CN113838428A - Ink screen refreshing method and terminal equipment - Google Patents
Ink screen refreshing method and terminal equipment Download PDFInfo
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- CN113838428A CN113838428A CN202111098791.2A CN202111098791A CN113838428A CN 113838428 A CN113838428 A CN 113838428A CN 202111098791 A CN202111098791 A CN 202111098791A CN 113838428 A CN113838428 A CN 113838428A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
Abstract
The application discloses a refreshing method of an ink screen and terminal equipment. The method is used for solving the problem that the ink screen has residual shadows during refreshing. In the embodiment of the application, gray values of pixel points at the same position in a current frame image and a next frame image are compared, and a first type of pixel points and a second type of pixel points are determined from the current frame image based on a comparison result; within a preset time, aiming at the first-class pixel points, refreshing the gray value of the first-class pixel points from the current gray value to the gray value of the pixel point at the same position of the next frame; and refreshing the gray value of the second type pixel point to an extreme value opposite to the current gray value and then refreshing to the current gray value aiming at the second type pixel point. In the application, by adopting different refreshing modes for different types of pixel points, the residual shadow generated by the ink screen during refreshing is eliminated.
Description
Technical Field
The application relates to the technical field of display, in particular to a refreshing method of an ink screen and a terminal device.
Background
When the ink screen is refreshed by adopting the correlation technique, two adjacent pixel points have mutual influence, and a pixel point can influence the unchangeable pixel point beside the side from black to white or from white to black, so that the color of the unchangeable pixel point is changed, and the ghost is easily generated in the outline of an image or a character.
Disclosure of Invention
The application aims to provide a refreshing method of an ink screen and terminal equipment, which are used for reducing ghost shadows generated during refreshing of the ink screen.
In a first aspect, an embodiment of the present application provides a method for refreshing an ink screen, which is applied to a device having the ink screen, and the method includes:
comparing the gray values of the pixel points at the same position in the current frame image and the next frame image;
determining a first type of pixel points and a second type of pixel points from the current frame image based on the comparison result, wherein the first type of pixel points are pixel points with different gray values from pixel points at the same position in the next frame image; the second type pixel points are pixel points which have the same gray value as the pixel points at the same position in the next frame of image and have different gray values from the surrounding pixel points and the pixel points at the same position in the next frame of image;
within a preset time, aiming at the first-class pixel points, refreshing the gray value of the first-class pixel points from the current gray value to the gray value of the pixel point at the same position of the next frame; and the number of the first and second groups,
and refreshing the gray value of the second type pixel point to an extreme value opposite to the current gray value and then refreshing to the current gray value aiming at the second type pixel point within the preset time length.
In the embodiment of the application, the pixel points needing to be refreshed can be determined by marking different pixel points differently, when the ink screen is refreshed locally, two adjacent pixel points can be influenced mutually, and one pixel point influences the adjacent pixel point from black to white or from white to black to cause the color of the adjacent pixel point to change.
In some possible embodiments, the determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison result includes:
aiming at any pixel point in the current frame image, determining the gray value of the any pixel point and the gray value of a pixel point at the same position in the next frame image;
if the gray value of any pixel point is different from the gray value of the pixel point at the same position in the next frame of image, the any pixel point is a first-class pixel point;
and if the gray value of any pixel point is the same as that of the pixel point at the same position in the next frame of image, and the gray value of the pixel point adjacent to the any pixel point in the appointed direction is different from that of the pixel point at the same position in the next frame of image by taking the any pixel point as the center, determining that the any pixel point is a second-type pixel point.
In the embodiment of the application, the pixel points are classified by comparing the gray values of the pixel points in the two frames of images before and after, so that the accuracy of classifying the pixel points is improved.
In some possible embodiments, the determining, from the current frame image based on the comparison result, a first type of pixel points and a second type of pixel points further includes:
the appointed direction is a direction, if the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, and the gray value of a pixel point adjacent to the any pixel point in the appointed direction is different from the gray value of a pixel point at the same position in the next frame of image by taking the any pixel point as a center, the any pixel point is a second-class pixel point.
