided by this embodiment may be performed by a device for determining a distance, and the device for determining the distance may be implemented by software and/or manner and integrated in the device.
- the device comprises at least one camera, and the camera may be a front camera or a rear camera.
- the device may be an intelligent device such as an interactive smart tablet or a smart phone.
- the method provided in this embodiment specifically includes:
- the unknown distance user is the user who currently needs to know the actual distance from the device.
- the image data is data determined based on an image containing the user, which is a typical parameter that determines the actual distance between the user and the device.
- the image data may be pixel point data related to the user in the image, for example, the image data may be the ratio data of the pixel point where the user is located and all the pixel points of the image; or may be the first pixel included in the display area of the user's head.
- the total number of points it can also be the total number of second pixels in the vertical direction between the user's eyes and the lower boundary of the image.
- only one frame of image currently acquired by the camera may be acquired without taking a picture, and image data is determined according to the image.
- image data is determined according to the image.
- the advantage of this is that the current latest image data can be obtained in real time when the user moves, and the real-time performance of the image data is ensured.
- This scheme is suitable for a scene with high real-time requirements for image data.
- the advantage of this is that it only needs to determine the image data in one photo, which reduces the amount of data processing.
- This scheme is suitable for scenes with low real-time requirements on image data.
- the format of the image captured by the camera is not limited, such as the JPEG format.
- the greater the resolution of the camera the more pixels are obtained by acquiring the image, and the more accurate the corresponding image data is.
- cameras of different resolutions can be selected according to user requirements. For example, in this embodiment, a camera with a resolution of 3264 ⁇ 2448 is used, and an image of 3264 ⁇ 2448 pixels can be obtained.
- S120 Identify, by using a distance model, image data of an unknown distance user, and determine an actual distance between the unknown distance user and the device to which the camera belongs according to the recognition result.
- the distance model is determined based on the training of the image data of the known distance user, and the process of training the distance model is a process of machine learning.
- the image data of the distance model training is the same type of data as the image data acquired in S110. Further, according to the distance model, the actual distance between the different unknown distance users and the device to which the camera belongs can be determined.
- the specific content of the actual distance can be set according to the actual situation, and the priority is the user's eye.
- the actual distance between the eye and the device to which the camera belongs may include the distance from the user's eyes to the camera, and may also include the vertical distance from the user's eyes to the horizontal plane at the bottom of the device.
- different image data can determine different actual distances.
- the actual distance is the vertical distance from the user's eyes to the horizontal plane of the bottom edge of the device
- the required image data may be the total number of second pixels in the vertical direction between the user's eyes and the lower boundary of the image.
- the image data employed is the total number of second pixels in the vertical direction between the eye of the user and the lower boundary of the image.
- the image when the image is captured by the camera, if the image includes multiple unknown distance users, the image data of each unknown distance user is separately determined, and the image data of each unknown distance user is identified by using the distance model, according to The recognition result determines the actual distance between each unknown distance user and the device to which the camera belongs.
- the device to which the camera belongs may be different from the device that performs the method. At this time, the device determines that the device is still the actual distance between the device to which the camera belongs and the user with unknown distance.
- the technical solution provided by the embodiment is to identify the image data of the unknown distance user collected by the camera by using the distance model, wherein the distance model is determined based on the training of the image data of the known distance user, and the unknown distance is determined according to the recognition result.
- the technical solution of the actual distance between the user and the device to which the camera belongs realizes the method of establishing a distance model through machine learning to quickly and accurately obtain the actual distance between the user and the device.
- FIG. 2 is a flowchart of a method for determining a distance according to Embodiment 2 of the present invention. This embodiment is embodied on the basis of the above embodiment. Referring to FIG. 2, the method provided in this embodiment specifically includes:
- an image containing a user of a known distance is acquired, and image data of a user of a known distance is determined by the image.
- the actual distance between the user and the device to which the camera capturing the image belongs is known to be determined by manual measurement.
- image data of a known distance user of a preset number (eg, 200, 500, etc.) is acquired to ensure the accuracy of the training model.
- the acquired image containing the user of known distance covers the user image at each actual distance value in the normal situation.
