WO2018171152A1

WO2018171152A1 - Writing color setting method and apparatus

Info

Publication number: WO2018171152A1
Application number: PCT/CN2017/103281
Authority: WO
Inventors: 李逸然; 李纯冬
Original assignee: 广州视源电子科技股份有限公司; 广州视臻信息科技有限公司
Priority date: 2017-03-20
Filing date: 2017-09-25
Publication date: 2018-09-27
Also published as: CN106952323A

Abstract

Disclosed are a writing color setting method and apparatus. The method comprises: obtaining feature information and current background colors of input devices used for detecting writing; allocating, based on the current background colors, different candidate colors from a color distribution model for the different feature information; and displaying, according to the candidate colors, the writing generated by the input devices corresponding to the feature information. The technical solution of the present invention can automatically allocate different writing types for different input devices, thus improving operation efficiency and user experience.

Description

Writing track color setting method and device

Technical field

Embodiments of the present invention relate to an application technology of an electronic device, and in particular, to a method and an apparatus for setting a color of a writing track.

Background technique

With the development of electronic device technology, electronic devices with touch functions have been popularized, and electronic whiteboards have also been rapidly developed.

In the electronic whiteboard, the user can freely write, annotate, and modify the newly created page or the opened page of the electronic whiteboard, which is convenient for the user and widely used in classrooms and conferences. In the current electronic whiteboard, multi-party sharing function can be supported, that is, multiple terminals are connected to the electronic whiteboard, and the interface in the electronic whiteboard can be simultaneously displayed in the interface of the terminal, and different users can perform in different terminal interfaces. The operation realizes writing, annotating, and modifying the currently created page or the opened page of the electronic whiteboard.

However, when a whiteboard is shared by multiple parties, it is often possible to distinguish between written content of different users by different users in different areas of the opened interface or by manually switching the color of the writing track in the corresponding device by the user. Such an operation mode may limit the user's writing area or require the user to discriminate the color of the writing track used by other users, thereby selecting the color of the writing track used by the user, which is inefficient in operation and reduces the user experience.

Summary of the invention

The invention provides a method and a device for setting a color of a writing track to improve operation efficiency.

In a first aspect, an embodiment of the present invention provides a method for setting a color of a writing track, the method comprising:

Obtaining feature information and a current background color of an input device for detecting a written trajectory;

Allocating different candidate colors to different feature information from the color distribution model based on the current background color;

And displaying a writing trajectory generated by the input device corresponding to the feature information according to the candidate color.

In a second aspect, an embodiment of the present invention further provides a writing track color setting device, where the device includes:

An information acquiring module, configured to acquire feature information of an input device for detecting a writing track and a current background color;

a color distribution module, configured to allocate different candidate colors to the different feature information from the color distribution model based on the current background color;

And a trajectory display module, configured to display, according to the candidate color, a writing trajectory generated by the input device corresponding to the feature information.

The invention acquires feature information and current background color of an input device for detecting a writing track; assigns different candidate colors to different feature information from the color distribution model based on the current background color; and displays corresponding feature information according to the selected color The writing track generated by the input device can automatically set different writing track colors for different input devices, and the writing track color of each input device is different from the background color, which is convenient for distinguishing the writing content of different users, reducing the frequency or reducing the frequency manually set by the user. Limit the user's writing area to improve operational efficiency and user experience.

DRAWINGS

1 is a flowchart of a method for setting a color of a writing track according to Embodiment 1 of the present invention;

2 is a schematic diagram of establishing connection of multiple input devices according to Embodiment 1 of the present invention;

3 is a schematic diagram of establishing connection of multiple input devices according to Embodiment 1 of the present invention;

4 is a flowchart of a method for setting a color of a writing track according to Embodiment 2 of the present invention;

Figure 5 is a schematic view of an HSV color wheel in Embodiment 2 of the present invention;

6 is a flowchart of a method for setting a color of a writing track according to Embodiment 3 of the present invention;

Figure 7 is a block diagram showing the structure of a writing track color setting device in Embodiment 4 of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It should also be noted that, for ease of description, only some, but not all, of the structures related to the present invention are shown in the drawings.

