WO2016145736A1

WO2016145736A1 - Method, apparatus and device for presenting thermodynamic chart and non-volatile computer storage medium

Info

Publication number: WO2016145736A1
Application number: PCT/CN2015/080987
Authority: WO
Inventors: 张文波
Original assignee: 百度在线网络技术（北京）有限公司
Priority date: 2015-03-18
Filing date: 2015-06-08
Publication date: 2016-09-22
Also published as: CN104731894B; CN104731894A

Abstract

Provided are a method, apparatus and device for presenting a thermodynamic chart and a non-volatile computer storage medium. By means of obtaining statistical index data of an image (101), and obtaining a thermodynamic template image, with the thermodynamic template image being used for describing a designated image feature of each pixel on the thermodynamic template image (102), so that a thermodynamic chart corresponding to the image can be presented according to the statistical index data and the thermodynamic template image (103), due to being not completely dependent on an attenuation relationship of the set statistical index data, but in combination with the thermodynamic template image to present the thermodynamic chart, the problem in the prior art that the thermodynamic chart does not clearly present a distribution condition of the statistical index data of the image due to being completely dependent on the attenuation relationship of the set statistical index data can be avoided, so that the reliability of presenting the thermodynamic chart is improved.

Description

Method, device, device and non-volatile computer storage medium for displaying heat map

The present application claims priority to Chinese Patent Application No. 201510118051.9, the disclosure of which is incorporated herein by reference.

Technical field

The present invention relates to thermal map technology, and more particularly to a method, device, device and non-volatile computer storage medium for displaying heat maps.

Background technique

The heat map can obtain a number of statistical indicator data according to certain statistical standards, and use a special highlight form to represent the size of the statistical indicator data of each area in the image, thereby visually displaying the global characteristics of the area in front of the people. Ways. The heat map can be applied to various images. For example, map heat map is a service that uses real-time description of population distribution, density and change trend by superimposing blocks of different colors on the map. It is a convenience travel service based on Baidu big data. . Generally, each statistical indicator data can correspond to a display center position and a display area in the heat map. The display center position is the actual position of the statistical indicator data, and the radius of the display area can be referred to as a thermal radius. In the prior art, an attenuation relationship of a fixed statistical indicator data may be set by an operator for obtaining the heat of each pixel on the thermal radius according to the attenuation relationship of the set statistical indicator data within the display area. The data, in turn, can obtain the corresponding color according to the thermal data of each pixel, and display each statistical indicator data.

However, due to the complete dependence on the attenuation relationship of the set statistical indicator data, the thermal map cannot clearly show the distribution of the statistical indicator data of the image, thereby causing the reliability of the display of the heat map to be reduced.

Summary of the invention

Aspects of the present invention provide a method and apparatus for displaying a heat map for improving the reliability of display of a heat map.

In one aspect of the invention, a method for displaying a thermogram is provided, comprising:

Obtaining statistical indicator data of the image;

Obtaining a thermal template image for describing a specified image feature of each pixel on the thermographic image;

And displaying a heat map corresponding to the image according to the statistical indicator data and the thermal template image.

The aspect as described above, and any possible implementation manner, further provide an implementation manner, where the statistical indicator data includes a statistical parameter and a location corresponding to the image; and the obtained statistical indicator data of the image includes:

Performing density-based clustering processing according to the position of the statistical indicator data to be processed on the image to obtain at least one candidate class;

Obtaining at least one target class according to the number of statistical indicator data included in each candidate class of the at least one candidate class and a preset number threshold;

According to statistical indicator data included in each target class in the at least one target class Obtaining a position of each of the target classes on a position corresponding to the image;

Obtaining, according to the statistical parameter corresponding to the statistical indicator data included in each target class in the at least one target class, the statistical parameter of each target class;

The statistical indicator data of each of the target classes is obtained according to the statistical parameters of each target class and the location of each of the target classes.

The aspect as described above and any possible implementation manner further provide an implementation manner, wherein the obtaining the thermal template image comprises:

Obtaining a presentation ratio of the image;

The thermographic template image is obtained according to the presentation ratio.

The aspect as described above, and any possible implementation manner, further providing an implementation manner, where the heat map corresponding to the image is displayed according to the statistical indicator data and the thermal template image, including:

Obtaining a specified image feature of each pixel on the thermal template image according to the thermal template image;

Obtaining thermal data of each pixel according to the statistical indicator data and the specified image feature of each pixel;

Obtaining a presentation color of each of the pixels according to the thermal data of each pixel;

A heat map corresponding to the image is presented according to the presentation color of each pixel.

An aspect as described above, and any possible implementation manner, further providing an implementation manner, where the heat map corresponding to the image is presented according to the display color of each pixel, include:

Obtaining display transparency of each of the pixels;

A heat map corresponding to the image is presented according to the presentation color of each pixel and the presentation transparency of each pixel.

The aspect as described above and any possible implementation manner further provide an implementation manner, where the obtaining transparency of each of the pixels includes:

a preset transparency set in advance as the transparency of each of the pixels; or

The display transparency of each of the pixels is obtained according to the thermal power data of each of the pixels and the preset at least two preset transparencys.

The aspect as described above and any possible implementation manner further provide an implementation manner, before the obtaining the thermal template image, the method further includes:

The thermo template image is created based on sample statistical parameters and corresponding locations on the sample image.

In another aspect of the invention, a display device for a heat map is provided, comprising:

Obtaining a unit for obtaining statistical indicator data of an image;

a template unit for obtaining a thermal template image for describing a specified image feature of each pixel on the thermal template image;

And a presentation unit, configured to display a heat map corresponding to the image according to the statistical indicator data and the thermal template image.

