WO2020019131A1

WO2020019131A1 - Method and apparatus for determining light ray information, and electronic device

Info

Publication number: WO2020019131A1
Application number: PCT/CN2018/096689
Authority: WO
Inventors: 菲永奥利维尔; 李建亿
Original assignee: 太平洋未来科技（深圳）有限公司
Priority date: 2018-07-23
Filing date: 2018-07-23
Publication date: 2020-01-30
Also published as: CN109005362B; CN109005362A

Abstract

A method and apparatus for determining light ray information, and an electronic device. The method comprises: acquiring a target picture, and dividing the target picture into a first preset number of sub-pictures (S101), wherein each of the sub-pictures is composed of a second preset number of pixels; determining the light ray intensity of each of the sub-pictures, and calculating an image moment to determine a light intensity weighting center of the sub-picture (S102); determining, according to the light intensity weighting center of the sub-picture and a geometric center of the sub-picture, a light ray angle of the sub-picture (S103); and respectively calculating the light ray intensity and the light ray angle of the sub-pictures to obtain light ray information corresponding to the target picture (S104). In the method, environmental information, the position and the time of a picture or a video do not need to be pre-acquired, and collection and labeling of a face image or other specific hardware resources are not needed, and the light ray intensity can also be acquired in an area without light. Compared with the prior art, the method is lower in costs and is more convenient and accurate.

Description

Method, device and electronic equipment for determining light information

Technical field

The present invention relates to the field of image processing technology, and in particular, to a method, a device, and an electronic device for determining light information.

Background technique

Augmented Reality (AR) technology is a technology that calculates the position and angle of a camera image in real time, adds corresponding images, videos, and 3D models, and sets the virtual world on the screen to interact with the real world. By using AR devices, users can sense the existence of virtual objects. However, in the process of implementing the present invention, the inventors found that in the related art, since the virtual objects are all generated by a computer in advance, it is impossible to obtain the environmental information of the scene of the user during use, or to accurately detect the light intensity and Orientation and therefore cannot match the scene in the video or real world.

In addition, in order to obtain a virtual object of an AR device that is the same as a real scene, it is often captured directly through a mobile phone camera, and more and more users play AR videos directly through a mobile phone screen. In order to avoid the poor framing effect caused by shaking of the handheld device, or the user's physical exertion caused by holding the mobile phone for a long time to watch the video, it is often necessary to install the mobile phone in a fixed bracket to maintain stability. A special camera bracket is effective, but it is expensive and common. Users often use the simple bracket of the mobile phone to achieve the desired framing effect. Usually, the simple bracket is located on the protective case of the mobile phone, or pasted on the back of the mobile phone through strong glue. Problems, reasons for the aesthetics of mobile phones, reluctance to use mobile phone protective cases and adhesive simple brackets.

Summary of the Invention

The method, device, and electronic device for determining light information provided by the embodiments of the present invention are used to solve at least the foregoing problems in related technologies.

An embodiment of the present invention provides a method for determining light information, including:

Obtain a target picture, and decompose the target picture into a first preset number of sub-pictures, where the sub-picture is composed of a second preset number of pixels; determine the light intensity of the sub-picture, and calculate the image moment Determine the light intensity weighting center of the sub-picture; determine the light angle of the sub-picture according to the light intensity-weighted center of the sub-picture and the geometric center of the sub-picture; The angle is calculated to obtain the light information corresponding to the target picture.

Further, calculating the light intensity and light angle of each of the sub-pictures to obtain the light information corresponding to the target picture includes: determining a weight value corresponding to each of the sub-pictures; The vector of the light angles of the sub-pictures is weighted and summed to obtain the light angle corresponding to the target picture; an average light intensity is obtained according to the light intensity of each of the sub-pictures as the light intensity corresponding to the target picture.

Further, after determining the light intensity of the sub-picture, the method further includes: determining whether the light intensity of the sub-picture is in a first preset range; if it is not in the first preset range, then Culling the sub-picture.

Further, after the light angle of the sub-picture is determined according to the light intensity weighting center of the sub-picture and the geometric center of the sub-picture, the method further includes: Whether the light of the sub-picture comes from the ground; if it is from the ground, the sub-picture is removed.

Further, the method further comprises: calculating a confidence factor according to a vector of the weight value and the ray angle; and adjusting the weight value according to the confidence factor.