- the actual distance is the first distance from the user's eyes to the camera, and the device to which the camera belongs is an interactive smart tablet. If the specific value of the first distance is in the range of 30 cm-150 cm, the interval is one centimeter, and the different cm is included. Knowing the image of the user, preferably, the number of images per centimeter is not unique.
- the image data of the corresponding known distance user can be obtained according to the type of the actual distance that is desired.
- the image data of the known distance user whose actual distance is the same value is collected to obtain a plurality of image data sets, and each value and the corresponding image data set are trained as training data to obtain a distance model.
- the training method is not limited in this embodiment.
- the distance model is to output multiple types of actual distances
- the image data of the known distance user corresponding to the same value in each type of actual distance may be separately collected, and each value and corresponding image data are respectively collected.
- the set is trained as training data to obtain a distance model that outputs a plurality of types of actual distances.
- S240 Identify, by using a distance model, image data of an unknown distance user, and determine an actual distance between the unknown distance user and the device to which the camera belongs according to the recognition result.
- the image data is the total number of first pixels included in the head display area, and correspondingly, the actual distance is the first distance from the user's eyes to the camera.
- the first distance may indicate a lateral distance between the user and the device. If the first distance is too small, the user is too close to the device, and vice versa, the user is too far from the device.
- the first distance may include a first sub-distance of the user's left eye to the camera, a second sub-distance of the user's right eye to the camera, and may also include a first distance from the center point between the user's eyes to the camera.
- the image data corresponding to the first distance is the total number of pixels in the image for displaying the head of the user.
- the device acquires a certain number of the first pixel points of the user of the known first distance, and performs training to obtain a distance model, and when the total number of the first pixel points of the user of the unknown first distance is subsequently acquired, the total number of the first pixel points is obtained.
- the first distance can be obtained.
- the image data is the total number of second pixels in the vertical direction between the user's eyes and the lower boundary of the image.
- the actual distance is the vertical second distance from the eye to the horizontal plane of the bottom edge of the device.
- the vertical second distance may indicate the longitudinal distance between the user and the device. If the vertical second distance is too small, the device is in an upper position relative to the user, and the user needs to look up the device, and vice versa. Explain that the device is in a lower position relative to the user, and the user needs to look down at the device.
- the bottom edge of the display may be used as the bottom edge of the device, or the bottom edge of the outer frame of the device may be used as the bottom edge of the device.
- the vertical second distance may include a vertical first sub-distance of the user's left eye to the horizontal plane of the bottom edge of the device, a vertical second sub-distance of the user's right eye to the horizontal plane of the bottom edge of the device, and may also include between the user's eyes
- the center point is the vertical second distance from the horizontal plane where the bottom edge of the device is located.
- the total number of second pixels in the vertical direction between the user's eyes and the lower boundary of the image is perpendicular to the image in the image. In the direction of the lower boundary, the total number of pixels of the user's eye to the lower boundary of the image is displayed.
- the pixel point of the user's eye may be the pixel point closest to the lower boundary of the image in the pixel of the two eyes, or the pixel farthest from the lower boundary of the image in the binocular pixel, or the farthest pixel and The middle pixel point between the nearest pixels.
- the farthest and most recent mentioned above refers to the distance in the vertical direction of the lower boundary of the image.
- the device acquires a certain number of the second pixel points of the user of the known vertical second distance, performs training to obtain the distance model, and then obtains the second total of the second pixel points of the unknown vertical second distance user, and then the second The total number of pixels as the input to the distance model gives the user a vertical second distance.
- a distance model that simultaneously determines the first distance and the vertical second distance can be trained. At this time, if the total number of first pixels of the unknown distance user is used as the input of the distance model, the first distance can be obtained. By using the total number of second pixels of the unknown distance user as the input of the distance model, a vertical second distance can be obtained, and the total number of the first pixel points and the total number of the second pixel points of the unknown distance user can be used as the input of the distance model, and then At the same time, a first distance and a vertical second distance are obtained.
- the distance model is obtained by training the image data of the known distance user and the corresponding actual distance, and the image data of the unknown distance user is identified by the distance model to obtain the actual distance of the unknown distance user.