In some possible embodiments, the determining, from the current frame image based on the comparison result, a first type of pixel points and a second type of pixel points further includes:
the appointed direction is a plurality of directions, if the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, and the gray value of a pixel point adjacent to the any pixel point in part or all of the appointed direction is different from the gray value of a pixel point at the same position in the next frame of image by taking the any pixel point as a center, the any pixel point is a second-type pixel point.
In some possible embodiments, the specified direction comprises any one of:
upper, lower, left and right.
In some possible embodiments, if the ink screen is an n-gray-scale ink screen, the range of the gray scale value of the ink screen is 0-n, where the minimum value is 0 and the maximum value is n, and the gray scale value of the first-class pixel is refreshed from the current gray scale value to the gray scale value of the pixel at the same position of the next frame for the first-class pixel within the preset time period; the method comprises the following steps:
if the gray value of the current frame of the first-class pixel point is a and the gray value of the next frame is b, refreshing the gray value of the first-class pixel point from a to b; wherein a is more than or equal to 0 and less than or equal to n, and b is more than or equal to 0 and less than or equal to n.
In some possible embodiments, if the ink screen is an n-gray-scale ink screen, the range of the gray scale value of the ink screen is 0 to n, where the minimum value is 0 and the maximum value is n, and the refreshing, within the preset time length, the gray scale value of the second-class pixel to the extreme value opposite to the current gray scale value and then to the current gray scale value includes:
if the gray value of the second type pixel point is a and a is less than n/2, refreshing the gray value of the second type pixel point from a to n and then to b;
and if the gray value of the second type pixel point is a and a is more than or equal to n/2, refreshing the gray value of the second type pixel point from a to 0 and then to a.
In the embodiment of the application, the gray scale of the ink screen is not limited, and the method can be adopted for ink screens with different gray scales to reduce the residual shadow generated during the refreshing of the ink screen.
The application also provides a terminal device, which comprises an ink screen and at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to:
comparing the gray values of the pixel points at the same position in the current frame image and the next frame image;
determining a first type of pixel points and a second type of pixel points from the current frame image based on the comparison result, wherein the first type of pixel points are pixel points with different gray values from pixel points at the same position in the next frame image; the second type pixel points are pixel points which have the same gray value as the pixel points at the same position in the next frame of image and have different gray values from the surrounding pixel points and the pixel points at the same position in the next frame of image;
within a preset time, aiming at the first-class pixel points, refreshing the gray value of the first-class pixel points from the current gray value to the gray value of the pixel point at the same position of the next frame; and the number of the first and second groups,
and refreshing the gray value of the second type pixel point to an extreme value opposite to the current gray value and then refreshing to the current gray value aiming at the second type pixel point within the preset time length.
In some possible embodiments, the processor, when determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison result, is configured to:
aiming at any pixel point in the current frame image, determining the gray value of the any pixel point and the gray value of a pixel point at the same position in the next frame image;
if the gray value of any pixel point is different from the gray value of the pixel point at the same position in the next frame of image, the any pixel point is a first-class pixel point;
and if the gray value of any pixel point is the same as that of the pixel point at the same position in the next frame of image, and the gray value of the pixel point adjacent to the any pixel point in the appointed direction is different from that of the pixel point at the same position in the next frame of image by taking the any pixel point as the center, determining that the any pixel point is a second-type pixel point.
In some possible embodiments, the processor performs determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison result, and is further configured to:
the appointed direction is a direction, if the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, and the gray value of a pixel point adjacent to the any pixel point in the appointed direction is different from the gray value of a pixel point at the same position in the next frame of image by taking the any pixel point as a center, the any pixel point is a second-class pixel point.
In some possible embodiments, the processor performs determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison result, and is further configured to:
the appointed direction is a plurality of directions, if the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, and the gray value of a pixel point adjacent to the any pixel point in part or all of the appointed direction is different from the gray value of a pixel point at the same position in the next frame of image by taking the any pixel point as a center, the any pixel point is a second-type pixel point.
In some possible embodiments, the specified direction comprises any one of:
upper, lower, left and right.