Another aspect of the embodiments of the present invention provides a device for determining light information, including:

An acquisition module is configured to acquire a target picture and decompose the target picture into a first preset number of sub-pictures, where the sub-pictures are composed of a second preset number of pixels; a first determination module is configured to determine all The light intensity of the sub-picture is calculated, and the image moment is calculated to determine the light-intensity weighting center of the sub-picture; the second determining module is configured to determine the weighting center of the sub-picture according to the light-intensity center of the sub-picture and the geometric center of the sub-picture The light angle of the sub-picture; a calculation module configured to calculate the light intensity and the light angle of each of the sub-pictures to obtain the light information corresponding to the target picture.

Further, the calculation module includes: a first determination unit for determining a weight value corresponding to each of the sub-pictures; and a weighted summation unit for a vector of a light angle of each of the sub-pictures according to the weight value Performing weighted summation to obtain the light angle corresponding to the target picture; a second determining unit, configured to obtain an average light intensity according to the light intensity of each of the sub-pictures, as the light intensity corresponding to the target picture.

Further, the first determining module is further configured to determine whether the light intensity of the sub-picture is in a first preset range; if not, the sub-picture is eliminated.

Further, the second determining module is further configured to determine whether the light of the sub-picture comes from the ground according to the light angle of the sub-picture; if it is from the ground, remove the sub-picture.

Further, the apparatus further includes an adjustment module, the adjustment module is configured to calculate a confidence factor according to the weight value and the vector of the light angle; and adjust the weight value according to the confidence factor.

Another aspect of the embodiments of the present invention provides an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a memory that can be used by the at least one processor An instruction that is executed by the at least one processor, so that the at least one processor can execute the method for determining light information according to any one of the foregoing.

Further, the electronic device is a mobile phone, and the obtaining of the target picture in the method for determining light information is implemented by the mobile phone. The mobile phone includes a front panel with a display screen and a mobile phone back cover; a middle and lower part of the mobile phone back cover is provided with a recessed area, and a support plate adapted to the shape and size of the recessed area is installed in the recessed area; The upper end of the support plate is hinged with the recessed area, so that the support plate can be rotated to a predetermined angle with the back cover of the mobile phone; a lower end of the support plate is provided with a connecting piece, and one end of the connecting piece and The support plate is soft-connected, and the other end is provided with a plugging portion adapted to the shape and size of the mobile phone charging interface, and the plugging portion is mated with the mobile phone charging interface;

Further, the support plate includes a first plate body, a second plate body, a first connection plate, a second connection plate, and a link, the first plate body, the first connection plate, the second connection plate, and the second The plates are sequentially connected to form a plate; the first plate has opposite first and second ends, the second plate has opposite third and fourth ends, and the link includes a first A rod body and a second rod body, opposite ends of the first rod body are hinged to the first end and the third end, respectively, and opposite ends of the second rod body are respectively connected to the second end and the fourth end End-to-phase hinge, wherein the first rod body and the second rod body are both disposed on a side of the support plate away from the front panel; the first connection plate and the second connection plate are located on the first Between the plate body and the second plate body, one side of the first connection plate is hinged to one side of the first plate body, and one side of the second connection plate is opposite to one side of the second plate body. Hinged, the other side of the first connection plate is hinged with the other side of the second connection plate, the first connection plate and the second connection plate The first plate is provided on a side of the support plate close to the front plate; the first plate is provided with a first portion disposed along a thickness direction of the first plate, and the first portion is located at a hinge between the first plate and the link. And between the first plate body and the hinge of the first connecting plate; the second plate body is provided with a second portion provided along its thickness direction, and the second portion is located on the second plate Between the hinge between the body and the connecting rod and the hinge between the second plate and the second connecting plate; the first portion, the second portion, the first connecting plate, the second connecting plate, and the connecting rod form five Rod body mechanism.

Further, the recessed area includes a bottom wall and a side wall, and the bottom wall and / or the side wall is provided with a ventilation structure, and the ventilation structure is a plurality of ventilation holes or ventilation grilles.

Further, the connecting member is made of rubber.

Further, each of the first end, the second end, the third end, and the fourth end is provided with a recessed portion, and opposite ends of the first rod body are respectively disposed in the recessed portion of the first end and the first end. In the recessed portion at the three ends, the opposite ends of the second rod body are respectively placed in the recessed portion of the third end and the recessed portion of the fourth end.