Embodiment 1

1 is a flowchart of a method for setting a color of a writing track according to a first embodiment of the present invention. The embodiment is applicable to displaying a color of a different writing track for a writing track of different input devices, and the method can be set by the color of the writing track. The device is executed, and specifically includes the following steps:

Step 110: Acquire feature information of an input device for detecting a writing track and a current background color.

The input device may be a smart terminal such as a smart phone or a tablet computer. The smart terminal has a writing track input function, such as a touch screen, and obtains a writing track by detecting and acquiring operation information on the touch screen. The touch screen can be a touch screen of a capacitive touch screen, a resistive touch screen or an infrared touch screen, which is not limited by the present invention. For infrared touch screens, infrared touch screen tops There is a circuit board frame, and an infrared emitting tube and an infrared receiving tube are mounted on the outer frame of the circuit board, and the touch points are detected and positioned by an infrared matrix densely arranged in the horizontal and vertical directions. When a finger, a pen, or any object that blocks light is touched on the touch screen, two infrared rays in the horizontal and vertical directions of the position are blocked, and the position of the touched point can be determined, and the touched point is calculated on the touch screen. The position on the upper side, thus getting the writing track. After the writing track is obtained, the obtained writing track is displayed on the position where the touch point is calculated on the touch screen.

For example, after the writing track is obtained, the writing track is compared with the writing track in the standard writing track library to obtain a corresponding standard writing track. If the writing track is text, the writing and writing in the writing track can be written. The standard Song text in the track library is compared, and the corresponding standard Song text in the writing track library is displayed in the corresponding position.

Preferably, operations such as dragging, enlarging or reducing are performed in the input device to facilitate input of the writing track.

Exemplarily, the feature information of the input device may be an InteRnational Mobile Equipment Identity (IMEI), a Central Processing Unit (CPU) serial number, and a Media Access Control Address (MAC Address). Or information such as an Internet Protocol Address (IP Address), or a combination of multiple information or specific form information generated according to a specific algorithm according to a plurality of information, so that the feature information can uniquely identify the input device as an input device identifier. .

By obtaining the color of each pixel in the current screen area of the input device or each pixel in the preset area, the color used in the current background can be determined, that is, the current background color is obtained.

Preferably, after obtaining the color of each pixel in each pixel point or the preset area in the current screen area of the input device, the number of each color in the acquired color may be counted in the current screen area. If the proportion of all the pixels in the prime point or the preset area is greater than the third preset threshold, the color is determined as the current background color, and the background color is avoided to ensure the distribution efficiency of the selected color. .

For example, the current background color can also be obtained by reading the pre-stored current background color. For example, if the preset background is pre-stored and the corresponding background color is saved, the preset background can be obtained when the preset background is used. The corresponding background color.

It should be noted that the current background is the content displayed on the display screen other than the writing track.

Preferably, the input devices for detecting the writing trajectory establish a connection in a certain manner, and after the connection is established, the same picture can be displayed in each input device.

There are many implementations for establishing a connection for each input device, which is not limited by the present invention. If an initiating connection application is installed in an input device, an application corresponding to the initiating connection application is installed in the other input device, if an input device that initiates the connection application is installed and another device to which the corresponding application is installed The input device respectively starts the respective application, or after the application is started and the corresponding password is input, the other input device to which the corresponding application is installed is connected with the input device on which the connection application is launched, and after the connection is established, the connection is installed. The other input device corresponding to the application can display the screen displayed by the input device with the initiated connection application installed in real time, and the input device installed with the initiated connection application can display the writing track generated by all the input devices in real time; The same application is installed, and all input devices that launch the application or enter the same password in the application establish a connection.

Step 120: Assign different candidate colors to different feature information from the color distribution model based on the current background color.

The color distribution model is a preset color model including a plurality of colors to be selected, such as a hue circle or a color list.

Based on the obtained current background color, the candidate color different from the current background color may be obtained from the color model, and different candidate colors may be assigned to the feature information of different input devices, thereby realizing automatic feature information for different input devices. Different candidate colors are assigned, and the assigned candidate color is different from the current background color.

