CN111611192A - Refreshing method of color screen reader, color screen reader and computer storage medium - Google Patents
Refreshing method of color screen reader, color screen reader and computer storage medium Download PDFInfo
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
- G06F15/025—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators adapted to a specific application
- G06F15/0291—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators adapted to a specific application for reading, e.g. e-books
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Abstract
The invention discloses a refreshing method of a color screen reader, the color screen reader and a computer storage medium. The color screen reader realizes color image output through a color filter film, and the method comprises the following steps: reading an original color image to be displayed; converting the original color image into a gray image which is suitable for being output by a color screen reader; converting the gray level image into a low-order gray level image; looking up a table to obtain a driving waveform of the low-order gray level image; the ink screen is driven to display the low-order gray level image according to the driving waveform, and the color display effect is achieved through the color filter film, so that the refreshing effect of the color screen reader is improved, the problem that the image quality is seriously affected by the residual shadow is effectively controlled, the flicker frequency is effectively controlled, the refreshing speed is integrally improved, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of image display, in particular to a refreshing method of a color screen reader, the color screen reader and a computer storage medium.
Background
With the continuous development of science and technology and society, a color screen reader is developed, which is based on the principle that a layer of color filter film is added on a black-and-white ink screen through a printed circuit technology, light irradiates an ink capsule from the outside of the screen and then is reflected out of the screen, and when the light is reflected, a color effect is realized through the color filter film.
The color screen reader can display image and text contents with color components, for example, image contents such as cartoons, web pages, videos and the like can be browsed through the color screen reader, but the problem of image sticking generated by the color screen reader is more serious compared with a black-and-white display reader, the image contents are more complex compared with the contents of characters (such as reading pages), and the randomness in arrangement is stronger, so that the image sticking degree is further deepened. Therefore, a solution for effectively solving the problem of image sticking caused by the refreshing of the color screen reader is needed.
Disclosure of Invention
In view of the above, the present invention has been made to provide a color screen reader refresh method, a color screen reader and a computer storage medium that overcome or at least partially solve the above-mentioned problems.
According to one aspect of the invention, a refreshing method of a color screen reader is provided, wherein the color screen reader realizes color image output through a color filter film; the method comprises the following steps:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by a color screen reader;
converting the gray level image into a low-order gray level image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving the ink screen to display the low-order gray-scale image according to the driving waveform, and realizing the color display effect through the color filter film.
According to another aspect of the present invention, there is provided a color screen reader comprising: the ink screen, the color filter film, the processor, the memory, the communication interface and the communication bus are communicated with each other through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction causes the processor to execute the following operations:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by a color screen reader;
converting the gray level image into a low-order gray level image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving the ink screen to display the low-order gray-scale image according to the driving waveform, and realizing the color display effect through the color filter film.
According to yet another aspect of the present invention, there is provided a computer storage medium having at least one executable instruction stored therein, the executable instruction causing a processor to:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by a color screen reader;
converting the gray level image into a low-order gray level image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving the ink screen to display the low-order gray-scale image according to the driving waveform, and realizing the color display effect through the color filter film.
According to the scheme provided by the invention, the original color image to be displayed is converted into the gray image adaptive to the output of the color screen reader, the gray image is converted into the low-order gray image, the driving waveform is searched based on the low-order gray image, the ink screen is driven to display the low-order gray image according to the driving waveform, and the color display effect is realized through the color filter film, so that the refreshing effect of the color screen reader is improved, the problem that the image quality is seriously influenced by the ghost is effectively controlled, the flicker frequency is effectively controlled, the refreshing speed is integrally improved, and the user experience is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart diagram illustrating a refresh method of a color screen reader according to one embodiment of the invention;
FIG. 2A is a flow chart illustrating a refresh method of a color screen reader according to another embodiment of the invention;
2B-2C are schematic diagrams of extracting a specified color component;
fig. 3 shows a schematic structural diagram of a color screen reader according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Fig. 1 is a flow chart illustrating a refresh method of a color screen reader according to an embodiment of the present invention. The color screen reader outputs color images through a color filter, as shown in fig. 1, the method includes the following steps:
step S101, an original color image to be displayed is read.