As can be seen from the above technical solutions, the method, device, and electronic device for determining light information provided by the embodiments of the present invention do not need to obtain environmental information, location, and time of pictures or videos in advance, and do not need to collect or mark face images or other specific information. Hardware resources. In areas without light, this method can also be used to obtain the light intensity. Compared with the prior art, the method provided by the embodiment of the present invention has lower cost, and is more convenient and accurate. In addition, the mobile phone with a support plate provided in the method for determining the light information provided by the embodiment of the present invention can make the mobile phone shoot and play more smoothly and more conveniently. It not only improves the quality of obtaining the target picture in the method of determining the light information, but also can be used separately from the above method.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some of the embodiments described in the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings.

FIG. 1 is a flowchart of a method for determining light information according to an embodiment of the present invention; FIG.

FIG. 2 is a light intensity weighted center and a weighted center coordinate position map of a sub-picture provided by an embodiment of the present invention; FIG.

3 is a specific flowchart of step S104 provided by an embodiment of the present invention;

4 is a structural diagram of a device for determining light information according to an embodiment of the present invention;

5 is a structural diagram of a device for determining light information according to an embodiment of the present invention;

6 is a schematic diagram of a hardware structure of an electronic device that executes a method for determining light information provided by an embodiment of a method of the present invention;

7 is a schematic structural diagram of a mobile phone for obtaining a target picture in a method for determining light information according to an embodiment of the present invention;

8 is an exploded view of a mobile phone support plate for obtaining a target picture in a method for determining light information according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a mobile phone support plate in a supported state for obtaining a target picture in a method for determining light information according to an embodiment of the present invention; FIG.

10 is an enlarged view of part A of FIG. 9;

11 is an enlarged view of a portion B of FIG. 9;

FIG. 12 is a schematic diagram of a mobile phone supporting plate for acquiring a target picture in a method for determining light information according to an embodiment of the present invention in a folded state.

detailed description

In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments in the embodiments of the present invention, all other embodiments obtained by those skilled in the art should belong to the protection scope of the embodiments of the present invention.

The execution subject of the embodiment of the present invention is an electronic device or a server. The electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a desktop computer with a camera, and the like. Hereinafter, some embodiments of the present invention will be described in detail with reference to the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. FIG. 1 is a flowchart of a method for determining light information according to an embodiment of the present invention. As shown in FIG. 1, a method for determining light information provided by an embodiment of the present invention includes:

S101. Obtain a target picture, and decompose the target picture into a first preset number of sub-pictures.

Specifically, the target picture may be a certain frame in a video or a single picture frame captured from a camera, which is not limited in the present invention. The acquisition timing may be based on a user's operation instruction, or when the scene of the video meets a preset requirement or condition.

In this step, after obtaining the target picture, the target picture is decomposed into a first preset number of small square grid elements composed of a preset size, and each small square grid element is used as a sub-picture, where The sub-picture is composed of a second preset number of pixels. For example, the target picture can be decomposed into C columns and R rows (where C and R are integers, and C≥2, R≥2) to obtain multiple sub-pictures, each of which consists of p pixels.

As an optional implementation manner of this embodiment, since the light information does not involve color problems, for a color picture, before the decomposition, the target picture can be extracted with grayscale, and the influence of the color on the light intensity acquisition can also be avoided.

S102. Determine a light intensity of the sub-picture, and calculate an image moment to determine a light-intensity weighting center of the sub-picture.

First, for each sub-picture, the light intensity corresponding to the sub-picture is obtained according to the contrast information and the like. After the light intensity is determined, it is determined whether the light intensity of the sub-picture is in a first preset range, and if it is not in the first preset range, the sub-picture is eliminated.

Specifically, a sub-picture with too high contrast may be a part of the outline of the target picture, which brings noise to subsequent calculations, so it needs to be removed and filtered. An analysis may be performed on multiple pictures in advance to determine a contrast range corresponding to an image belonging to an important information part of the picture, and the range is used as the first preset range.

For the sub-pictures in the first preset range, the image moment of each sub-picture needs to be calculated to determine the corresponding light intensity weighting center. An image moment is a set of moments calculated from digital graphics. It usually describes the global features of the image and provides a lot of information about the different types of geometric features of the image, such as size, position, direction, and shape. For example: First-order moments are related to shape; second-order moments show the degree of expansion of a curve around a straight line average; third-order moments are a measure of the symmetry of the mean; second- and third-order moments can be used to derive a set of seven Moment invariant and invariant moment are the statistical characteristics of the image, which meet the invariant invariance of translation, expansion and rotation. In image processing, geometric invariant moment can be used as an important feature to represent an object. Classify images. The above-mentioned first, second, third and third moments and the seven invariant moments derived from the second and third moments all have specific calculation formulas. According to these formulas, determining the light intensity weighting center belongs to common technical knowledge in the field. The present invention will not repeat them here.