An aspect of the foregoing, and any possible implementation, further providing an implementation manner, where the statistical indicator data includes a statistical parameter and a location corresponding to the image; the obtaining unit is specifically configured to:

Obtaining a location of each of the target classes according to a location corresponding to the statistical indicator data included in each target class in the at least one target class on the image;

An aspect of the foregoing, and any possible implementation manner, further providing an implementation manner, where the template unit is specifically used to

Obtaining a representation ratio of the image;

An aspect of the foregoing, and any possible implementation manner, further providing an implementation manner, where the presentation unit is specifically configured to

Obtaining a designation of each pixel on the thermal template image according to the thermal template image Image feature

Obtaining a presentation color of each of the pixels according to the thermal data of each of the pixels;

Obtaining display transparency of each of the pixels;

An aspect of the foregoing, and any possible implementation, further providing an implementation manner, where the template unit is further used to

Creating the thermal model based on sample statistical parameters and corresponding locations on the sample image Board image.

In another aspect of the invention, an apparatus is provided, comprising:

One or more processors;

Memory

One or more programs, the one or more programs being stored in the memory, when executed by the one or more processors:

Obtaining statistical indicator data of the image;

In another aspect of the present invention, a nonvolatile computer storage medium storing one or more programs when the one or more programs are executed by a device causes The device:

Obtaining statistical indicator data of the image;

According to the foregoing technical solution, the embodiment of the present invention obtains statistical indicator data of an image, And obtaining a thermal template image for describing a specified image feature of each pixel on the thermal template image, such that the corresponding image is displayed according to the statistical indicator data and the thermal template image The heat map, because it does not completely rely on the attenuation relationship of the set statistical indicator data, but combines the thermal template image to display the heat map, thus avoiding the attenuation in the prior art due to the complete dependence on the set statistical indicator data. The heat map caused by the relationship cannot clearly show the distribution of the statistical indicator data of the image, thereby improving the reliability of the heat map display.

In addition, according to the technical solution provided by the present invention, since the attenuation relationship of the set statistical indicator data is no longer completely relied on, the thermal template image is combined with the thermal template image to make the operation object change from pixel to image, and therefore, Effectively improve the efficiency of the heat map display.

In addition, according to the technical solution provided by the present invention, since the thermal force image is displayed by using the thermal template image corresponding to the image display ratio, it is possible to avoid that the heat map cannot be clearly obtained due to the use of a fixed thermal template image. The problem of displaying the distribution of the statistical indicator data of the image can further effectively improve the reliability of the display of the heat map.

In addition, according to the technical solution provided by the present invention, since the thermal template image corresponding to the display ratio of the image is used to display the thermal map, the statistical index data of the image can be clearly displayed under each display ratio of the image. Can effectively improve the utilization rate of the heat map.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art in light of the inventive workability.

1 is a schematic flow chart of a method for displaying a heat map according to an embodiment of the present invention;

2 is a schematic structural diagram of a display device of a heat map according to another embodiment of the present invention;

3A is a schematic diagram showing the effect of a typical thermal template image in the embodiment corresponding to FIG. 1;

FIG. 3B is a schematic diagram showing the effect of the thermal template image corresponding to the map zoom level of the electronic map in the embodiment corresponding to FIG. 1;

FIG. 3C is a schematic diagram showing the effect of the thermal template image corresponding to the map zoom level of the electronic map in the embodiment corresponding to FIG. 1; FIG.

FIG. 3D is a schematic diagram showing the effect of the thermal template image corresponding to the 13-level map zoom level of the electronic map in the embodiment corresponding to FIG. 1; FIG.

FIG. 3E is a schematic diagram showing the effect of the thermal template image corresponding to the map zoom level of the electronic map in the embodiment corresponding to FIG. 1; FIG.

FIG. 3F is a schematic diagram showing the effect of the thermal template image corresponding to the 11th level of the map zoom level of the electronic map in the embodiment corresponding to FIG. 1; FIG.

FIG. 3G is a schematic diagram showing the effect of the thermal template image corresponding to the map zoom level of the electronic map in the embodiment corresponding to FIG. 1;

4A is a schematic diagram showing the effect of a heat map of a Beijing South Railway Station area demonstrated by a technical solution that does not employ a thermal template image in the prior art;

4B is a technical solution of using a fixed thermal template image in the embodiment corresponding to FIG. 1. A schematic diagram showing the effect of the heat map of the Beijing South Railway Station area;

4C is a schematic diagram showing the effect of the thermal map of the Beijing West Railway Station area demonstrated by the technical solution that does not adopt the thermal template image in the prior art;

FIG. 4D is a schematic diagram showing the effect of the thermal map of the Beijing West Railway Station area demonstrated by the technical solution of using the fixed thermal template image in the embodiment corresponding to FIG. 1; FIG.

4E is a schematic diagram showing the effect of the heat map of the Beijing station area exhibited by the technical solution that does not adopt the thermal template image in the prior art;

4F is a schematic diagram showing the effect of the heat map of the Beijing station area exhibited by the technical solution of using the fixed thermal template image in the embodiment corresponding to FIG. 1;

FIG. 5A is a schematic diagram showing the effect of a thermal map of a Wangfujing area displayed by a map zoom level of an electronic map in a technical solution in which no thermal template image is used in the prior art; FIG.

FIG. 5B is a schematic diagram showing the effect of the thermal map of the Wangfujing area displayed by the thermal template image corresponding to the map zoom level of the electronic map in the embodiment corresponding to FIG. 1; FIG.

FIG. 5C is a schematic diagram showing the effect of the thermal map of the Wangfujing area displayed by the map zoom level of the electronic map in the technical solution in which the thermal template image is not used in the prior art; FIG.