When the content displayed by the color screen reader needs to be changed, the refreshing process of the color screen reader is involved at the moment. However, the problem of image sticking or the problem of a slow refresh rate can easily occur in the refresh method of the existing color screen reader, and in order to improve the refresh effect, effectively eliminate the image sticking problem and ensure the refresh rate, the refresh method of the color screen reader can be used for refreshing according to the embodiment.
Specifically, before the changed content is switched to be displayed, the original color image to be displayed is read, wherein the original color image to be displayed is the original color image corresponding to the changed content to be displayed.
And step S102, converting the original color image into a gray image which is suitable for being output by a color screen reader.
The color expression of the color screen reader is realized through a color filter film, the ink screen per se needs to follow the display mechanism of a black-and-white ink screen, namely, the ink screen per se cannot directly display an original color image, and in order to be adaptive to the display of the ink screen, the original color image needs to be converted into a gray image which is adaptive to the output of the color screen reader.
Step S103, converts the grayscale image into a low-order grayscale image.
After the gray level image output by the color screen reader is obtained according to the step S102, in order to reduce the influence of afterimage and increase the refresh rate, the output gray level image is processed as follows: and converting the gray image into a low-order gray image, wherein the gray level of the low-order gray image is less than that of the gray image output by the color screen reader.
Through the conversion processing, the ratio of the pixels with the colors needing to be changed is reduced, so that the problems of insufficient moving distance and residual shadow generation can be avoided; in addition, after the conversion processing, the data volume of the gray level image is reduced, so that the subsequent processing links, such as links of searching driving waveforms, driving ink screens and the like, are shortened, the occupied time is shortened, and the refreshing display speed is effectively improved.
The conversion from the gray image to the low-order gray image may be realized according to a preset mapping relationship between the gray levels before and after the conversion, and of course, other methods may also be used, which are not specifically limited herein.
And step S104, looking up a table to obtain the driving waveform of the low-order gray-scale image.
And step S105, driving the ink screen to display the low-order gray image according to the driving waveform, and realizing a color display effect through the color filter film.
After the low-order gray image is obtained, a driving waveform can be searched according to the low-order gray image, for example, a driving waveform (waveform) corresponding to the gray value of the pixel point is searched in a preset table according to the gray value of each pixel in the low-order gray image, wherein the driving waveform includes information such as voltage, pulse frequency, pulse duration and the like, after the driving waveform is searched, the driving waveform is used for driving an ink screen to display the low-order gray image, for example, the driving waveform is used for driving an ink capsule corresponding to the pixel position on the ink screen, so that black and white particles in the ink screen do different distance motions, corresponding gray colors are formed, and the low-order gray image is displayed. In practical application, the color filter film covers the ink screen, and after the driving waveform is utilized to drive the ink screen to display the low-order gray-scale image, the color display effect can be realized through the color filter film.
According to the scheme provided by the invention, the original color image to be displayed is converted into the gray image adaptive to the output of the color screen reader, the gray image is converted into the low-order gray image, the driving waveform is searched based on the low-order gray image, the ink screen is driven to display the low-order gray image according to the driving waveform, and the color display effect is realized through the color filter film, so that the refreshing effect of the color screen reader is improved, the problem that the image quality is seriously influenced by the ghost is effectively controlled, the flicker frequency is effectively controlled, the refreshing speed is integrally improved, and the user experience is improved.
Fig. 2A is a flow chart illustrating a refresh method of a color screen reader according to another embodiment of the invention. The color screen reader outputs a color image through a color filter, as shown in fig. 2A, the method includes the following steps:
step S201, an original color image to be displayed is read.
Specifically, when a user needs to read the next page of content, the page turning operation is triggered, and the color screen reader can sense the page turning operation of the user, so that before the next page of content is switched and displayed, a color image corresponding to the next page of content can be read according to the page turning operation of the user sensed by the color screen reader.