Preferably, after the candidate color in the color distribution model is assigned to the feature information of the input device, the candidate color is marked in the color model, so that the next time the allocation process is performed, the color distribution model may be directly excluded from the color distribution model. The assigned color to be selected does not need to traverse the entire color to improve the distribution efficiency.

Preferably, the writing track color of the input device can also be manually set. For example, if the candidate color in the color model is placed in the form of a list on the operation interface of the input device, the color distribution model is input according to the user's selection in the list. The feature information of the device is assigned a correspondingly selected color to be manually set, so that the user can set the color of the desired writing track by himself.

Step 130: Display a writing trajectory generated by the input device corresponding to the feature information according to the color to be selected.

The feature information of the input device is used as the input device identifier to uniquely identify the input device. After the different feature colors are assigned different candidate colors, if the writing track is detected on the input device, the feature information of the input device is allocated. The candidate color displays the writing trajectory produced by the input device. FIG. 2 and FIG. 3 are schematic diagrams of establishing connection of multiple input devices according to the embodiment. In Fig. 2, different colors are indicated by different lines. Both input device B and input device C establish a connection with input device A, and input device A, input device B, and input device C are assigned a dotted line.

dotted line

And solid line

The displayed color to be selected, the current display content of the input device A, the input device B, and the input device C are a certain window and a writing track detected by each input device, wherein the ellipse, the rectangle, and the circle are the display device A and the input device, respectively. B and the writing track detected by the input device C, and the rest are the contents of the window. After the input device D establishes a connection with the input device A, acquiring the feature information of the input device D and the background color in the window, and assigning the input device D to the input device A and the input device B from the color distribution model based on the current background color. , input device C and the desired color of the current background color. As shown in FIG. 3, a dotted line is assigned to the feature information of the input device D.

The color represented by the input device D is a triangle, and the writing track detected by the input device D is displayed at the corresponding position of the display screen of each input device, and the color to be selected is allocated according to the feature information of the input device D. When the writing track is displayed, the writing trajectories of different users can be easily distinguished by different colors. In a meeting or classroom, each user can write at any position of the input device, even if the writing track display positions generated by different input devices have overlapping portions, the different track colors can quickly distinguish the writing tracks detected by different input devices. There is no need to limit the writing area, which is conducive to the interaction of the meeting or classroom personnel, improve the efficiency of the meeting or classroom, and at the end of the meeting or class, you can quickly find out the provider of a writing track according to the color of the writing track, and facilitate the meeting or classroom staff. Records to facilitate follow-up work. And the user does not need to discriminate the colors used by other users to improve the user experience.

Preferably, if the input device is disconnected, such as closing the corresponding application, the flag of the candidate color assigned to the feature information of the input device is removed, so that the candidate color can be re-allocated to other input devices.

The embodiment of the present invention obtains feature information and current background color of an input device for detecting a written trajectory; assigns different candidate colors to different feature information from the color distribution model based on the current background color; and displays feature information according to the to-be-selected color. The writing track generated by the corresponding input device can automatically set different writing track colors for different input devices, and the writing track color of each input device is different from the background color, which is convenient for distinguishing the writing content of different users, and reducing the frequency manually set by the user. Or reduce the restrictions on the user's writing area, improve operational efficiency and user experience.

Embodiment 2

4 is a flow chart of a method for writing track color according to Embodiment 2 of the present invention. This embodiment is optimized on the basis of the first embodiment. As shown in FIG. 4, the method includes:

Step 210: Acquire feature information of an input device for detecting a writing track and a current background color.

Step 220: Obtain an angle of the current background color in the hue circle.

The hue ring refers to a ring composed of different colors, such as a twelve-phase phase ring, a twenty-four color phase ring or a forty-eight color phase ring.

Figure 5 is a schematic illustration of an HSV color wheel in which the colors are not shown. As shown in Figure 5, in the HSV (Hue Saturation Value) color wheel, the circle represents the hue, an independent triangle represents the saturation and hue, and when the color is selected, the hue can be determined in the ring first. And determine the saturation and hue in the triangle so that one color can be uniquely determined.