FIG. 5D is a schematic diagram showing the effect of the thermal map of the Wangfujing area displayed by the thermal template image corresponding to the map zoom level of the electronic map in the embodiment corresponding to FIG. 1; FIG.

FIG. 5E is a schematic diagram showing the effect of the thermal map of the Wangfujing area displayed by the map zoom level of the electronic map in the technical solution in which the thermal template image is not used in the prior art; FIG.

FIG. 5F is a schematic diagram showing the effect of the thermal map of the Wangfujing area displayed by the thermal template image corresponding to the 13-level map zoom level of the electronic map in the embodiment corresponding to FIG. 1.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that the terminals involved in the embodiments of the present invention may include, but are not limited to, a mobile phone, a personal digital assistant (PDA), a wireless handheld device, a tablet computer, and a personal computer (Personal Computer, PC). ), MP3 player, MP4 player, wearable device (for example, smart glasses, smart watches, smart bracelets, etc.).

In addition, the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

FIG. 1 is a schematic flow chart of a method for displaying a heat map according to an embodiment of the present invention, as shown in FIG. 1 .

101. Obtain statistical indicator data of an image.

102. Obtain a thermal template image for describing a specified image feature of each pixel on the thermal template image.

103. Display a heat map corresponding to the image according to the statistical indicator data and the thermal template image.

It should be noted that part or all of the execution entities of 101 to 103 may be applications located in the local terminal, or may be plug-ins or software disposed in an application located in the local terminal. A functional unit such as a software development kit (SDK), or a processing engine located in the network side server, or a distributed system located on the network side, is not specifically limited in this embodiment.

It is to be understood that the application may be a local application (nativeApp) installed on the terminal, or may be a web application (webApp) of the browser on the terminal, which is not limited in this embodiment.

In this way, by obtaining statistical indicator data of the image and obtaining a thermal template image, the thermal template image is used to describe a specified image feature of each pixel on the thermographic template image, such that the statistical index data and the thermal force can be The template image, showing the thermal map corresponding to the image, is not completely dependent on the attenuation relationship of the set statistical indicator data, but is combined with the thermal template image to display the thermal map, thereby avoiding the prior art The thermal map caused by the attenuation relationship of the set statistical indicator data cannot completely reveal the distribution of the statistical indicator data of the image, thereby improving the reliability of the heat map display.

In the present invention, the so-called statistical indicator data of an image refers to a statistical parameter obtained by using some statistical methods to perform statistics on some characteristics of a certain region of an image. Specifically, the statistical indicator data may include, but is not limited to, a statistical parameter and a position corresponding to the image, which is not specifically limited in this embodiment. For example, the flow of people in a certain area, etc.

Optionally, in a possible implementation manner of this embodiment, in 101, performing density-based clustering processing according to a position corresponding to the statistical indicator data to be processed on the image, to obtain at least A candidate class. Further, at least one target class may be obtained according to the number of statistical indicator data included in each candidate class of the at least one candidate class and a preset number threshold. Then, according to the at least one target class The position of the statistical indicator data included in each of the target classes on the image, the location of each of the target classes, and the statistics included in each target class in the at least one target class The statistical parameters corresponding to the indicator data obtain the statistical parameters of each target class. Finally, the statistical indicator data of each target class may be obtained according to the statistical parameters of each target class and the location of each target class.

In this way, by clustering the statistical indicator data, the problem that the distribution of the statistical indicator data displayed by the heat map is too dense can be avoided, and the reliability of the heat map can be effectively improved.

It can be understood that "the location of each target class is obtained according to the position of the statistical indicator data included in each target class in the at least one target class on the image", and Determining, by the statistical parameter corresponding to the statistical indicator data included in each target class in the at least one target class, the two steps of obtaining the statistical parameter of each target class, without a fixed order, the processing device may execute first "according to the position of the statistical indicator data included in each target class in the at least one target class on the image, obtaining the location of each target class", and then performing "according to the at least a step of obtaining a statistical parameter corresponding to the statistical indicator data included in each target class in a target class, obtaining a statistical parameter of each of the target classes, or performing "before each of the at least one target class The statistical parameters corresponding to the statistical indicator data included in the target class, obtain the statistical parameters of each target class, and then execute the a step of obtaining a position of each of the target classes at a position corresponding to the statistical indicator data included in each target class in the at least one target class, or may simultaneously perform the two steps, The embodiment is not particularly limited thereto.

Specifically, an existing density-based clustering algorithm may be specifically used, for example, based on a secret The detailed description of the Density-Based Spatial Clustering of Applications with Noise (DBSCAN) algorithm can be found in the related art, and details are not described herein again.

Specifically, if the number of statistical indicator data included in the candidate class is greater than or equal to a preset number threshold, the candidate class is regarded as a target class; otherwise, if the number of statistical indicator data included in the candidate class is less than a predetermined amount If the number threshold is set, the candidate class is ignored and no subsequent processing is performed on the candidate class.

Specifically, after obtaining at least one target class, a center location data may be calculated according to each statistical indicator data included in each target class at a position corresponding to the image, as each target class. position. Taking the flow of people in an area on the electronic map as an example, when the terminal uses the positioning technology to perform positioning, the obtained positioning data can be used as a basis for calculating the flow of people in a certain area. Since the positioning data can include geographic location data such as longitude components and latitude components, a longitude and a latitude together determine the exact location of a location on the earth. For example, the average value of each component may be separately calculated according to each position, and the average value of each component is combined into a central position data as the position of each target class.