Step S202, deleting the transparency component values of the pixel points in the original color image.
In general, each pixel in the original color image has R, G, B three color components and a transparency component a, and the color screen reader in this embodiment supports the RGB color system but cannot visually express the transparency, so the transparency component value of the pixel in the original color image needs to be deleted.
Specifically, each color component and transparency component in the original color image occupy 8 bits corresponding to the data structure, and therefore, the transparency component value of the pixel point in the original color image can be deleted by deleting the 8-bit data corresponding to the transparency component a in the data structure.
It should be noted that not all original color images contain the transparency component a, so step S202 is an optional step, and for an original color image that does not contain the transparency component a, the step of deleting the transparency component values of the pixels in the original color image is not required.
The color expression of the color screen reader is realized through a color filter film, the ink screen per se needs to follow the display mechanism of a black-and-white ink screen, namely the ink screen per se cannot directly display a color image, in order to be suitable for the display of the ink screen, after the transparency component values of pixel points in the original color image are deleted, the original color image needs to be converted into a 16-order gray-scale image, however, each pixel in the color image without the transparency components has R, G, B three color components, and therefore, the assigned color component value of each pixel point needs to be extracted firstly; and converting the assigned color component values of the pixel points into corresponding gray scale values to obtain a 16-level gray scale image.
Specifically, it can be realized by steps S203 to S206:
step S203, reading color arrangement information, where the color arrangement information is used to reflect coating distribution positions of different colors on the color filter film.
After the transparency component values of the pixel points in the original color image are deleted, each pixel in the original color image has R, G, B three color components, and the color filter film is a film printed with different colors such as red, green and blue, wherein only one color can be printed on the color filter film corresponding to each pixel position. Therefore, when the designated color component value of each pixel point is extracted, the extraction is performed according to the color printed on the color filter film.
Specifically, the color arrangement information is read, wherein the process of reading the color arrangement information actually obtains the coating distribution positions of different colors on the color filter film.
And step S204, determining the color component which needs to be extracted by each pixel point in the original color image according to the color arrangement information.
After the color arrangement information is read, the color component that each pixel point in the original color image needs to be extracted can be determined according to the color arrangement information, specifically, each pixel point in the original color image can be sequentially traversed, for example, the following manner is followed: traversing line by line or line by line from the pixel point corresponding to the first line and the first line of the original color image until the last pixel point of the last line or the last line of the original color image is traversed, wherein the pixel point at which the traversing starts can also be flexibly set, and the method is not particularly limited.
And for the traversed pixel points, determining the color of the corresponding pixel position on the color filter film based on the positions of the traversed pixel points in the original color image, then determining the color of the corresponding pixel position on the color filter film as the color component to be extracted of each pixel point in the original color image, repeatedly executing the processing process, and finally determining the color classification to be extracted of all the pixel points.
Referring to the drawings, the left image in fig. 2B is an original color image of RGB888, where the numbers 1, 2, and 3 … in the figure represent a pixel point, each pixel point having three color components of RGB. The right image in fig. 2B is a diagram of printing colors of the color filter, red, green, blue and other different colors are printed on the color filter, it should be noted that only one color is printed at a position corresponding to the pixel on the color filter, and in order to express three color components on the color filter, a method of reducing resolution is adopted here, that is, three pixels on the color filter are a pixel unit, wherein three colors of RGB are printed in sequence, respectively, and when displaying, the color filter is superimposed on an ink screen, and expresses three primary colors by using one pixel unit as a basic unit, as shown in fig. 2C.
When the color component to be extracted is determined, the color component is determined according to the printing color of the pixel position corresponding to the color filter, for example, for the first pixel of the color image, the red component to be extracted is determined; for the second pixel of the color image, determining that the green component needs to be extracted; for the third pixel of the color image, it is determined that the blue component needs to be extracted.
It should be noted that the RGB sorting printing method of the color filter is only an example, and in practical applications, in order to make the expression of colors more natural, other RGB arrangement methods, such as rrgrbgbrgbgg, may be further provided, and those skilled in the art may flexibly set the RGB arrangement method according to actual needs.