In some possible embodiments, if the ink screen is an n-gray-scale ink screen, the range of the gray scale value of the ink screen is 0 to n, where the minimum value is 0 and the maximum value is n, and the processor is configured to, when the processor is executed within a preset time period and for the first-type pixel, when the gray value of the first-type pixel is refreshed from the current gray value to the gray value of the pixel at the same position of the next frame, configure to:
if the gray value of the first-class pixel point in the current frame is a and the gray value of the next frame is b, refreshing the gray value of the first-class pixel point from a to b; wherein a is more than or equal to 0 and less than or equal to n, and b is more than or equal to 0 and less than or equal to n;
in some possible embodiments, if the ink screen is an n-gray-scale ink screen, the gray scale value of the ink screen ranges from 0 to n, where the minimum value is 0 and the maximum value is n, and the processor is configured to, within the preset time length, refresh, for the second-type pixel points, the gray scale value of the second-type pixel points to an extreme value opposite to the current gray scale value, and then refresh to the current gray scale value:
if the gray value of the second type pixel point is a and a is less than n/2, refreshing the gray value of the second type pixel point from a to n and then to a;
and if the gray value of the second type pixel point is a and a is more than or equal to n/2, refreshing the gray value of the second type pixel point from a to 0 and then to a.
In a third aspect, the present application also provides a computer storage medium having a computer program stored thereon for causing a computer to perform any of the methods mentioned in the first aspect of the present application.
In a fourth aspect, the present application also provides a computer program product for causing a computer to perform any of the methods mentioned in the first aspect of the present application when the computer program runs on the computer.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an overall flowchart of a method for refreshing an ink screen according to an embodiment of the present disclosure;
FIG. 2 is a diagram illustrating refresh in a related art according to an embodiment of the present application;
fig. 3 is a flowchart of determining a first type of pixel points and a second type of pixel points in a method for refreshing an ink screen according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram illustrating determination of first-type pixel points and second-type pixel points in a method for refreshing an ink screen according to an embodiment of the present application;
fig. 5 is a schematic diagram illustrating that a second type of pixel points are determined when the designated direction of the method for refreshing an ink screen is one direction according to the embodiment of the present application;
fig. 6 is a schematic diagram illustrating that a second type of pixel points are determined when the designated direction of the method for refreshing an ink screen is multiple directions according to the embodiment of the present application;
FIG. 7 is a schematic diagram illustrating marginalization detection of a refresh method of an ink screen according to an embodiment of the present disclosure;
FIG. 8 is a flowchart illustrating an overall method for refreshing an ink screen according to an embodiment of the present disclosure;
fig. 9 is a schematic diagram of a terminal device of a method for refreshing an ink screen according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood by those of ordinary skill in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
It is noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The inventor researches and discovers that 16 gray scales are generally adopted for achieving a good display effect of an ink screen, refreshing under the 16 gray scales can be divided into two modes of global refreshing (GC 16) and local refreshing (GL 16), a refreshing user can feel that the whole ink screen flashes under the GC16 mode, refreshing can be carried out no matter whether the gray scales of pixel points at the same positions of front and rear frames change or not under the mode, for example, a frame of the front frame is a pure white frame, and the next frame or a pure white frame, and under the GC16 mode, the ink screen is firstly printed to be pure black, namely, black ink drops are pushed to the uppermost limit position, white ink drops are pushed to the uppermost limit position, black ink drops are pushed to the lowermost limit position, a white picture is displayed finally, but the black screen flashes in the middle; in contrast, in the GL16 mode, only the pixels with changes in the picture are refreshed compared with the next picture and the previous picture, and the pixels without changes are not refreshed.
The GC16 mode refreshing has the lightest residual shadow but serious flicker, the GL16 mode refreshing has light flicker but obvious residual shadow, and after a plurality of or dozens of continuous refreshing pictures are refreshed by using the GL16 mode, the residual shadow can be accumulated, namely the edge contour of the picture or character of the previous frame can be remained on the picture of the next frame, and the residual shadow can be more obvious. The reason for this is that when the ink screen adopts local refreshing, two adjacent pixels can affect each other, and a pixel from black to white or from white to black can affect a pixel beside, resulting in a change in color of the pixel beside, thereby causing an afterimage in the image or text outline.