Specifically, after obtaining at least one target class, an average parameter may be calculated according to a statistical parameter corresponding to each statistical indicator data included in each target class, as a statistical parameter of each target class. For example, performing an arithmetic averaging operation on the statistical parameters corresponding to each statistical indicator data included in each target class to calculate an average parameter; or, for example, for each statistical indicator included in each target class The statistical parameters corresponding to the data are subjected to a weighted averaging operation to calculate an average parameter; and the like, which is not particularly limited in this embodiment.

Optionally, in a possible implementation manner of the embodiment, in 102, the obtained thermal template image, the shape feature and the size feature thereof are in the heat map corresponding to the image, and the image is A certain statistical indicator data, which is capable of displaying the size data of the presentation element for indicating the heat. Generally, the heat map is superimposed by a plurality of circles of different colors, and then the size data of the display elements can be understood as a radius parameter.

Optionally, in a possible implementation manner of this embodiment, in 102, the obtained thermal template image may be used to describe the thermal template image in addition to the shape feature and the size feature. The specified image feature on each pixel.

The specified image feature may include, but is not limited to, at least one of image transparency and image color, which is not specifically limited in this embodiment. Taking image transparency as an example, a typical thermal template image can be as shown in Figure 3A.

In a specific implementation process, prior to 102, the method further includes: creating the thermal template image according to the sample statistical parameter and the corresponding position on the sample image.

Usually, because some of the services involved in the heat map can have different display ratios, for example, map zoom level, etc., using a fixed thermal template image, the heat map can not clearly show the distribution of the statistical data of the image, for example, The display ratio becomes larger, the existing color distribution is more dispersed, and the display ratio becomes smaller, the existing color distribution is particularly concentrated, and the like, thereby causing a decrease in the reliability of the display of the heat map. Therefore, multiple thermal template images can be employed to overcome the above problems.

In this way, since the thermal template image is displayed by using the thermal template image corresponding to the image presentation ratio, it is possible to avoid the distribution of the statistical index data of the image that cannot be clearly displayed due to the use of a fixed thermal template image. Situational problem, able to Further effectively improve the reliability of the heat map display.

For example, according to the sample statistical parameter and the position corresponding to the sample image, according to the presentation parameter of the image and the statistical indicator data of the image, the thermal image is used for trial and error and adjustment until the heat map can be clearly displayed. The distribution of the statistical indicator data of the image, and the adjustment result at this time is taken as the thermal template image. The presentation parameters of the image may include, but are not limited to, the presentation ratio of the image, which is not specifically limited in this embodiment. The presentation ratio of the image refers to the display scale of the enlarged or reduced image, for example, the map zoom level of the electronic map.

Alternatively, for example, the thermal template image may be created by using a positive example training sample. Before creating the thermal template image, the operator may adjust the thermal image according to the presentation parameters of the image and the statistical indicator data of the image in advance to obtain a thermogram corresponding to the image that satisfies the training intention. Then, the presentation parameters of the images corresponding to the thermograms and the thermodynamic images after the adjustment are recorded, and the recorded data is used as a positive training sample. The presentation parameters of the image may include, but are not limited to, the presentation ratio of the image, which is not specifically limited in this embodiment.

The presentation ratio of the image refers to the display scale of the enlarged or reduced image, for example, the map zoom level of the electronic map. Taking Baidu map as an example, it has 17 map zoom levels, ie, level 3 to level 20. The corresponding map zoom ratio is the ratio of the display distance of 1 cm to the actual distance: 1:20 m, 1:50 m, 1: 100m, 1:200m, 1:500m, 1:1km, 1:2km, 1:5km, 1:10km, 1:20km, 1:25km, 1:50km, 1:100km, 1:200km, 1:500km, 1:1000km and 1:2000km. Taking image transparency as an example, the thermal template images corresponding to the six different map zoom ratios may be respectively shown in FIGS. 3B to 3G.

In another specific implementation process, in 102, a display ratio of the image may be specifically obtained, and then, the thermal template image may be obtained according to the display ratio.

Optionally, in a possible implementation manner of the embodiment, in 103, a specified image feature of each pixel on the thermal template image may be obtained according to the thermal template image. Further, thermal data of each of the pixels may be obtained according to the statistical indicator data and the specified image feature of each pixel. Then, the presentation color of each pixel may be obtained according to the thermal data of each pixel, and the heat map corresponding to the image is presented according to the presentation color of each pixel. Only the pixels on the thermal template image can obtain the corresponding display color by the above scheme, and the display colors of other pixels not on the thermal template image can be the default colors, for example, colorless, etc.

In this way, since the attenuation relationship of the set statistical indicator data is no longer completely relied upon, the thermal template image is combined with the thermal template image to make the operation object change from pixel to image, and therefore, the display efficiency of the heat map can be effectively improved.

Specifically, after obtaining the specified image feature of each pixel, the pixel may be obtained according to the statistical indicator data, the specified image feature of each pixel, and the adjustment weight corresponding to each specified image feature. Thermal data. It can be understood that the adjustment weight may be an empirical value or an empirical formula, which is not specifically limited in this embodiment.

Specifically, since the heat map is superimposed on the image for display, in order to completely cover the image as the basis of the overlay, in addition to performing the heat map corresponding to the image according to the display color of each pixel In addition to the presentation, it is further required to further perform the presentation of the heat map corresponding to the image according to the display transparency of each of the pixels.

In a specific implementation process, the transparent display of each pixel can be specifically obtained. And, in turn, the heat map corresponding to the image may be presented according to the presentation color of each pixel and the display transparency of each pixel. Only the pixels on the thermal template image can obtain the corresponding display transparency by the above scheme, and the display transparency of other pixels not on the thermal template image can be the default transparency, for example, the transparency is 100% or the like.