Since three pixels on the ink screen are mapped to one pixel (unit) on the color filter, the DPI of the color filter is reduced to one third, usually the DPI of the ink screen is 300, and the DPI becomes 100 after the color filter is added, which is called resolution reduction.
In step S205, the color value data of the color component to be extracted is retained and the color value data of the remaining color components is deleted.
After the color component needing to be extracted of each pixel point in the original color image is determined, the purpose of extracting the assigned color component value of each pixel point can be achieved by reserving the color value data of the color component needing to be extracted and deleting the color value data of other useless color components. For example, for the first pixel in a color image, the purpose is to extract the red color component, then only the color value data corresponding to the red color component may be retained by deleting the color value data corresponding to the green color component and the blue color component in the data structure of the pixel.
Step S206, the assigned color component values of the pixel points are converted into corresponding gray scale values, and 16-level gray scale images are obtained.
The color expression of the color screen reader is realized through a color filter film, the ink screen per se needs to follow the display mechanism of a black-and-white ink screen, namely the ink screen per se cannot directly display a color image, the current ink screen supports 16-level gray scale display at most, and in order to be adaptive to the display of the ink screen, after the appointed color component values of the pixel points are obtained, the appointed color component values of the pixel points need to be converted into corresponding gray scale values, and a 16-level gray scale image is obtained.
Specifically, the gradation conversion may be performed by the following method: and mapping the color component values to corresponding gray scales in 16 gray scales through threshold value comparison, and acquiring gray scale values of the gray scales.
During conversion, traversing each pixel point, comparing the assigned color component value of the pixel point with a preset threshold value, and mapping the color component value to a certain gray scale in 16 gray scales according to the comparison result, wherein the 16 gray scale value range is 0 to 15, 0 represents pure white, 15 represents pure black, and the middle value represents gray with different depths. After the conversion is completed, 4-bit data is used for recording gray scale data.
Optionally, the color value data of the color component to be extracted, which is retained in step S205, is still 8 bits, and there are 256 colors from 0 to 255, and during the gray scale conversion, the color value data of the extracted color component may be converted into a gray scale value represented by 8 bits, where the gray scale value ranges from 0 to 255, for example, the color component extracted by a certain pixel is red, the color component value is 134 (the value range is 0 to 255), the pixel is subjected to gray scale conversion, the gray scale value of the pixel is still 134 after the conversion, and the value range of the gray scale image is also 0 to 255. Then, the converted gray value is compared with a preset threshold value, and according to the comparison result, the color component value is mapped to a certain gray scale in the 16 gray scales. In one implementation, the image can be converted to a 16-gray image through a linear mapping relationship, for example, the mapping relationship between 256 gray levels and 16 gray levels is set as follows: 0 to 16 of the 256 gray levels corresponds to 0 of 16 gray levels, 17 to 32 corresponds to 1, 33 to 48 corresponds to 2 …, and so on. Or the conversion can be performed by a nonlinear mapping relationship, and each gray scale in the 16 gray scale image is preset to correspond to a gray scale range in 256 gray scales.
Step S207, the 16-step grayscale image is converted into a low-order grayscale image.
After obtaining a 16-step gray image, in order to reduce the influence of afterimages and improve the refresh rate, the following processing is performed on the output gray image: and converting the 16-step gray image into a low-order gray image, wherein the gray level of the low-order gray image is less than that of the gray image output by the adaptive color screen reader. For example, the low-order grayscale image is a 2-level grayscale image, a 4-level grayscale image, or an 8-level grayscale image.
Through the conversion processing, the ratio of the pixels with the colors needing to be changed is reduced, so that the problems of insufficient moving distance and residual shadow generation can be avoided; in addition, after the conversion processing, the data volume of the gray level image is reduced, so that the subsequent processing links, such as links of searching driving waveforms, driving ink screens and the like, are shortened, the occupied time is shortened, and the refreshing display speed is effectively improved.