As shown in FIG. 2, the light intensity weighting center g is determined by the image moment, and its coordinate position in the sub-image is (x _g , y _g ).

S103. Determine a light angle of the sub-picture according to a light intensity weighting center of the sub-picture and a geometric center of the sub-picture.

As shown in FIG. 2, determining the coordinate position (x _c , y _c ) of the geometric center c in the sub-picture, and comparing the coordinate position of the geometric center c with the coordinate position of the light intensity weighted center g determined in step S102. Vector from geometric center c to weighted center g

The direction of is the result of being affected by light, which provides us with a local light effect indication of the target picture location where the sub-picture is located. Specifically, vectors

Represents the direction of the light, and d represents the modulus of the vector cg

α represents the light angle of the sub-picture. Since tanα = (y _g -y _c ) / (x _g -x _c ), then α = Arctan ((y _g -y _c ) / (x _g -x _c )), that is, The light angle of the sub-picture is calculated by the coordinates of the geometric center and the weighted center.

As an optional implementation of this embodiment, after the light angle of each sub-picture is determined, whether the light of the sub-picture comes from the ground can be determined according to the light angle vector of the sub-picture. If the light of the sub-picture comes from the ground, If the light does not belong to the lighting information of the current scene, then the sub-picture is eliminated.

S104. Calculate the light intensity and light angle of each of the sub-pictures to obtain the light information corresponding to the target picture.

After determining the light intensity and light angle of each sub-picture through steps S102 and S103, the light intensity of all the sub-pictures is calculated to obtain the light intensity of the target picture, and the light angles of all the sub-pictures are calculated. The light angle of the target picture is obtained. The light angle of the target picture and the light intensity of the target picture are light information corresponding to the target picture.

Optionally, this step may be performed by the following sub-steps:

S1041: Determine a weight value corresponding to each of the sub-pictures.

Specifically, a weight value corresponding to each sub-picture may be determined according to a vector mode of a light angle corresponding to each sub-picture, and / or a light angle, and / or previous experience.

As an optional implementation of the embodiment of the present invention, a confidence factor may be calculated according to a weight value corresponding to each sub-picture and a vector of a light angle corresponding to each sub-picture. When the confidence factor is less than a preset value, the weight value is Make adjustments. Specifically, the confidence factor is a ratio of the vector sum of the angle of the light rays to the sum of the weight values. The confidence factor can indicate whether the weight value matches the trend of the vector. The closer the confidence factor is to 1, this indicates that the weight value The more appropriate. When the confidence factor is less than the preset value, it means that the determined weight value is inappropriate. At this time, the weight value needs to be adjusted. After the adjustment, a new confidence factor is calculated and tested according to the above method until the new confidence factor can be greater than the preset threshold. .

S1042: Perform weighted summation on a vector of light angles of the sub-pictures according to the weight value to obtain a light angle corresponding to the target picture.

Specifically, the length of the light angle vector of each sub-picture is determined according to the weight value, and then the vectors determined by each length are added to obtain a vector of the light angle corresponding to the target picture, and according to the light corresponding to the target picture The vector of angles can be obtained according to the method described in step S103.

S1043: Obtain an average light intensity according to the light intensity of each of the sub-pictures, as the light intensity corresponding to the target picture.

Specifically, since the light intensity is a scalar, there is no need to add a vector, so only the light intensity of each sub-picture needs to be added to obtain an average value, and the average value is the light intensity corresponding to the target image.

The method for determining light information provided by the embodiment of the present invention does not need to obtain environmental information, location, and time of a picture or a video in advance, and does not need to collect and mark a face image or other specific hardware resources. In areas without light, this method can also be used to obtain the light intensity. Compared with the prior art, the method provided by the embodiment of the present invention has lower cost, and is more convenient and accurate.