- the technical means realizes the fast and accurate distance between the user and the device, and the distance between the user's eyes and the camera can be obtained, and the vertical distance between the user's eyes and the horizontal plane of the bottom edge of the device can be obtained, so that the determination is made.
- the actual distance is more diverse, which enhances the user experience.
- FIG. 3 is a flowchart of a method for determining a distance according to Embodiment 3 of the present invention. This embodiment is embodied on the basis of the above embodiment. Referring to FIG. 3, the method provided in this embodiment specifically includes:
- the basic data is the data that affects the determination result when determining the actual distance.
- the basic data includes: face orientation data and/or age grouping.
- the image data corresponding to the images of the two users captured by the camera may be different, therefore, the actual two users are determined according to the distance model.
- the distance is different, it is possible to obtain different actual distances, that is, there is a deviation. Therefore, in order to obtain an accurate actual distance, it is necessary to consider the face orientation data when training the distance model.
- the face orientation data refers to an angle at which the user's face faces in the image. It may include a first angle in the horizontal direction and a second angle in the vertical direction.
- the face orientation data is horizontal 0° and vertical 0°, it means that the user's face is facing the camera when taking a picture.
- the face orientation data is 10° to the left and 10° to the left, which means that the user's face is turned 10° to the left and the head is raised by 10° compared to the user's face facing the camera.
- changes in the camera shooting angle and changes in the rotation angle of the device may cause the face to change toward the data.
- the method for determining the face orientation data is not limited in this embodiment, such as determining the face orientation data after the image analysis process, and inputting the face orientation data after the manual measurement, and then determining the rotation angle of the whole machine, based on the rotation angle of the whole machine. The face is facing the data.
- the age grouping may be set in advance, and the age of each known distance user is confirmed. Grouping to ensure that an accurate distance model is trained. Specifically, the grouping boundary can be set according to actual conditions, such as a group of 1-5 years old, a group of 6-12 years old, a group of 12-18 years old, and a group of 18 years old or older.
- the manner of determining the age group is not limited. For example, after the image analysis processing, the age group is determined based on the user's facial features, and the age group is manually input.
- it may also include determining only the actual distance of the user under a certain age group according to actual conditions. E.g, Only when the child uses the interactive smart tablet, determine the actual distance between the child and the interactive smart tablet, and then confirm whether the child is within the optimal distance, so as to avoid damage to the body or eyes caused by improper distance.
- the image data of the known distance users under the same age grouping is grouped into the same image data set.
- image data of the same distance user under the same face orientation data is grouped into the same image data set.
- the specific manner of grouping is not limited.
- the image data of the known distance user under the same group is collected into the same image data set, so that the image due to excessive face orientation data can be prevented. Too many data sets.
- image data of a known distance user whose actual distance value is the same is grouped into the same sub data set.
- each basic data has a corresponding distance model.
- the basic data includes the face orientation data and the age grouping
- the face orientation data and the image dataset grouped by the age group may be combined and trained, and each basic data combination has a corresponding distance model.
- the basic data of the unknown distance user is determined in the same manner as the basic data of the known distance user.
- the basic data of the known distance user includes the face orientation data and the age grouping
- the basic data of the unknown distance user may include at least one of face orientation data and an age grouping.
- the image data of the unknown distance user is identified by the distance model corresponding to 6-12 years old.
- the technical solution provided by the embodiment is to collect image data of a known distance user from the same basic data into the same image data set, and train the image data set and the actual distance corresponding to the image data set to obtain the basic data.
- the distance model determines the basic data of the unknown distance user, and identifies the image data of the unknown distance user through the distance model corresponding to the basic data, so as to obtain the technical distance of the unknown distance user, and realizes the determination of different facial orientations.
- the actual distance between the user and the device and the actual distance between the user and the device at different ages make the actual distance more accurate and improve the user experience.
- FIG. 4 is a schematic structural diagram of an apparatus for determining a distance according to Embodiment 4 of the present invention. Specifically, referring to FIG. 4, the apparatus specifically includes:
- the data acquisition module 401 is configured to acquire image data of an unknown distance user collected by the camera; the distance identification module 402 is configured to identify image data of the unknown distance user by using the distance model, and determine, between the unknown distance user and the camera belonging device, according to the recognition result.