For example, a preset preset transparency may be specifically set as the presentation transparency of each of the pixels.

In this way, the entire heat map adopts a uniform transparency, is simple to set up, and is easy to operate, and can effectively improve the display efficiency of the heat map.

Alternatively, for example, the display transparency of each pixel may be obtained according to the thermal data of each pixel and the preset at least two preset transparencys.

In this way, the entire heat map adopts a plurality of different transparencys, which can further clearly display the distribution of statistical indicator data of the image, and can effectively improve the reliability of the heat map display.

Specifically, a maximum value of the transparency can be set, which is a maximum corresponding to the display transparency of the image indicating the highest heat in the heat map corresponding to the image. Reference.

Between the maximum value of the transparency and the minimum value of the default display transparency 0, a plurality of transparency value levels may be divided according to the display requirements of the heat map, and each transparency value level corresponds to a gradually changing transparency, wherein each The transparency can be marked with a single value.

If the statistical indicator data corresponding to an area on the image is greater than or equal to the maximum reference value, the display transparency corresponding to the statistical indicator data displayed in the area may be set to indicate the highest transparency display transparency; If the statistical indicator data corresponding to an area is smaller than the maximum reference value, the statistical indicator data displayed by the area may be The transparency should be set to the level of transparency value that the statistical indicator data actually corresponds to.

Specifically, in addition to setting a maximum value for exhibiting transparency, a minimum value for exhibiting transparency can be further set. The minimum value of the display transparency refers to a minimum reference value corresponding to the display transparency for indicating the lowest heat for a certain statistical indicator data of the image in the heat map corresponding to the image.

Between the maximum value of the transparency and the minimum value of the transparency, a plurality of transparency value levels may be divided according to the display requirements of the heat map, and each transparency value level corresponds to a gradually changing transparency, wherein each transparency is displayed. Specifically, it can be marked with a numerical value.

If the statistical indicator data corresponding to an area on the image is greater than or equal to the maximum reference value, the display transparency corresponding to the statistical indicator data displayed in the area may be set to indicate the transparency of the highest heat; if the image is on a certain If the statistical indicator data corresponding to the area is less than or equal to the maximum reference value, the display transparency corresponding to the statistical indicator data displayed in the area may be set to indicate the transparency of the lowest heat; if an area on the image corresponds to If the statistical indicator data is greater than the minimum reference value and is less than the maximum reference value, the transparency corresponding to the statistical indicator data displayed in the area may be set as the transparency value level corresponding to the statistical indicator data.

In the specific implementation, it is also required to further preset the correspondence between the statistical indicator data and the transparency value level. In this way, according to the correspondence, the transparency value level corresponding to the statistical indicator data within the specified range can be obtained. Specifically, before the obtaining of the plurality of statistical indicator data of the image, the correspondence between the statistical indicator data and the transparency value level may be set according to the experience requirement of the experience or the heat map, or several statistical indicators of the image may also be obtained. After the data, based on these statistical indicator data, set the statistical indicator data and The correspondence between the brightness value levels is not particularly limited in this embodiment.

In another specific implementation process, a thermal data may be pre-defined to a lookup table for displaying colors. After obtaining thermal data of each pixel, the obtained thermal data of each pixel may be used to pass the lookup table. Difference processing is performed to obtain a presentation color corresponding to each pixel.

In the specific implementation process, taking the flow of people as the statistical indicator data as an example, the color that the heat map can display can be several cases:

Case 1: The heat map only shows a single color, and the depth of the color indicates the level of heat.

In this case, in the heat map corresponding to the image, the color that can be displayed in a certain area of the image to indicate the highest heat may be red, and the darker the color, the higher the heat of the area, the lighter the color. The lower the heat in this area. The so-called heat refers to a degree that can reflect the value of the statistical indicator data is large or small.

Case 2: The heat map can display two or more colors, and the heat is indicated by different colors.

In this case, in the heat map corresponding to the image, the color that can be displayed in a certain area of the image to indicate the highest heat may be red, the orange may indicate the heat, and the green may indicate the lowest heat. It can be understood that a plurality of transition colors can be included between the two colors.

It can be understood that the color that the thermogram can display can further combine the above two cases.

For example, in the lookup table, only the maximum value of the display color may be defined, which is used to represent a certain statistical indicator data of the image in the heat map corresponding to the image. A maximum reference value corresponding to the color indicating the highest heat. Between the maximum value of the display color and the minimum value 0 of the default display color, according to the display requirements of the heat map, a plurality of color value levels are divided, and each color value level corresponds to a gradually changing one of the display colors.

Each of the presentation colors can be specifically marked with a set of parameter values. For example, the parameter values may include red (R) component values, green (G) component values, and blue (B) component values; or, for example, the parameter values may also include red (R) component values, green ( G) component values and blue (B) component values, as well as luminance component values.

If the statistical indicator data corresponding to an area on the image is greater than or equal to the maximum value of the color, the color corresponding to the statistical indicator data displayed in the area may be set to a color indicating the highest heat; otherwise, if the image is on the image If the statistical indicator data corresponding to a certain area is smaller than the maximum value of the color, the color corresponding to the statistical indicator data displayed in the area may be set to a color value level corresponding to the statistical indicator data.

Or, for example, in the lookup table, in addition to defining a maximum value of the presentation color, it is also necessary to define a minimum value of the presentation color. The minimum value of the color to be displayed refers to a maximum reference value corresponding to a color indicating the highest heat for a certain statistical index data of the image in the heat map corresponding to the image. Between the maximum value of the display color and the minimum value of the display color, according to the display requirements of the heat map, a plurality of color value levels are divided, and each color value level corresponds to a gradually changing one of the display colors.