In view of the above, the present application provides a method for refreshing an ink screen and a related apparatus, which are used to solve the above problems. The inventive concept of the present application can be summarized as follows: the pixel points are divided into two types by comparing the gray values of the pixel points at the same position in the current frame image and the next frame image, and different refreshing modes are adopted for the different types of the pixel points. For example: aiming at a first type of pixel points, namely pixel points with different gray values from pixel points at the same position in the next frame of image, a refreshing mode of refreshing the gray values of the pixel points from the current gray value to the gray value of the pixel points at the same position in the next frame is adopted; and for the second type of pixel points, namely the pixel points which have the same gray value as the pixel points at the same position in the next frame of image and have the surrounding pixel points different from the pixel points at the same position in the next frame of image, a refreshing mode of refreshing the gray value of the type of pixel points to an extreme value opposite to the current gray value and then refreshing the gray value to the current gray value is adopted.
In the method, after the extreme value opposite to the current gray value is refreshed aiming at the second-class pixel points, the refreshing mode of refreshing the extreme value to the current gray value is adopted, so that the mutual influence between adjacent pixel points can be reduced, and the problem that the second-class pixel points have residual shadows due to refreshing of surrounding pixel points is further reduced.
When the method for refreshing the ink screen is applied, the terminal equipment with the ink screen can acquire the current image and the next frame of image from the memory and compare the gray values of the pixel points at the same position in the current frame of image and the next frame of image; determining a first type of pixel point and a second type of pixel point from the current frame image based on the comparison result, and refreshing the gray value of the first type of pixel point from the current gray value to the gray value of the pixel point at the same position of the next frame aiming at the first type of pixel point within the preset time; and refreshing the gray value of the second type pixel point to an extreme value opposite to the current gray value within the preset time length aiming at the second type pixel point, then refreshing the gray value to the current gray value, and displaying according to the refreshed pixel point.
It should be understood that the image source of the present application includes not only the memory described above, but also the image source such as local storage, network download, etc.
It should be noted that the storage in the embodiment of the present application may be, for example, a cache system, or a hard disk storage, a memory storage, and the like. In addition, the method for refreshing the ink screen is not only suitable for the application scenes, but also suitable for any device with refreshing requirements.
For the convenience of understanding, the method for refreshing the ink screen provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings:
as shown in fig. 1, an application scenario diagram of a method for refreshing an ink screen according to an embodiment of the present application is shown:
in step 101: comparing the gray values of the pixel points at the same position in the current frame image and the next frame image;
in step 102: determining a first type of pixel points and a second type of pixel points from the current frame image based on the comparison result, wherein the first type of pixel points are pixel points with different gray values from pixel points at the same position in the next frame image; the second type of pixel points are pixel points which have the same gray value as the pixel points at the same position in the next frame of image and have different gray values from the surrounding pixel points and the pixel points at the same position in the next frame of image;
in step 103: within a preset time, aiming at the first-class pixel points, refreshing the gray value of the first-class pixel points from the current gray value to the gray value of the pixel point at the same position of the next frame;
in step 104: within the preset time, aiming at the second type pixel points, refreshing the gray value of the second type pixel points to an extreme value opposite to the current gray value, and then refreshing to the current gray value.
In the related art, when the GL16 mode is used for refreshing, as shown in fig. 2, it is assumed that the middle pure black pixel is the pixel No. 0, and due to the mutual influence of the adjacent pixels, the four pixels No. 1, 2, 3, and 4 around the pure black pixel are affected by the influence of the pixel No. 0 from white to black, and the four pixels No. 1, 2, 3, and 4 become gray, so that the contour ghost is left. Therefore, in the embodiment of the present application, in order to determine the first-type pixel points and the second-type pixel points, the steps shown in fig. 3 may be adopted:
in step 301: aiming at any pixel point in the current frame image, determining the gray value of any pixel point and the gray value of the pixel point at the same position in the next frame image;
in step 302: if the gray value of any pixel point is different from the gray value of the pixel point at the same position in the next frame of image, the any pixel point is a first-class pixel point;
in step 303: and if the gray value of any pixel point is the same as that of the pixel point at the same position in the next frame of image, and the gray value of the pixel point adjacent to any pixel point in the appointed direction is different from that of the pixel point at the same position in the next frame of image by taking any pixel point as the center, determining that any pixel point is a second-type pixel point.
For example: as shown in fig. 4, assuming that there are 9 pixels, in the current frame, pixel 1 to pixel 9 are all black, in the next frame, pixel 1 and pixel 5 are black, and pixels 2, 3, 4, 6, 7, 8, and 9 are white, then pixels 2, 3, 4, 6, 7, 8, and 9 are first-type pixels; the gray scales of the pixel point 1 and the pixel point 5 are not changed, but the gray scales of the pixel points adjacent to the designated direction are changed, so that the pixel point 1 and the pixel point 5 are the second type pixel points.