The gray scale level of the gray scale image before conversion is determined to be 16, and the gray scale level of the gray scale image after conversion is also known, for example, 4 or 8, so that the conversion processing of the gray scale image can be realized according to a corresponding preset mapping relationship, and of course, other methods can also be adopted, which are not specifically limited herein.
In an alternative embodiment of the present invention, if the low-order grayscale image is a 2-level grayscale image, the 2-level grayscale image can be obtained from the 16-level grayscale image by the following method: and carrying out binarization processing on the 16 gray level image to obtain a binarized image, wherein the binarized image is actually a black-and-white 2-order image.
Specifically, the following three methods can be adopted to perform binarization processing on the grayscale image to obtain a binarized image: performing binarization processing by using a specified threshold algorithm; or, using a rule dithering algorithm to carry out binarization processing; alternatively, binarization processing is performed using an error diffusion algorithm.
The appointed threshold algorithm compares the gray value of the pixel with a preset threshold through a preset threshold, and converts the gray value of the pixel into 0 or 1 according to the comparison result to obtain a binary image;
the regular dithering algorithm is to compare and convert the gray scale by taking the standard pattern as a threshold value, and the threshold value in the standard pattern is generated by randomization processing, so that the reduction of the gray scale is realized;
the error diffusion algorithm performs error compensation on the gray value of the pixel, and performs binarization conversion by using the gray value after the error compensation.
After the binarization processing, the analog expression of the original gray effect by using black and white colors is used, although the binarization image only has the black and white colors, the gray effect can be visually realized through the position distribution of the black and white colors, that is, the image after the binarization processing still has different gray scales from the perspective of a user, so that various color effects can be still realized by combining a color filter film. In addition, through binarization processing, only two colors, namely black and white, are included in the binarized image, and the colors are clearly distinguished, and after the images penetrate through the color filter film, the two results are generally as follows: the chroma of the color is fully expressed or the color is not displayed, so that the discrimination of the chroma of the same color between adjacent pixels is improved, the color saturation is improved, and the color is sharper in visual effect.
In step S208, a table is looked up to obtain a driving waveform of the low-order grayscale image.
Step S209, driving the ink panel to display the low-order grayscale image according to the driving waveform, and implementing a color display effect through the color filter.
After the low-order gray image is obtained, the low-order gray image is sent to a conversion chip (TCON), the TCON searches a driving waveform (waveform) of black and white particles corresponding to the pixel point in a preset table according to the gray value of each pixel in the low-order gray image, and the driving waveform of each gray level at each temperature is recorded in the preset table due to the difference of the display characteristics of the ink screen at different temperatures, so that the temperature information of the ink screen can be referred to in the table searching process, and the temperature information of the ink screen is provided by a temperature sensor in a color screen reader. After the driving waveform is found, the driving waveform is used to drive the ink screen to display the low-order gray image, for example, the driving waveform is used to drive the ink capsules corresponding to the pixel positions on the ink screen, so that the black and white particles in the ink screen move at different distances to form corresponding gray colors and display the low-order gray image. In practical application, the color filter film covers the ink screen, and after the driving waveform is utilized to drive the ink screen to display the low-order gray-scale image, the color display effect can be realized through the color filter film.
In an alternative embodiment of the present invention, the low-order grayscale image may be displayed specifically by the following refresh method:
the method comprises the following steps: displaying the low-order gray-scale image by using a screen clearing refreshing mode, wherein the screen clearing refreshing mode comprises a GC16 mode, a GCC16 refreshing mode and a custom screen clearing refreshing mode; wherein, the self-defined refreshing mode of clearing screen includes: a DU refresh and a non-flush refresh are performed sequentially, or a DC refresh and a non-flush refresh are performed sequentially.
Specifically, the screen refreshing mode is that before driving the black-and-white particles to the display position of the low-order gray image, the ink screen is subjected to a full white brushing or full black brushing operation (so that the black-and-white particles return to the initial extreme position) for one time, no matter whether the front gray level and the rear gray level of the same pixel are changed or not, and then the ink screen is driven from the initial position to the position corresponding to the gray level to display the low-order gray image, and through the processing, the screen ghost can be completely eliminated.