FIG. 4 is a structural diagram of a device for determining light information according to an embodiment of the present invention. As shown in FIG. 3, the device specifically includes: an acquisition module 100, a first determination module 200, a second determination module 300, and a calculation module 400. among them,

An obtaining module 100 is configured to obtain a target picture and decompose the target picture into a first preset number of sub-pictures, where the sub-pictures are composed of a second preset number of pixels; a first determining module 200 is configured to: Determine the light intensity of the sub-picture, and calculate the image moment to determine the light-intensity weighting center of the sub-picture; the second determination module 300 is configured to determine the light-intensity weighting center of the sub-picture and the geometry of the sub-picture The center determines the light angle of the sub-picture; a calculation module 400 is configured to calculate the light intensity and the light angle of each of the sub-pictures to obtain the light information corresponding to the target picture.

The apparatus for determining light information provided in the embodiment of the present invention is specifically configured to execute the method provided in the embodiment shown in FIG. 1 and FIG. 2, and the implementation principles, methods, and functional uses thereof are similar to the embodiments shown in FIG. 1 and FIG. 2. , Will not repeat them here.

FIG. 5 is a structural diagram of a device for determining light information according to an embodiment of the present invention. As shown in FIG. 5, the device specifically includes: an acquisition module 100, a first determination module 200, a second determination module 300, and a calculation module 400. among them,

Optionally, the calculation module 400 includes: a first determining unit 410, configured to determine a weight value corresponding to each of the sub-pictures; and a weighted summation unit 420, configured to perform a light angle on each of the sub-pictures according to the weight value The weighted sum of the vectors is obtained to obtain the light angle corresponding to the target picture. The second determining unit 430 is configured to obtain an average light intensity according to the light intensity of each of the sub-pictures as the light intensity corresponding to the target picture.

Optionally, the first determining module 200 is further configured to determine whether the light intensity of the sub-picture is in a first preset range; if not, the sub-picture is eliminated.

Optionally, the second determining module 300 is further configured to determine whether the light of the sub-picture comes from the ground according to the light angle of the sub-picture; if it is from the ground, remove the sub-picture.

Optionally, the apparatus further includes an adjustment module (not shown in the figure), the adjustment module is configured to calculate a confidence factor according to a vector of the weight value and the light angle; The weight value is adjusted.

The device for determining light information provided by the embodiment of the present invention is specifically configured to execute the method provided by the embodiment shown in FIG. 1 to FIG. 3, and the implementation principles, methods, and functional uses thereof are similar to the embodiments shown in FIG. 1-3. I will not repeat them here.

The above-mentioned apparatus for determining light information in the embodiments of the present invention may be used as one of the software or hardware functional units, which is independently provided in the above-mentioned electronic device, or may be used as one of the functional modules integrated in the processor to execute the embodiments of the present invention. Method for determining light information.

FIG. 6 is a schematic diagram of a hardware structure of an electronic device that executes a method for determining light information provided by an embodiment of a method of the present invention. According to FIG. 6, the electronic device includes:

One or more processors 610 and a memory 620. One processor 610 is taken as an example in FIG. 6. The device for performing the method for determining light information may further include an input device 630 and an output device 630.

The processor 610, the memory 620, the input device 630, and the output device 640 may be connected through a bus or other methods. In FIG. 6, the connection through the bus is taken as an example.

The memory 620 is a non-volatile computer-readable storage medium, and can be used to store non-volatile software programs, non-volatile computer executable programs, and modules, such as the method for determining light information in the embodiment of the present invention. Corresponding program instructions / modules. The processor 610 executes various functional applications and data processing of the server by running non-volatile software programs, instructions, and modules stored in the memory 620, that is, a method for determining the light information.

The memory 620 may include a storage program area and a storage data area, where the storage program area may store an operating system and an application program required for at least one function; the storage data area may store the use of the light information determining device provided according to the embodiment of the present invention Data created, etc. In addition, the memory 620 may include a high-speed random access memory 620, and may further include a non-volatile memory 620, such as at least one magnetic disk memory 620, a flash memory device, or other non-volatile solid-state memory 620. In some embodiments, the memory 620 may optionally include a memory 620 remotely disposed with respect to the processor 66, and these remote memories 620 may be connected to the light information determining device through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The input device 630 may receive inputted numeric or character information, and generate key signal inputs related to user settings and function control of the light information determining device. The input device 630 may include a device such as a pressing module.

The one or more modules are stored in the memory 620, and when executed by the one or more processors 610, perform a method for determining the light information.