Preferably, a hue representing the hue in the HSV color wheel is used as the hue circle, and the values of saturation and hue are set, so that a hue loop can be uniquely determined. With the hue ring, the colors corresponding to any different angles are different, and more colors to be selected are available, and different input colors can be assigned to more input devices.

If a certain color is known, ie (r, g, b) is known, its angle in the hue circle can be calculated by the following formula:

Exemplarily, a preset background may be pre-stored, and the background color of each preset background is in the hue circle. The angle is recorded, and the angle of the current background color in the hue circle can be obtained according to the preset background selected by the user.

Preferably, after obtaining the angle of the current background color in the hue circle, the angle is marked to avoid assigning the candidate color corresponding to the angle on the hue ring to the feature information of the input device.

Preferably, the writing track color of the input device can be manually set so that the user can set the desired writing track color by himself. For example, the candidate color on the hue circle is displayed on the screen of the input device in a color list, and the candidate color selected by the user in the color list is assigned to the feature information of the input device, and the candidate color is obtained at the same time. The angle is marked in the angle in the hue circle.

Step 230: Assign different angles to different feature information from the reference angle according to the first preset angle interval.

Illustratively, a plurality of reference angles may be provided, such as a first reference angle of α1, a second reference angle of α2, . . ., and an nth reference angle of αn. Then, any reference angle can be automatically assigned to the feature information of the first input device, and when the angle is assigned to the feature information of the next input device, the feature information of the input device can be assigned with the feature information of the previous input device. The angles differ by an angle of the first predetermined angular interval in a clockwise or counterclockwise direction, thereby avoiding assigning similar candidate colors to different feature information.

The first input device can be the first boot application or the first input device that enters a password in the launched application.

Preferably, the first reference angle may be determined according to an angle assigned by the feature information of the first input device. If the angle is automatically assigned to the feature information of the first input device or the angle of the candidate color set by the user is assigned to the feature information of the first input device, the feature information of the first input device is allocated. The angle is determined as the first reference angle. The second reference angle can be at the first reference angle The preset reference angle is increased. If the preset angle is 15 degrees or -15 degrees, the third reference angle may be half of the sum of the first reference angle and the second reference angle, and the fourth reference angle may be the first reference. The half of the sum of the angle and the third reference angle is the same, and the nth reference angle is half of the sum of the first reference angle and the n-1th reference angle, so that a plurality of reference angles can be automatically obtained.

Preferably, when the input device establishing the connection is disconnected, its feature information assignment angle is removed from the marked angle so that the angle can be reallocated to the input device establishing the connection. For example, whenever there is an input device establishing a connection, starting from the first reference angle, according to the first preset angular interval, it is sequentially detected whether the angle has been marked, and if the angle is not marked, the angle is assigned to the input. Feature information of the device, if the angle has been marked, continue to detect whether the next angle that is different from the angle by the first preset angle interval has been marked until an unmarked angle is detected, and assign it to the input device Characteristic information.

Step 240: If the angle differs from the angle of the current background color in the hue circle by less than the second preset angle interval or the angle is an already allocated angle, the angle is filtered and the angle is re-assigned to the feature information according to the reference angle.

When an angle is assigned to the feature information of the input device, it is determined whether the angle is different from the angle of the acquired background color in the hue circle by less than the second preset angular interval or an already assigned angle to avoid assigning the feature information to the background color. Or the color information of the other input device is similar or the same, wherein the second preset angle interval is smaller than the first preset angle interval.

Preferably, if the corresponding angles in the hue circle have all been allocated from the reference angle according to the first preset angle interval, different angles are assigned to different feature information in order from the next reference angle.

Exemplarily, the first preset angle interval is 30°, and the angle is the clockwise feature information. When the angle allocated to the first input device is 0°, the first reference angle is 0°, and the second reference angle is 15°, The third reference angle is half of the sum of the first reference angle and the second reference angle, that is, 7.5°, when the connection is established on the thirteenth input device, it can be detected that the first reference angle is 0°, and the difference is 30° in order. If the corresponding angles have been all allocated, it is determined whether the second reference angle 15° is different from the angle of the current background color in the hue circle, and if not, the second reference angle 15° is assigned to the feature information. If yes, proceed to determine whether the angle of the first predetermined angle interval between the first reference angle and the second reference angle of 15° is 45°, and whether the angle of the current background color in the hue circle is different from the second preset angle interval or whether For the already assigned angle, until the angle at which the angle of the current background color in the hue circle differs by more than or equal to the second predetermined angular interval and is not assigned is detected, the angle is assigned to the feature information of the input device establishing the connection.