If the statistical indicator data corresponding to an area on the image is greater than or equal to the maximum color a value, the color corresponding to the statistical indicator data displayed in the area may be set to a color indicating the highest heat; if the statistical indicator data corresponding to an area on the image is less than or equal to the minimum value of the color, the The color corresponding to the statistical indicator data displayed in the area is set to a color indicating the lowest heat; if the statistical indicator data corresponding to an area on the image is larger than the minimum value of the color and smaller than the maximum value of the color, The color corresponding to the statistical indicator data displayed in the area is set to the color value level corresponding to the statistical indicator data.

In the specific implementation, it is further required to further preset the correspondence between the statistical indicator data and the color value level. In this way, according to the correspondence, the color value level corresponding to the statistical indicator data within the specified range can be obtained. Specifically, before the obtaining of the plurality of statistical indicator data of the image, the correspondence between the statistical indicator data and the color value level may be set according to the experience of the experience or the heat map, or several statistical indicators of the image may also be obtained. After the data, the correspondence between the statistical indicator data and the color value level is set according to the statistical indicator data, which is not specifically limited in this embodiment.

Specifically, since the heat map is superimposed on the image for display, the display of the heat map needs to be consistent with the manner in which the image is displayed, so that the heat map and the image can be accurately superimposed, and the heat map can be effectively improved. Sex.

Taking an electronic map as an example, the display mode is a grid image mode, then the heat map can be displayed in a raster image manner, and the resolution of the raster image of the heat map is consistent with the resolution of the grid image of the electronic map. For example, the resolution of each raster image can be 256x256 or the like. The server pre-renders the raster image (the raster image of the electronic map or the raster image of the heat map), and the application requests the raster data of the raster image from the server, and then the application presents the requested raster data as a visualization. Grid image. Wherein, the grid picture can be For a detailed description of the line number, the column number, and the level of the tile picture, refer to related content in the prior art, and details are not described herein again.

In the following, taking the flow of a certain area on the Baidu map as the statistical indicator data as an example, the description of the heat map display effect provided by the technical solution of the present invention is performed.

FIG. 4A is a schematic diagram showing the effect of the thermal map of the Beijing South Railway Station area in the prior art without using the thermal template image; FIG. 4B is a technical solution showing the fixed thermal template image in the corresponding embodiment of FIG. 1; Schematic diagram of the effect of the heat map of the Beijing South Station area. The railway station area is the most densely populated area, and most of the area in the heat map should show colors such as dark colors indicating the highest heat or higher heat, and display transparency such as low transparency indicating the highest heat or higher heat. , to show. 4B is compared with FIG. 4A, in the heat map shown in FIG. 4B, the color distribution is relatively uniform, the color difference is more obvious, and the heat indicated by the color and the transparency is consistent with the actual situation, and the flow of people can be clearly displayed on the Baidu map. Distribution, so that the characteristics of the distribution of human flow can be obtained, and the characteristics of the distribution of human flow obtained are in line with the actual distribution of human flow, which can reflect the true value of the thermogram; while in the thermogram shown in Figure 4A, the color difference is not obvious. And the heat indicated by color and transparency does not reach the actual situation. It is impossible to clearly show the distribution of human flow on Baidu map. It is not easy to get the characteristics of the distribution of people flow, and the characteristics of the distribution of people flow in time, and it does not conform to the actual flow of people. The distribution does not reflect the true value of the heat map.

Similarly, showing the difference in effects, it is also possible to continue to refer to FIGS. 4D and 4C, and FIGS. 4F and 4E.

FIG. 5A is a schematic diagram showing the effect of the thermal map of the Wangfujing area displayed by the map zoom level of the electronic map in the prior art without using the thermal template image; FIG. 5B is an embodiment of the embodiment corresponding to FIG. The map's map zoom level is 15 The thermal template image shows the effect of the heat map of the Wangfujing area.

FIG. 5C is a schematic diagram showing the effect of the thermal map of the Wangfujing area displayed by the map zoom level of the electronic map in the prior art without using the thermal template image; FIG. 5D is an embodiment of the embodiment corresponding to FIG. The map zoom level of the map is a schematic diagram of the heat map of the Wangfujing area displayed by the thermal template image corresponding to the 14th level.

FIG. 5E is a schematic diagram showing the effect of the thermal map of the Wangfujing area displayed by the map zoom level of the electronic map in the prior art without using the thermal template image; FIG. 5F is an example of the embodiment corresponding to FIG. The map zoom level of the map is a schematic diagram of the heat map of the Wangfujing area displayed by the thermal template image corresponding to the 13th level.

In the heat maps shown in FIG. 5A, FIG. 5C and FIG. 5E, the color distribution of each heat map is relatively uniform, the color difference is more obvious, and the heat indicated by the color and the transparency is consistent with the actual situation, and can be clearly displayed on the Baidu map. Show the distribution of people flow. The color distribution and transparency distribution of the corresponding areas in each heat map are consistent, and the consistent distribution of human flow can be clearly displayed on the Baidu map, so that the characteristics of the uniform flow distribution can be obtained, and the obtained flow distribution is obtained. The characteristics are in line with the actual distribution of people flow, which can reflect the true value of the heat map.