The electronic devices in the embodiments of the present invention exist in various forms, including but not limited to:

(1) Mobile communication equipment: This type of equipment is characterized by mobile communication functions, and its main goal is to provide voice and data communication. Such terminals include: smart phones (such as iPhone), multimedia phones, feature phones, and low-end phones.

(2) Ultra-mobile personal computer equipment: This type of equipment belongs to the category of personal computers, has computing and processing functions, and generally has the characteristics of mobile Internet access. Such terminals include: PDA, MID and UMPC devices, such as iPad.

(3) Portable entertainment equipment: This type of equipment can display and play multimedia content. Such devices include: audio and video players (such as iPod), handheld game consoles, e-books, as well as smart toys and portable car navigation devices.

(4) The server.

(5) Other electronic devices with data interaction function.

Specifically, the electronic device in this embodiment may be a mobile phone with a supporting structure. Referring to FIGS. 7-12, the mobile phone may be used to obtain a target picture in the method for determining light information in the foregoing embodiment. The mobile phone is provided with a support plate on the back cover, which can make the mobile phone support stably, and is stable enough when acquiring target images and videos, thereby obtaining high-quality target pictures, and laying a foundation for subsequent processing of the target pictures. At the same time, the mobile phone's built-in support plate prevents the user from using a mobile phone case with a stand and an externally sticky stand, which facilitates the heat dissipation of the mobile phone, improves the aesthetics, and solves the fatigue caused by the user holding the mobile phone for a long time.

As shown in FIG. 7, the mobile phone includes a front panel with a display screen (not shown in the figure) and a mobile phone back cover 1000; a middle and lower part of the mobile phone back cover 1000 is provided with a recessed area 1100, and the recessed area 1100 is inside A support plate 2000 adapted to the shape and size of the recessed area 1100 is installed; the upper end of the support plate 2000 is hinged to the recessed area 1100 so that the support plate 2000 can be rotated to the mobile phone back cover 1000 is a preset angle. Specifically, the upper end of the support plate 2000 in this embodiment may have a rotating shaft, and the upper end of the recessed portion has a shaft hole adapted to the rotating shaft. The cooperation between the rotating shaft and the shaft hole is used to realize the support plate 2000. It can be rotated, of course, other rotating mechanisms with simpler structures are also within the optional range of this embodiment.

In addition, in order to realize the detachable connection between the lower end of the support plate 2000 and the mobile phone, in this embodiment, a connection piece 3000 is provided at the lower end of the support plate 2000. One end of the connection piece 3000 is soft-connected to the support plate 2000 and the other end has A plugging portion 310 adapted to the shape and size of the mobile phone charging interface 4000. The plugging portion 310 is mated with the mobile phone charging interface 4000. This structure not only realizes the detachable connection between the lower end of the support plate 2000 and the mobile phone, but also It can also protect the charging interface 4000 and improve the functionality of the support plate 2000. Specifically, the connecting member 3000 in this embodiment is made of rubber. The use of rubber not only has good deformation ability, but also has low cost and is easy to implement.

In this embodiment, a rotatable support plate is provided in the recessed area of the back cover of the mobile phone, which can support the mobile phone side by side to meet the user's requirements. There is no need to set a mobile phone case on the mobile phone, which prevents the mobile phone case from affecting the mobile phone. The effect of heat dissipation. The lower end of the support plate is fixed by connecting with the charging interface of the mobile phone, and it can also protect the charging interface and improve the functionality of the support plate. In addition, the expansion of the support plate in this embodiment is also very convenient. It only needs to be pulled out from the charging port of the mobile phone.

In addition, the existing support plate cannot play the role of fixing the mobile phone. Therefore, the inventor made further improvements to the above-mentioned support plate structure.

As shown in FIGS. 8-12, the support plate 2000 in this embodiment specifically includes a first plate body 2100, a second plate body 2200, a first connection plate 2300, a second connection plate 2400, and a connecting rod 2500. The first plate body 2100, the first connection plate 2300, the second connection plate 2400, and the second plate body 2200 are sequentially connected to form a plate body. The first plate body 2100 has opposite first ends and second ends (i.e., FIG. (The upper and lower ends shown), the second plate body 2200 has opposite third and fourth ends (ie, the upper and lower ends in the figure), and the link 2500 includes a first rod body 2510 and a second rod body 2520, opposite ends of the first rod body 2510 are hinged to the first end and the third end, respectively, and opposite ends of the second rod body 2520 are respectively connected to the second end and the fourth end Phase articulation, wherein the first rod body 2510 and the second rod body 2520 are both disposed on a side of the support plate away from the front panel.