- the technical solution provided by the embodiment is to identify the image data of the unknown distance user collected by the camera by using the distance model, wherein the distance model is determined based on the training of the image data of the known distance user, and the unknown distance is determined according to the recognition result. Actual distance between the user and the device to which the camera belongs The technical solution realizes the method of establishing a distance model through machine learning to quickly and accurately obtain the actual distance between the user and the device.
- the method further includes: an image acquisition module, configured to acquire image data of a user with a known distance before acquiring image data of an unknown distance user acquired by the camera; and a model training module, configured to: The image data and the actual distance of the known distance user are trained as training data of the distance model to determine the distance model.
- the model training module includes: a first data determining unit, configured to determine basic data of a known distance user, the basic data includes: face orientation data and/or age grouping; data collection unit, The image data of the known distance user having the same basic data is grouped into the same image data set; the data training unit is configured to use the actual distance of the image data set and the known distance user corresponding to the image data set as the corresponding basic data.
- the distance model's training data is trained to determine the distance model.
- the distance identification module 402 includes: a second data determining unit configured to determine basic data of the unknown distance user; and a data identifying unit configured to use the distance model corresponding to the basic data of the unknown distance user to image data of the unknown distance user
- the identification unit is configured to determine an actual distance between the unknown distance user and the device to which the camera belongs according to the recognition result.
- the image data is the total number of first pixels included in the head display area, and correspondingly, the actual distance is the first distance from the user's eyes to the camera.
- the image data is the total number of second pixels in the vertical direction between the user's eyes and the lower boundary of the image.
- the actual distance is the vertical second distance from the eye to the horizontal plane of the bottom edge of the device.
- the device for determining the distance provided by the embodiment of the present invention may be used to perform the method for determining the distance provided by any of the foregoing embodiments, and has corresponding functions and beneficial effects.
- FIG. 5 is a schematic structural diagram of a device according to Embodiment 5 of the present invention.
- the device includes a processor 50, a memory 51, an input device 52, an output device 53, and a camera 54.
- the number of processors 50 in the device may be one or more, and one processor 50 is used in FIG.
- the number of cameras 54 in the device may be one or more, and one camera 54 is taken as an example in FIG. 5;
- the processor 50, the memory 51, the input device 52, the output device 53, and the camera 54 in the device may be through a bus or other.
- the mode is connected, and the connection by bus is taken as an example in FIG.
- the processor 50 executes the program, the method for determining the distance in the embodiment of the present invention is implemented.
- the memory 51 is used as a computer readable storage medium for storing a software program, a computer executable program, and a module, such as a program instruction/module corresponding to the method for determining a distance in the embodiment of the present invention (for example, in a device for determining a distance) Image acquisition module 401 and distance determination module 402).
- the processor 50 executes various functional applications of the device and data processing by executing software programs, instructions, and modules stored in the memory 51, that is, implementing the above-described method of determining the distance.
- the memory 51 may mainly include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the device, and the like. Further, the memory 51 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, or other nonvolatile solid state storage device. In some examples, memory 51 may further include memory remotely located relative to processor 50, which may be connected to the device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
- Input device 52 can be used to receive input digital or character information and to generate key signal inputs related to user settings and function control of the device.
- the output device 53 may include a display device such as a display screen.
- Photo The image header 54 can be used to acquire image data.
- the device provided by this embodiment may be used to perform the method provided by any of the foregoing embodiments, and has corresponding functions and beneficial effects.
- Embodiment 6 of the present invention also provides a storage medium including computer executable instructions for performing a method of determining a distance when executed by a computer processor, the method comprising:
- the image data of the unknown distance user is identified by the distance model, and the actual distance between the unknown distance user and the device to which the camera belongs is determined according to the recognition result, wherein the distance model is determined based on the training of the image data of the known distance user.
- a storage medium containing computer executable instructions the computer executable instructions are not limited to the method operations as described above, and may also perform the method for determining the distance provided by any embodiment of the present invention. Related operations, and have the corresponding functions and benefits.
- the present invention can be implemented by software and necessary general hardware, and can also be implemented by hardware, but in many cases, the former is a better implementation. .
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk of a computer. , read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions to make a computer device (can be a robot, Personal computer, server, or network device, etc.) performing various embodiments of the present invention The method described.