In the embodiment of the present application, in order to increase the universality of the present application, when determining the second type of pixel points, the number of the designated directions is not limited, wherein the number of the designated directions is divided into the following two cases:
1. specifying a direction as one direction
In this application embodiment, in order to confirm second type pixel, will be influenced and then produce the point uniform mark of ghost and be second type pixel, because the pixel of top, below, left, right side refreshes and all can influence pixel on every side, will appoint the direction to set for top, below, left, right-hand in this application for second type pixel that this application confirmed is more accurate. In the embodiment of the present application, when the designated direction is one direction, any one of the four directions may be used.
And if the gray value of any pixel point is the same as that of the pixel point at the same position in the next frame of image, and the gray value of the pixel point adjacent to any pixel point in a specified direction is different from that of the pixel point at the same position in the next frame of image by taking any pixel point as a center, determining that any pixel point is a second-class pixel point. For example: as shown in fig. 5, if the designated direction is set to be the lower direction, the gray value of the lower pixel of the pixel 3 is changed in the current frame, and the gray value of the pixel 3 is not changed, then the pixel 3 is the second type pixel. However, the gray value of the right pixel of the pixel 5 changes, the gray value of the pixel 5 does not change, the gray value of the upper pixel of the pixel 9 changes, and the gray value of the pixel 9 does not change, so that it can be seen that the second type pixels also have 5 and 9; therefore, in the embodiment of the present application, in order to determine all the second-type pixels, in the present application, the first-type pixels located at the edge may be determined first, and then the pixels above, below, to the left, and to the right of the first-type pixels are determined as the second-type pixels.
Continuing to take fig. 5 as an example, if the designated direction is upward, the pixel point 9 is a second-type pixel point, and then the first-type pixel point 6 located at the edge is determined, and the obtained pixel points 3 and 5 are also second-type pixel points;
if the designated direction is the left direction, determining that the second-class pixel points cannot be obtained according to the condition, and in order to determine the second-class pixel points as much as possible, determining the first-class pixel points 6 located at the edge, and obtaining pixel points 3, 5 and 9 as the second-class pixel points;
if the designated direction is right, the pixel point 5 is a second-type pixel point, then the first-type pixel point 6 located at the edge is determined, and the obtained pixel points 3 and 9 are also second-type pixel points.
2. Specifying directions as multiple directions
In the embodiment of the present application, when the designated direction is a plurality of directions, at least two directions among the four directions may be used. And if the gray value of any pixel point is the same as that of the pixel point at the same position in the next frame of image, and the gray value of the pixel point adjacent to any pixel point in a part or all of the specified directions is different from that of the pixel point at the same position in the next frame of image by taking any pixel point as a center, determining that any pixel point is a second-class pixel point. For example: as shown in fig. 6, the designated direction is set to be upper and lower, the gray values of the pixels above and below the pixel 5 are changed, and the pixel 5 is not changed, so the pixel 5 is a second-class pixel, but it can be seen from the figure that the second-class pixels at this time also include pixels 1, 3, 7, and 9, so in order to determine all the second-class pixels in the present application, the first-class pixel located at the edge can be determined at first, and the pixels above, below, left, and right of the first-class pixel are all determined as the second-class pixels.
Continuing to take fig. 6 as an example, assuming that the designated direction is left and right, according to the condition, it is determined that the second-type pixel point is not present, and in order to determine the second-type pixel point as much as possible, it is necessary to determine the first-type pixel points 2 and 8 located at the edge, and it is obtained that the pixel points 1, 3, 5, 7, and 9 are the second-type pixel points; assuming that the designated direction is upward and rightward, according to the condition, determining that the second-type pixel points cannot be obtained, and in order to determine the second-type pixel points as much as possible, determining the first-type pixel points 2 and 8 located at the edge, and obtaining pixel points 1, 3, 5, 7 and 9 as the second-type pixel points; assuming that the designated direction is the upper direction and the left direction, according to the condition, determining that the second-class pixel points cannot be obtained, and in order to determine the second-class pixel points as much as possible, determining the first-class pixel points 2 and 8 positioned at the edge, and obtaining pixel points 1, 3, 5, 7 and 9 as the second-class pixel points; assuming that the designated direction is the lower direction and the left direction, according to the condition, determining that the second-class pixel points cannot be obtained, in order to determine the second-class pixel points as much as possible, therefore, the first-class pixel points 2 and 8 positioned at the edge need to be determined, and the obtained pixel points 1, 3, 5, 7 and 9 are the second-class pixel points; assuming that the designated direction is downward and rightward, according to the condition, it is determined that the second-type pixels are not present, and in order to determine the second-type pixels as much as possible, it is necessary to determine the first-type pixels 2 and 8 located at the edge, and it is possible to obtain pixels 1, 3, 5, 7, and 9 as the second-type pixels.