It should be noted that the number of the connecting rods 2500 in this embodiment may also be one, and two ends of one connecting rod 2500 are respectively connected to the first and second ends, or two ends of one connecting rod 2500 are respectively connected to the first and second ends. The three ends are connected to the fourth end, or one end of a link 2500 is connected to the middle of one side of the first plate 2100, and the other end is connected to the middle of one side of the second plate 2200. At this time, the first connection The plate 2300 and the second connection plate 2400 are separate structures, that is, the first connection plate 2300 and the second connection plate 2400 are each composed of two plate-shaped members. Above a link 2500 is the first connection plate 2300 and the second connection One plate-like member of the plate 2400, and below the link 2500 is another plate-like member of the first connection plate 2300 and the second connection plate 2400.

Specifically, the first connection plate 2300 and the second connection plate 2400 in this embodiment are located between the first plate body 2100 and the second plate body 2200, and one side of the first connection plate 2300 One side of the first plate body 2100 is hinged, one side of the second connection plate 2400 is hinged with one side of the second plate body 2200, and the other side of the first connection plate 2300 is connected to the second plate The other side of the connection plate 2400 is hinged, wherein the first connection plate 2300 and the second connection plate 2400 are disposed on a side of the support plate 2000 near the front panel.

As shown in FIGS. 9-11, the first plate body 2100 in this embodiment is provided with a first portion 2110 disposed along a thickness direction thereof, and the first portion 2110 is located in the first plate body 2100 and the connecting rod 2500. Between the hinge portion of the first plate body 2100 and the hinge portion of the first connection plate 2300; the second plate body 2200 is provided with a second portion 2210 disposed along the thickness direction of the second plate body 2200, and the second portion 2210 is located between the hinge between the second plate body 2200 and the connecting rod 2500 and the hinge between the second plate body 2200 and the second connecting plate 2400; the first portion 2110, the second portion 2210, the first portion A connecting plate 2300, a second connecting plate 2400, and a connecting rod 2500 form a five-bar mechanism.

The above structure forms a five-bar mechanism through the first portion 2110, the second portion 2210, the first connection plate 2300, the second connection plate 2400, and the connecting rod 2500. When support is needed, the entire support plate 2000 structure is rotated to a certain angle. The first rod body 2510 and the second rod body 2520 are both disposed on a side of the support plate 2000 away from the front panel, and the first connection plate 2300 and the second connection plate 2400 are disposed on a side of the support plate 2000 near the front panel. When the support surface of the support plate 2000 gives a force away from the front panel, the five-link 2500 mechanism is at the first dead point position. The first plate 2100 and the first plate 2100, the first connection plate 2300, and the second connection The plate 2400 cannot be rotated, and the dead point position can only be opened by an external force near the front panel, which can ensure that the support plate 2000 is always a plate structure, which provides a stable support for the mobile phone. When the external force is used to open the dead point position, the first connecting plate and the second plate 2200 can be folded. At this time, the first connecting plate 2300 and the first connecting plate 2300 are rotated to the second dead point and the first connecting plate 2300. The second connecting plate 2400 can form a finger receiving portion for inserting a finger into the finger receiving portion, and can fix the mobile phone on a human hand to prevent the user from being crowded and colliding during use, causing the mobile phone to fall. The support plate 2000 not only plays a supporting role, but also plays a role of fixing the mobile phone, which greatly improves its functionality.

It should be noted that the implementation of the "phase articulation" between the two components described above may be provided with a shaft hole in one component, and a rotation shaft, a rotation shaft and a shaft hole matched with the shaft hole in the other component. Together, they form a rotating mechanism so that the two components can rotate relative to each other.

Advantageously, the material of the first connection plate 2300 and the second connection plate 2400 can be selected to have a certain deformability, such as soft plastic. When the first connection plate 2300 and the second connection plate 2400 form a finger receiving portion, , Inserting fingers into it can improve comfort.

In combination with FIG. 8, the first end, the second end, the third end, and the fourth end of the embodiment are each provided with a recess 2600, and the opposite ends of the first rod body 2510 are respectively disposed in the recesses. Within the recessed portion 2600 of the first end and the recessed portion 2600 of the third end, opposite ends of the second rod body 2520 are respectively placed in the recessed portion 2600 of the third end and the recessed portion 2600 of the fourth end.