In the heat maps shown in FIG. 5B, FIG. 5D and FIG. 5F, only the individual heat maps (the heat map shown in FIG. 5B) have a uniform color distribution, the color difference is more obvious, and the heat and the actuality indicated by the color and the transparency are actual. The situation is consistent, and the distribution of people flow can be clearly displayed on Baidu map, so that the characteristics of the distribution of people flow can be obtained, and the characteristics of the distribution of the obtained flow are in line with the actual distribution of people flow, and can reflect the true value of the heat map. However, there is still a large difference in the color of the heat map (the heat map shown in Figure 5D and Figure 5F), and the heat indicated by the color and transparency does not reach the actual situation, and it cannot be clearly Baidu map shows the distribution of human flow, it is not easy to get the characteristics of the distribution of people flow, the characteristics of the distribution of people flow in time, and it does not meet the actual distribution of people flow, and does not reflect the true value of the heat map. In addition, the color distribution and transparency distribution of the corresponding areas in each heat map are inconsistent, and it is impossible to display a consistent distribution of human flow on Baidu map, and it is impossible to obtain a consistent distribution of human flow, and does not reflect the true value of the heat map. .

In this embodiment, by obtaining statistical indicator data of an image, and obtaining a thermal template image, the thermal template image is used to describe a specified image feature of each pixel on the thermal template image, so that according to the statistical indicator data and The thermal template image exhibits a thermal map corresponding to the image, and since the attenuation relationship of the set statistical indicator data is no longer completely relied on, the thermal template image is combined with the thermal template image to display the thermal map, thereby avoiding the existing In the technology, the thermal map caused by the attenuation relationship of the set statistical indicator data cannot clearly show the distribution of the statistical indicator data of the image, thereby improving the reliability of the heat map display.

In addition, according to the technical solution provided by the present invention, since the thermal template image corresponding to the display ratio of the image is used to display the thermal map, the statistical index data of the image can be clearly displayed under each display ratio of the image. Can effectively improve the heat map Utilization rate.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

FIG. 2 is a schematic structural diagram of a display device of a heat map according to another embodiment of the present invention, as shown in FIG. 2 . The presentation device of the thermogram of the present embodiment may include an obtaining unit 21, a template unit 22, and a presentation unit 23. An obtaining unit 21, configured to obtain statistical indicator data of an image; a template unit 22, configured to obtain a thermal template image, wherein the thermal template image is used to describe a specified image feature of each pixel on the thermal template image; and a presentation unit 23, And a method for displaying a heat map corresponding to the image according to the statistical indicator data and the thermal template image.

It should be noted that part or all of the display device of the heat map provided by this embodiment may be an application located in a local terminal, or may be a plug-in or a software development kit (Software Development) installed in an application located in the local terminal. The functional unit such as Kit, SDK, or the like may be a processing engine located in the network side server, or may be a distributed system located on the network side, which is not specifically limited in this embodiment.

Optionally, in a possible implementation manner of the embodiment, the statistical indicator data may include, but is not limited to, a statistical parameter and a location corresponding to the image; the obtaining unit 21 may be specifically configured to be used according to The statistical indicator data to be processed is subjected to density-based clustering processing at a position corresponding to the image to obtain at least one candidate class; according to statistical indicator data included in each candidate class of the at least one candidate class Obtaining at least one target class by a quantity and a preset number threshold; obtaining each target according to a position corresponding to statistical indicator data included in each target class in the at least one target class on the image a location of the class; obtaining, according to the statistical parameter corresponding to the statistical indicator data included in each target class in the at least one target class, a statistical parameter of each target class; and statistics according to each target class The parameter and the location of each of the target classes obtain statistical indicator data for each of the target classes.

Optionally, in a possible implementation manner of the embodiment, the template unit 22 may be specifically configured to obtain a presentation ratio of the image; and obtain the thermal template image according to the presentation ratio.

Optionally, in a possible implementation manner of the embodiment, the presentation unit 23 is specifically configured to obtain, according to the thermal template image, a specified image feature of each pixel on the thermal template image; Deriving the statistical index data and the specified image feature of each pixel to obtain thermal data of each of the pixels; obtaining, according to the thermal data of each pixel, a presentation color of each of the pixels; and The color of each pixel is displayed, showing the heat map corresponding to the image.

In a specific implementation process, the presentation unit 23 may be specifically configured to obtain display transparency of each of the pixels; and display the display according to the presentation color of each pixel and the presentation transparency of each pixel. The heat map corresponding to the image.

For example, the presentation unit 23 may be specifically configured to use a preset transparency set in advance as the presentation transparency of each pixel.

Or, for example, the presentation unit 23 may be specifically configured to obtain display transparency of each pixel according to the thermal power data of each pixel and the preset at least two preset transparencys.

Optionally, in a possible implementation manner of the embodiment, the specified image feature may include, but is not limited to, at least one of image transparency and image color, which is not specifically limited in this embodiment.

Optionally, in a possible implementation manner of the embodiment, the template unit 22 may be further configured to create the thermal template image according to a sample statistical parameter and a position corresponding to the sample image.

It should be noted that the method in the embodiment corresponding to FIG. 1 can be implemented by the display device of the heat map provided in this embodiment. For details, refer to related content in the embodiment corresponding to FIG. 1, and details are not described herein again.

In this embodiment, the statistical indicator data of the image is obtained by the obtaining unit, and the thermal template image is obtained by the template unit, wherein the thermal template image is used to describe the specified image feature of each pixel on the thermal template image, so that the display unit can Displaying the thermal map corresponding to the image according to the statistical indicator data and the thermal template image, and instead of completely relying on the attenuation relationship of the set statistical indicator data, combining the thermal template image to display the thermal map Therefore, it is possible to avoid the problem that the thermal map cannot completely clearly display the distribution of the statistical indicator data of the image due to the dependence of the attenuation relationship of the set statistical indicator data in the prior art, thereby improving the reliability of the heat map display. .