Taking fig. 6 as an example, assuming that the designated directions are upper, lower, and left, according to the condition, the second-type pixel point is not determined, and in order to determine the second-type pixel point as much as possible, it is necessary to determine the first-type pixel points 2 and 8 located at the edge, and the pixel points 1, 3, 5, 7, and 9 are obtained as the second-type pixel points; assuming that the designated direction is upper, lower and right, according to the condition, it is determined that the second-type pixel points are not available, and in order to determine the second-type pixel points as much as possible, it is necessary to determine the first-type pixel points 2 and 8 located at the edge, and the obtained pixel points 1, 3, 5, 7 and 9 are the second-type pixel points; assuming that the designated directions are upper, left and right, according to the condition, it is determined that the second-type pixel points cannot be found, and in order to determine the second-type pixel points as much as possible, it is necessary to determine the first-type pixel points 2 and 8 located at the edge, and the obtained pixel points 1, 3, 5, 7 and 9 are the second-type pixel points; assuming that the designated direction is downward, leftward and rightward, according to the condition, it is determined that the second-type pixels are not present, and in order to determine the second-type pixels as much as possible, it is necessary to determine the first-type pixels 2 and 8 located at the edge, and it is possible to obtain pixels 1, 3, 5, 7 and 9 as the second-type pixels.
Taking fig. 6 as an example, assuming that the designated directions are upper, lower, left, and right, according to the condition, the second type of pixel point is not determined, and in order to determine the second type of pixel point as much as possible, it is necessary to determine the first type of pixel points 2 and 8 located at the edge, and the pixel points 1, 3, 5, 7, and 9 are obtained as the second type of pixel points;
for ease of understanding, the refresh process is described below with the ink screen as an n-order ink screen as an example: assuming that the gray value range of the ink screen is 0-n, the minimum value is 0, and the maximum value is n;
if the gray value of the current frame of the first-class pixel point is a and the gray value of the next frame is b, refreshing the gray value of the first-class pixel point from a to b; wherein a is more than or equal to 0 and less than or equal to n, and b is more than or equal to 0 and less than or equal to n;
if the gray value of the second type pixel point is a and a is less than n/2, refreshing the gray value of the second type pixel point from a to n and then to a; namely the refreshing process of the second type pixel point is a-n-a;
if the gray value of the second type pixel point is a and a is larger than or equal to n/2, refreshing the gray value of the second type pixel point from a to 0 and then to a, namely the refreshing flow of the second type pixel point is a-O-a.
In some embodiments, as shown in fig. 7, since the picture is generally a pattern, in the embodiments of the present application, when determining the first-type pixel points and the second-type pixel points, the edge of the circular pattern in fig. 7 may be quickly determined in an edge detection manner, and then it may be determined that the pixel points adjacent to the edge are all the second-type pixel points.
For convenience of understanding, as shown in fig. 8, the following detailed description is made on the overall flowchart provided by the embodiment of the present application:
in step 801: aiming at any pixel point in the current frame image, determining the gray value of any pixel point and the gray value of the pixel point at the same position in the next frame image;
in step 802: determining whether the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, if so, entering a step 803, otherwise, entering a step 804;
in step 803: determining whether the gray value of a pixel point adjacent to any pixel point in the specified direction is the same as the gray value of a pixel point at the same position in the next frame of image or not by taking any pixel point as the center, if so, entering step 805, otherwise, entering step 806;
in step 804: determining any pixel point as a first type pixel point;
in step 805: determining that any pixel point is neither a first-class pixel point nor a second-class pixel point;
in step 806: determining any pixel point as a second type pixel point;
in step 807: refreshing the gray value of the first-class pixel point from the current gray value to the gray value of the pixel point at the same position of the next frame within the preset time length;
in step 808: and refreshing the gray value of the second type pixel point to an extreme value opposite to the current gray value within the preset time length, and then refreshing to the current gray value.