Step 250: Assign a candidate color corresponding to an angle assigned to different feature information in the hue circle to different feature information.

The color corresponding to the angle of the ring representing the hue in the HSV color wheel can be calculated by the following formula:

p=v×(1-s);

q=v×(1-f×s); t=v×(1-(1-f)×s)

Where h ∈ [0, 360), s ∈ [0, 1], v ∈ [0, 1], h, s, and v are hue, saturation, and hue, respectively.

According to the above formula, the hue h, the saturation s, and the hue v are known, and (r, g, b) can be obtained, so that the h h can be different under the condition that the saturation s and the hue v are constant. Different angles corresponding to the selected face The color is assigned to the corresponding feature information.

Step 260: Display a writing trajectory generated by the input device corresponding to the feature information according to the color to be selected.

By using the hue circle as the color distribution model, the embodiment of the present invention can assign different angles to the feature information of different input devices, conveniently distinguishing the writing content of different users, reducing the frequency manually set by the user or reducing the limitation on the writing area of the user. Improve operational efficiency and user experience. And any of the different angles in the hue circle correspond to different colors, and more input colors can be assigned to more input devices.

Embodiment 3

FIG. 6 is a flowchart of a method for setting a color of a writing track according to Embodiment 3 of the present invention. This embodiment is optimized on the basis of the above, as shown in FIG. 6, the method includes:

310. Acquire feature information of an input device for detecting a writing track and a current background color.

320. Filter the to-be-selected color and the assigned candidate color that are different from the RGB value of the current background color by less than the first preset threshold from the candidate color list to obtain a first candidate color list.

It should be noted that the RGB value in the present invention is composed of three values of R value, G value and B value, and can be expressed as (R, G, B), where R represents the luminance of the red component and G represents the green component. Brightness, B represents the brightness of the blue component. Normally, R, G, and B each have 256 levels of brightness, represented by the numbers 0-255. Any color can be represented by an RGB value (R, G, B). For example, the RGB value of pure red is (255, 0, 0), and the RGB value of pure white is (255, 255, 255).

The color to be selected in the to-be-selected color list may include all the colors of the RGB values, so that any writing track color can be assigned to the input device, or the color to be selected in the saved candidate color list is a preset RGB value, which satisfies the basic Writing track color assignment requirements.

Preferably, the RGB values of any two candidate colors in the candidate color list are different from each other by a first preset threshold. If the first preset threshold is 20, the color may be started from a color of RGB (0, 0, 0). , in turn, R, G, and B are incremented by 25 RGB values corresponding colors into the candidate color list, or from RGB is (0,0,0) color, and R, G, and B are sequentially incremented by 30 RGB. The color corresponding to the value is placed in the list of selected colors. By comparing the RGB values of any two candidate colors in the candidate color list by more than the first preset threshold, the colors to be selected in the selected color list can be contrasted with each other, and the similar colors are filtered out, thereby making different input devices The color of the writing track is easier to distinguish and enhance the user experience.

In order to avoid assigning the same color to the input device that is the same or similar to the background color, the color to be selected that differs from the RGB value of the background color by less than the first preset threshold is filtered, and to avoid assigning to different input devices. The same candidate color is selected, and the assigned candidate color in the candidate color list is filtered out. Thereby obtaining a first candidate color list.