In addition, with the technical solution provided by the present invention, since the system is no longer completely dependent on the system The attenuation relationship of the indicator data is combined with the thermal template image to display the thermogram, so that the operation object is changed from pixel to image, and therefore, the efficiency of the heat map can be effectively improved.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present invention, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one Places, or they can be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; 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 are modified, or the equivalents of the technical features are replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A method for displaying a heat map, comprising:

Obtaining statistical indicator data of the image;

Obtaining a thermal template image for describing a specified image feature of each pixel on the thermographic image;

And displaying a heat map corresponding to the image according to the statistical indicator data and the thermal template image.
The method according to claim 1, wherein the statistical indicator data comprises a statistical parameter and a position corresponding to the image; and the obtained statistical indicator data of the image comprises:

Performing density-based clustering processing according to the position of the statistical indicator data to be processed on the image to obtain at least one candidate class;

Obtaining at least one target class according to the number of statistical indicator data included in each candidate class of the at least one candidate class and a preset number threshold;

Obtaining a location of each of the target classes according to a location corresponding to the statistical indicator data included in each target class in the at least one target class on the image;

Obtaining, according to the statistical parameter corresponding to the statistical indicator data included in each target class in the at least one target class, the statistical parameter of each target class;

The statistical indicator data of each of the target classes is obtained according to the statistical parameters of each target class and the location of each of the target classes.
The method according to claim 1 or 2, wherein the obtaining the thermal template image comprises:

Obtaining a presentation ratio of the image;

The thermographic template image is obtained according to the presentation ratio.
The method according to any one of claims 1 to 3, wherein the displaying the heat map corresponding to the image according to the statistical indicator data and the thermal template image comprises:

Obtaining a specified image feature of each pixel on the thermal template image according to the thermal template image;

Obtaining thermal data of each pixel according to the statistical indicator data and the specified image feature of each pixel;

Obtaining a presentation color of each of the pixels according to the thermal data of each pixel;

A heat map corresponding to the image is presented according to the presentation color of each pixel.
The method according to claim 4, wherein the displaying the heat map corresponding to the image according to the display color of each pixel comprises:

Obtaining display transparency of each of the pixels;

A heat map corresponding to the image is presented according to the presentation color of each pixel and the presentation transparency of each pixel.
The method according to claim 5, wherein said obtaining transparency of said each pixel comprises:

a preset transparency set in advance as the transparency of each of the pixels; or

The display transparency of each of the pixels is obtained according to the thermal power data of each of the pixels and the preset at least two preset transparencys.
A method according to any one of claims 1 to 6, wherein said specified image feature comprises at least one of image transparency and image color.
A method according to any one of claims 1 to 7, wherein Before obtaining the thermal template image, it also includes:

The thermo template image is created based on sample statistical parameters and corresponding locations on the sample image.
A display device for a heat map, comprising:

Obtaining a unit for obtaining statistical indicator data of an image;

a template unit for obtaining a thermal template image for describing a specified image feature of each pixel on the thermal template image;

And a presentation unit, configured to display a heat map corresponding to the image according to the statistical indicator data and the thermal template image.
The apparatus according to claim 9, wherein the statistical indicator data comprises a statistical parameter and a position corresponding to the image; the obtaining unit is specifically configured to

Performing density-based clustering processing according to the position of the statistical indicator data to be processed on the image to obtain at least one candidate class;

Obtaining at least one target class according to the number of statistical indicator data included in each candidate class of the at least one candidate class and a preset number threshold;

Obtaining a location of each of the target classes according to a location corresponding to the statistical indicator data included in each target class in the at least one target class on the image;

Obtaining, according to the statistical parameter corresponding to the statistical indicator data included in each target class in the at least one target class, the statistical parameter of each target class;

The statistical indicator data of each of the target classes is obtained according to the statistical parameters of each target class and the location of each of the target classes.
The device according to claim 9 or 10, wherein the template unit is specifically used for

Obtaining a representation ratio of the image;

The thermographic template image is obtained according to the presentation ratio.
The device according to any one of claims 9 to 11, wherein the presentation unit is specifically used for

Obtaining a specified image feature of each pixel on the thermal template image according to the thermal template image;

Obtaining thermal data of each pixel according to the statistical indicator data and the specified image feature of each pixel;

Obtaining a presentation color of each of the pixels according to the thermal data of each of the pixels;

A heat map corresponding to the image is presented according to the presentation color of each pixel.
The device according to claim 12, wherein the presentation unit is specifically configured to

Obtaining display transparency of each of the pixels;

A heat map corresponding to the image is presented according to the presentation color of each pixel and the presentation transparency of each pixel.
The device according to claim 13, wherein the presentation unit is specifically configured to

a preset transparency set in advance as the transparency of each of the pixels; or

The display transparency of each of the pixels is obtained according to the thermal power data of each of the pixels and the preset at least two preset transparencys.
Apparatus according to any of claims 9-14, wherein The specified image feature includes at least one of image transparency and image color.
The device according to any one of claims 9 to 15, wherein the template unit is further used for

The thermo template image is created based on sample statistical parameters and corresponding locations on the sample image.
A device that includes:

One or more processors;

Memory

One or more programs, the one or more programs being stored in the memory, when executed by the one or more processors:

Obtaining statistical indicator data of the image;

Obtaining a thermal template image for describing a specified image feature of each pixel on the thermographic image;

And displaying a heat map corresponding to the image according to the statistical indicator data and the thermal template image.
A non-volatile computer storage medium storing one or more programs, when the one or more programs are executed by a device, causing the device to:

Obtaining statistical indicator data of the image;

Obtaining a thermal template image for describing a specified image feature of each pixel on the thermographic image;

And displaying a heat map corresponding to the image according to the statistical indicator data and the thermal template image.