Based on the same inventive concept, as shown in fig. 9, the following describes in detail a terminal device 900 provided in an embodiment of the present application: the terminal equipment comprises an ink screen, at least one processor and a memory connected with the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to:
comparing the gray values of the pixel points at the same position in the current frame image and the next frame image;
determining a first type of pixel points and a second type of pixel points from the current frame image based on the comparison result, wherein the first type of pixel points are pixel points with different gray values from pixel points at the same position in the next frame image; the second type pixel points are pixel points which have the same gray value as the pixel points at the same position in the next frame of image and have different gray values from the surrounding pixel points and the pixel points at the same position in the next frame of image;
within a preset time, aiming at the first-class pixel points, refreshing the gray value of the first-class pixel points from the current gray value to the gray value of the pixel point at the same position of the next frame; and the number of the first and second groups,
and refreshing the gray value of the second type pixel point to an extreme value opposite to the current gray value and then refreshing to the current gray value aiming at the second type pixel point within the preset time length.
In some possible embodiments, the processor, when determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison result, is configured to:
aiming at any pixel point in the current frame image, determining the gray value of the any pixel point and the gray value of a pixel point at the same position in the next frame image;
if the gray value of any pixel point is different from the gray value of the pixel point at the same position in the next frame of image, the any pixel point is a first-class pixel point;
and if the gray value of any pixel point is the same as that of the pixel point at the same position in the next frame of image, and the gray value of the pixel point adjacent to the any pixel point in the appointed direction is different from that of the pixel point at the same position in the next frame of image by taking the any pixel point as the center, determining that the any pixel point is a second-type pixel point.
In some possible embodiments, the processor performs determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison result, and is further configured to:
the appointed direction is a direction, if the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, and the gray value of a pixel point adjacent to the any pixel point in the appointed direction is different from the gray value of a pixel point at the same position in the next frame of image by taking the any pixel point as a center, the any pixel point is a second-class pixel point.
In some possible embodiments, the processor performs determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison result, and is further configured to:
the appointed direction is a plurality of directions, if the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, and the gray value of a pixel point adjacent to the any pixel point in part or all of the appointed direction is different from the gray value of a pixel point at the same position in the next frame of image by taking the any pixel point as a center, the any pixel point is a second-type pixel point.
In some possible embodiments, the specified direction comprises any one of:
upper, lower, left and right.
In some possible embodiments, if the ink screen is an n-gray-scale ink screen, the range of the gray scale value of the ink screen is 0-n, where the minimum value is 0 and the maximum value is n, and the processor performs, within a preset time length, to the first-class pixel points, refreshing the gray scale value of the first-class pixel points from the current gray scale value to the gray scale value of the pixel point at the same position of the next frame; is configured to:
in some possible embodiments, if the ink screen is an n-gray-scale ink screen, the gray scale value of the ink screen ranges from 0 to n, where the minimum value is 0 and the maximum value is n, and the processor is configured to, within a preset time period, refresh, for the second type of pixel points, the gray scale value of the second type of pixel points to an extreme value opposite to the current gray scale value, and then refresh to the current gray scale value:
if the gray value of the second type pixel point is a and a is less than n/2, refreshing the gray value of the second type pixel point from a to n and then to a;
and if the gray value of the second type pixel point is a and a is more than or equal to n/2, refreshing the gray value of the second type pixel point from a to 0 and then to a.
In an exemplary embodiment, aspects of a method for refreshing an ink screen provided by the present application may also be implemented in the form of a program product including program code for causing a computer device to perform the steps of a method for refreshing an ink screen according to various exemplary embodiments of the present application described above in this specification when the program product is run on the computer device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an erasable programmable read only memory (EPROM or flash memory), an optical fiber, a portable compact disc read only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The program product for image scaling of the embodiments of the present application may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user terminal device, partly on the user device, as a stand-alone software package, partly on the user terminal device and partly on the remote terminal device, or entirely on the remote terminal device or server. In the case of remote terminal devices, the remote terminal devices may be connected to the user terminal device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to external terminal devices (for example, through the internet using an internet service provider).