In the above structure, the connecting rod 2500 mechanism is provided in the board body through the recessed portion, so that the connecting rod 2500 mechanism, the board body, and the connecting plate together form a board body structure, which improves the integrity of the entire supporting plate 2000 and facilitates the installation of the supporting plate 2000.

More advantageously, this embodiment further improves the structure of the recessed area 1100. The recessed area 1100 specifically includes a bottom wall and a side wall. The bottom wall is provided with a ventilation structure 1110, and the ventilation structure 1110 may be a plurality of The ventilation hole and the ventilation structure 1110 may be provided with a ventilation grille on the bottom wall. The design of the ventilation holes and the ventilation grille can enhance the heat dissipation effect of the mobile phone when the support plate 2000 is in a supported state or a folded state, thereby extending the service life of the mobile phone.

An embodiment of the present invention provides a non-transitory computer-readable storage storage medium, where the computer storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by an electronic device, the electronic device is caused The method for determining light information in any of the foregoing method embodiments is performed on the above.

An embodiment of the present invention provides a computer program product, wherein the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions When executed by an electronic device, the electronic device is caused to execute the method for determining light information in any of the foregoing method embodiments.

In the end, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than limiting them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and range.

Claims

A method for determining light information, comprising:

Obtaining a target picture, and decomposing the target picture into a first preset number of sub-pictures, where the sub-pictures are composed of a second preset number of pixels;

Determining the light intensity of the sub-picture, and calculating an image moment to determine a light-intensity weighting center of the sub-picture;

Determining a light angle of the sub-picture according to a light-weighted center of the sub-picture and a geometric center of the sub-picture;

Calculate the light intensity and light angle of each of the sub-pictures to obtain the light information corresponding to the target picture.
The method according to claim 1, wherein calculating the light intensity and light angle of each of the sub-pictures to obtain the light information corresponding to the target picture comprises:

Determining a weight value corresponding to each of the sub-pictures;

Performing weighted summation on a vector of light angles of each of the sub-pictures according to the weight value to obtain a light angle corresponding to the target picture;

An average light intensity is obtained according to the light intensity of each of the sub-pictures, as the light intensity corresponding to the target picture.
The method according to claim 1 or 2, wherein after the determining the light intensity of the sub-picture, the method further comprises:

Determining whether the light intensity of the sub-picture is in a first preset range;

If it is not in the first preset range, the sub-picture is deleted.
The method according to claim 1 or 2, wherein after determining the light angle of the sub-picture according to the light-weighted center of the sub-picture and the geometric center of the sub-picture, the The method also includes:

Determining whether the light of the sub-picture comes from the ground according to the light angle of the sub-picture;

If it is from the ground, the sub-picture is deleted.
The method according to claim 2, further comprising:

Calculating a confidence factor according to a vector of the weight value and the ray angle;

Adjusting the weight value according to the confidence factor.
A device for determining light information, comprising:

An obtaining module, configured to obtain a target picture and decompose the target picture into a first preset number of sub-pictures, where the sub-pictures are composed of a second preset number of pixels;

A first determining module, configured to determine a light intensity of the sub-picture, and calculate an image moment to determine a light-intensity weighting center of the sub-picture;

A second determining module, configured to determine a light angle of the sub-picture according to a light intensity weighting center of the sub-picture and a geometric center of the sub-picture;

The calculation module is configured to calculate the light intensity and light angle of each of the sub-pictures to obtain the light information corresponding to the target picture.
The apparatus according to claim 6, wherein the calculation module comprises:

A first determining unit, configured to determine a weight value corresponding to each of the sub-pictures;

A weighted summing unit, configured to perform weighted summation on a vector of light angles of the sub-pictures according to the weight value to obtain a light angle corresponding to the target picture;

The second determining unit is configured to obtain an average light intensity according to the light intensity of each of the sub-pictures, as the light intensity corresponding to the target picture.
The device according to claim 6 or 7, wherein the first determining module is further configured to determine whether the light intensity of the sub-picture is in a first preset range; if it is not in the first preset range, Range, the sub-picture is eliminated.
The device according to claim 6 or 7, wherein the second determining module is further configured to determine whether the light of the sub-picture comes from the ground according to the light angle of the sub-picture; Ground, the sub-pictures are removed.
An electronic device, comprising: at least one processor; and

A memory connected in communication with the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute any one of claims 1 to 5. Method for determining light information.