Illustrative, the dotted line in Figure 2

Indicates yellow and dashed lines

If it is pure black, the color of the current window is yellow and pure black. The corresponding RGB values are (255, 255, 0) and (0, 0, 0) respectively. If the second preset threshold is 50, then R, G, and B of the color to be selected in the candidate color list may be filtered out with any of the acquired background colors whose R, G, and B corresponding differences are less than 50. If the RGB value of (255, 215, 0) is the candidate color in the candidate list, the difference between R, G, and B and the yellow background R, G, and B in the acquired background color is 0. , 40 and 0, all three differences are less than 50, so the gold with RGB values of (255, 215, 0) is filtered out of the candidate list. For example, the R, G, and B of the color to be selected in the candidate color list and any two differences between the R, G, and B corresponding to any acquired background color may be smaller than the second preset threshold. Select the color filter. If the RGB value is (205, 205, 205), the silver color is the candidate color in the candidate list, because R, G, and B in the RGB value correspond to the pure black R, G, and B in the acquired background color. The difference is in the order of 45, 45 and 0. wherein the difference between R and G is less than 50, the silver with the RGB value of (205, 205, 205) can be filtered out from the list of selected colors.

Exemplarily, the list of candidate colors may be established by a dictionary operation in Python, wherein the dictionary is also referred to as an associative array or a hash table, and the dictionary appears in pairs by a key and a corresponding key value, and will be selected in the list of colors to be selected. The RGB values corresponding to the selected colors are used as keys in the dictionary, and the key values corresponding to each key default to 0. If a candidate color is filtered out, the corresponding RGB value of the candidate color can be modified.

Preferably, the color to be selected in the candidate color list does not include colors that are used more frequently, such as white and black, thereby reducing the situation in which the input device is assigned a color similar to the background color.

Step 330: Assign different candidate colors to different feature information from the first candidate color list.

After obtaining the first candidate color list, the feature information of any candidate color to be assigned to the input device may be automatically selected from the candidate colors in the first candidate color list. For example, the feature information of any candidate color assignment value input device is selected from the to-be-selected colors whose corresponding key values are not 0.

Step 340: Display a writing trajectory generated by the input device corresponding to the feature information according to the color to be selected.

In this embodiment, the difference between the RGB values of any two candidate colors in the candidate color list is greater than the first preset threshold, and the characteristic information of each input device is assigned a contrasting color to make it easier to write to different input devices. The trajectory is distinguished by avoiding the background color or the input device by filtering the candidate color and the assigned candidate color that are different from the RGB value of the current background color by the second preset threshold from the candidate color list. Other input devices are similar or the same color to be selected, which automatically assigns different candidate colors to different input devices, which is convenient for distinguishing the writing content of different users, without manual setting or reducing restrictions on the user writing area, improving efficiency and user experience. .

Embodiment 4

FIG. 7 is a schematic structural diagram of a writing track color setting apparatus according to Embodiment 4 of the present invention. The above device is used to implement the writing track color setting method provided by the above embodiment, and the device includes: an information acquiring module 410, a color assigning module 420, and a track display module 430. among them,

An information acquiring module 410, configured to acquire feature information and a current background color of an input device for detecting a writing track;

The color distribution module 420 is configured to allocate different candidate colors to the different feature information from the color distribution model based on the current background color;

The trajectory display module 430 is configured to display a writing trajectory generated by the input device corresponding to the feature information according to the candidate color.

In the above solution, optionally, the color distribution model is a hue circle;

The color distribution module includes:

An angle obtaining unit, configured to acquire an angle of a current background color in the hue circle;

An angle allocating unit, configured to assign different angles to different pieces of the feature information from the reference angle according to the first preset angle interval;

An angle filtering unit, configured to: if the angle differs from an angle of the current background color in the hue circle by less than a second predetermined angular interval or the angle is an already allocated angle, the angle is filtered and Resolving the angle of the feature information by the reference angle;

And a color distribution unit, configured to allocate, to the different feature information, the to-be-selected color corresponding to the angle allocated in the hue circle for the different feature information.

In the above solution, optionally, the angle allocation unit is further configured to:

According to the first preset angle interval, starting from the reference angle, the corresponding angle in the hue circle is full For partial matching, different angles are assigned to different feature information from the next reference angle.

In the above solution, the color distribution model is a candidate color list, and the RGB values of any two candidate colors in the candidate color list are different from each other by a first preset threshold;

The color distribution module includes:

a color filtering unit, configured to filter the to-be-selected color and the selected candidate color that are different from the RGB value of the current background color by the first preset threshold from the candidate color list, to obtain a first candidate color list;

a color distribution unit, configured to allocate different candidate colors to different feature information from the first candidate color list.