- each unit and module included is only divided according to functional logic, but is not limited to the foregoing division, as long as the corresponding function can be implemented; in addition, each functional unit
- the specific names are also for convenience of distinguishing from each other and are not intended to limit the scope of the present invention.
Abstract
Description
Claims (10)
- 一种确定距离的方法,其特征在于,包括:获取摄像头采集的未知距离用户的图像数据;利用距离模型对所述未知距离用户的图像数据进行识别,根据识别结果确定所述未知距离用户与所述摄像头所属设备间的实际距离,其中,所述距离模型是基于已知距离用户的图像数据进行训练而确定。
- 根据权利要求1所述的方法,其特征在于,所述获取摄像头采集的未知距离用户的图像数据之前,还包括:获取已知距离用户的图像数据;将所述已知距离用户的图像数据和所述已知距离用户的实际距离作为所述距离模型的训练数据进行训练,以确定所述距离模型。
- 根据权利要求2所述的方法,其特征在于,所述将所述已知距离用户的图像数据和所述已知距离用户的实际距离作为所述距离模型的训练数据进行训练包括:确定已知距离用户的基本数据,所述基本数据包括:面部朝向数据和/或所属年龄分组;将具有相同基本数据的所述已知距离用户的图像数据归集为同一图像数据集;将所述图像数据集和与所述图像数据集对应的已知距离用户的实际距离作为对应基本数据的距离模型的训练数据进行训练;所述利用距离模型对所述未知距离用户的图像数据进行识别包括:确定所述未知距离用户的基本数据;利用与所述未知距离用户的基本数据对应的距离模型对所述未知距离用户的图像数据进行识别。
- 根据权利要求2所述的方法,其特征在于,所述图像数据为头部显示区域包含的第一像素点总数,相应的,所述实际距离为用户的眼睛到所述摄像头的第一距离。
- 根据权利要求2所述的方法,其特征在于,所述图像数据为用户的眼睛与图像下边界间竖直方向的第二像素点总数,相应的,所述实际距离为所述眼睛到所述设备底边所在水平面的竖直第二距离。
- 一种确定距离的装置,其特征在于,包括:数据获取模块,用于获取摄像头采集的未知距离用户的图像数据;距离识别模块,用于利用距离模型对所述未知距离用户的图像数据进行识别,根据识别结果确定所述未知距离用户与所述摄像头所属设备间的实际距离,其中,所述距离模型是基于已知距离用户的图像数据进行训练而确定。
- 根据权利要求6所述的装置,其特征在于,还包括:图像获取模块,用于获取摄像头采集的未知距离用户的图像数据之前,获取已知距离用户的图像数据;模型训练模块,用于将所述已知距离用户的图像数据和所述已知距离用户的实际距离作为所述距离模型的训练数据进行训练,以确定所述距离模型。
- 根据权利要求7所述的装置,其特征在于,所述模型训练模块包括:第一数据确定单元,用于确定已知距离用户的基本数据,所述基本数据包括:面部朝向数据和/或所属年龄分组;数据归集单元,用于将具有相同基本数据的所述已知距离用户的图像数据归集为同一图像数据集;数据训练单元,用于将所述图像数据集和与所述图像数据集对应的已知距离用户的实际距离作为对应基本数据的距离模型的训练数据进行训练,以确定 所述距离模型;所述距离识别模块包括:第二数据确定单元,用于确定所述未知距离用户的基本数据;数据识别单元,用于利用与所述未知距离用户的基本数据对应的距离模型对所述未知距离用户的图像数据进行识别;距离确定单元,用于根据识别结果确定所述未知距离用户与所述摄像头所属设备间的实际距离。
- 一种设备,其特征在于,包括:一个或多个处理器;存储器,用于存储一个或多个程序;摄像头,用于采集图像数据;当所述一个或多个程序被所述一个或多个处理器执行,使得所述一个或多个处理器实现如权利要求1-5中任一所述的确定距离的方法。
- 一种包含计算机可执行指令的存储介质,其特征在于,所述计算机可执行指令在由计算机处理器执行时用于执行如权利要求1-5中任一所述的确定距离的方法。
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