It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functions of two or more units described above may be embodied in one unit, according to embodiments of the application. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.
Further, while the operations of the methods of the present application are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A method for refreshing an ink screen, the method comprising:
comparing the gray values of the pixel points at the same position in the current frame image and the next frame image;
determining a first type of pixel points and a second type of pixel points from the current frame image based on the comparison result, wherein the first type of pixel points are pixel points with different gray values from pixel points at the same position in the next frame image; the second type pixel points are pixel points which have the same gray value as the pixel points at the same position in the next frame of image and have different gray values from the surrounding pixel points and the pixel points at the same position in the next frame of image;
within a preset time, aiming at the first-class pixel points, refreshing the gray value of the first-class pixel points from the current gray value to the gray value of the pixel point at the same position of the next frame; and the number of the first and second groups,
and refreshing the gray value of the second type pixel point to an extreme value opposite to the current gray value and then refreshing to the current gray value aiming at the second type pixel point within the preset time length.
2. The method of claim 1, wherein determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison comprises:
aiming at any pixel point in the current frame image, determining the gray value of the any pixel point and the gray value of a pixel point at the same position in the next frame image;
if the gray value of any pixel point is different from the gray value of the pixel point at the same position in the next frame of image, the any pixel point is a first-class pixel point;
and if the gray value of any pixel point is the same as that of the pixel point at the same position in the next frame of image, and the gray value of the pixel point adjacent to the any pixel point in the appointed direction is different from that of the pixel point at the same position in the next frame of image by taking the any pixel point as the center, determining that the any pixel point is a second-type pixel point.
3. The method of claim 2, wherein determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison further comprises:
the appointed direction is a direction, if the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, and the gray value of a pixel point adjacent to the any pixel point in the appointed direction is different from the gray value of a pixel point at the same position in the next frame of image by taking the any pixel point as a center, the any pixel point is a second-class pixel point.
4. The method of claim 2, wherein determining the first type of pixel points and the second type of pixel points from the current frame image based on the comparison further comprises:
the appointed direction is a plurality of directions, if the gray value of any pixel point is the same as the gray value of a pixel point at the same position in the next frame of image, and the gray value of a pixel point adjacent to the any pixel point in part or all of the appointed direction is different from the gray value of a pixel point at the same position in the next frame of image by taking the any pixel point as a center, the any pixel point is a second-type pixel point.
5. The method of claim 2, wherein the specified direction comprises any one of:
upper, lower, left and right.
6. The method according to claim 1, wherein if the ink screen is an n-gray level ink screen, the gray level value of the ink screen ranges from 0 to n, the minimum value is 0, the maximum value is n, and the gray level value of the first type pixel point is refreshed from the current gray level value to the gray level value of the pixel point at the same position of the next frame for the first type pixel point within the preset time period; the method comprises the following steps:
if the gray value of the first-class pixel point in the current frame is a and the gray value of the next frame is b, refreshing the gray value of the first-class pixel point from a to b; wherein a is more than or equal to 0 and less than or equal to n, and b is more than or equal to 0 and less than or equal to n.
7. The method according to claim 1, wherein if the ink screen is an n-gray-scale ink screen, the gray scale value of the ink screen ranges from 0 to n, where the minimum value is 0 and the maximum value is n, and the updating the gray scale value of the second type pixel to the current gray scale value after the gray scale value of the second type pixel is updated to the extreme value opposite to the current gray scale value within the preset time period for the second type pixel comprises:
if the gray value of the second type pixel point is a and a is less than n/2, refreshing the gray value of the second type pixel point from a to n and then to a;
and if the gray value of the second type pixel point is a and a is more than or equal to n/2, refreshing the gray value of the second type pixel point from a to 0 and then to a.
8. A terminal device, comprising an ink screen, at least one processor, and a memory coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-7.
9. A computer storage medium, characterized in that the computer storage medium stores a computer program for causing a computer to execute the method of any one of claims 1-7.
10. A computer program product, characterized in that, when the computer program is run on a computer, it causes the computer to perform the method according to any of claims 1-7.
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