In the above solution, optionally, the current background color is a color in the current background in which the proportion of the screen area is greater than a third preset threshold.

The above device may perform the method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of performing the above method. For technical details not fully described in this embodiment, reference may be made to the method provided by any embodiment of the present invention.

Note that the above are only the preferred embodiments of the present invention and the technical principles applied thereto. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various modifications, changes and substitutions may be made without departing from the scope of the invention. Therefore, the present invention has been described in detail by the above embodiments, but the present invention is not limited to the above embodiments, and other equivalent embodiments may be included without departing from the inventive concept. The scope is determined by the scope of the appended claims.

Claims

A writing track color setting method, comprising:

Obtaining feature information and a current background color of an input device for detecting a written trajectory;

Allocating different candidate colors to different feature information from the color distribution model based on the current background color;

And displaying a writing trajectory generated by the input device corresponding to the feature information according to the candidate color.
The method according to claim 1, wherein said color distribution model is a hue circle;

The assigning different candidate colors to the different feature information from the color distribution model based on the current background color includes:

Obtaining an angle of a current background color in the hue circle;

Assigning different angles to the different feature information from the reference angle according to the first preset angle interval;

If the angle differs from the angle of the current background color in the hue circle by less than the second predetermined angular interval or the angle is an already assigned angle, the angle is filtered and re-described according to the reference angle Feature information allocation angle;

Assigning a candidate color corresponding to an angle assigned to the different feature information in the hue circle to the different feature information.
The method according to claim 2, wherein after the assigning different angles to the different feature information from the reference angle according to the first preset angular interval, the method further comprises:

If the corresponding angles in the hue circle have all been allocated from the reference angle according to the first preset angle interval, different angles are assigned to the different feature information from the next reference angle.
The method according to claim 1, wherein the color distribution model is a candidate color list, and RGB values of any two candidate colors in the candidate color list differ by more than a first preset threshold. value;

The assigning different candidate colors to the different feature information from the color distribution model based on the current background color includes:

Selecting a to-be-selected color and an allocated candidate color that are different from the RGB value of the current background color by less than the first preset threshold from the candidate color list to obtain a first candidate color list;

Different candidate colors are assigned to different feature information from the first candidate color list.
The method according to claim 1, wherein the current background color is a color in the current background in which the proportion of the screen area is greater than a third preset threshold.
A writing track color setting device, comprising:

An information acquiring module, configured to acquire feature information of an input device for detecting a writing track and a current background color;

a color distribution module, configured to allocate different candidate colors to the different feature information from the color distribution model based on the current background color;

And a trajectory display module, configured to display, according to the candidate color, a writing trajectory generated by the input device corresponding to the feature information.
The apparatus according to claim 6, wherein said color distribution model is a hue circle;

The color distribution module includes:

An angle obtaining unit, configured to acquire an angle of a current background color in the hue circle;

An angle allocating unit, configured to assign different angles to different pieces of the feature information from the reference angle according to the first preset angle interval;

An angle filtering unit, configured to filter the angle if the angle is different from the angle of the current background color in the hue circle by less than a second predetermined angular interval or the angle is an already allocated angle Reassigning the feature information to the feature information according to the reference angle;

And a color distribution unit, configured to allocate, to the different feature information, the to-be-selected color corresponding to the angle allocated in the hue circle for the different feature information.
The device according to claim 7, wherein the angle distribution unit is further configured to:

If the corresponding angles in the hue circle have all been allocated from the reference angle according to the first preset angle interval, different angles are assigned to the different feature information from the next reference angle.
The apparatus according to claim 6, wherein the color distribution model is a candidate color list, and RGB values of any two of the candidate colors in the candidate color list differ by more than a first preset threshold;

The color distribution module includes:

a color filtering unit, configured to filter the to-be-selected color and the selected candidate color that are different from the RGB value of the current background color by the first preset threshold from the candidate color list, to obtain a first candidate color list;

a color distribution unit, configured to allocate different candidate colors to different feature information from the first candidate color list.
The device according to claim 6, wherein the current background color is a color in the current background in which the proportion of the screen area is greater than a third preset threshold.