The screen clearing refresh mode comprises a GC16 refresh mode, a GCC16 refresh mode and a custom screen clearing refresh mode; wherein, the self-defined refreshing mode of clearing screen includes: sequentially carrying out DU refreshing and non-screen refreshing or sequentially carrying out DC refreshing and non-screen refreshing, wherein DU refreshing or DC refreshing is to present the original displayed gray-scale content in black and white. The GC16 refresh mode and the GCC16 refresh mode are also called global refresh mode, and the GCC16 refresh mode has better effect of removing the residual shadow than the GC16 refresh mode.
The second method comprises the following steps: and displaying the low-order gray-scale image by using a non-screen refreshing mode, wherein the non-screen refreshing mode comprises a GU16 refreshing mode and a GL16 refreshing mode.
Specifically, the original color image to be displayed is finally converted into the low-order gray-scale image by using the method steps in step S201 to step S207, so that the color change is effectively reduced, and the situation that the front and rear gray scales of the same pixel are not changed may also occur, so that the low-order gray-scale image may be displayed by using the non-clear screen refresh mode, and the low-order gray-scale image may be displayed by directly outputting the pixel with the gray scale changed from the last output gray scale.
The non-screen refreshing mode comprises a GU16 refreshing mode and a GL16 refreshing mode, wherein the GU16 refreshing mode and the GL16 refreshing mode are also called partial refreshing modes, screen refreshing operation is not carried out before data output, pixels which are changed with last output are directly output, and compared with the screen refreshing mode, the refreshing speed of the GU16 refreshing mode and the refreshing speed of the GL16 refreshing mode are higher.
The color screen reader in any embodiment described above may adopt an android system architecture, and certainly, other architectures may also be adopted along with the development of technology, which is not specifically limited here.
According to the scheme provided by the invention, the original color image to be displayed is converted into the gray image adaptive to the output of the color screen reader, and the gray image is converted into the low-order gray image, for example, the gray image is converted into the 4-order gray image or the 8-order gray image or the 2-order gray image, the occupation ratio of the pixels of which the colors need to be changed is reduced through the conversion, so that the problems of insufficient moving distance and residual shadow generation can be avoided, in addition, the data volume of the gray image is reduced through the conversion into the low-order gray image, so that the subsequent processing links, such as links of searching driving waveforms, driving ink screens and the like, are shortened, the occupied time is shortened, the display refreshing speed is effectively improved, and the user experience is.
The embodiment of the invention also provides a nonvolatile computer storage medium, wherein the computer storage medium stores at least one executable instruction, and the computer executable instruction can execute the refreshing method of the color screen reader in any method embodiment.
The executable instructions may be specifically configured to cause the processor to:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by a color screen reader;
converting the gray level image into a low-order gray level image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving the ink screen to display the low-order gray-scale image according to the driving waveform, and realizing the color display effect through the color filter film.
In an alternative embodiment, the executable instructions further cause the processor to:
the original color image is converted into a 16-step grayscale image.
In an alternative embodiment, the executable instructions further cause the processor to:
extracting the assigned color component value of each pixel point;
and converting the assigned color component values of the pixel points into corresponding gray scale values to obtain a 16-level gray scale image.
In an alternative embodiment, the executable instructions further cause the processor to:
and extracting corresponding color component values of the pixel points according to the colors of the positions of the corresponding pixel points on the color filter film.
In an alternative embodiment, the executable instructions further cause the processor to:
reading color arrangement information which is used for reflecting coating distribution positions of different colors on the color filter film;
determining the color component to be extracted of each pixel point in the original color image according to the color arrangement information;
color value data of a color component to be extracted is retained and color value data of the remaining color components are deleted.
In an alternative embodiment, the executable instructions further cause the processor to:
and mapping the color component values to corresponding gray scales in 16 gray scales through threshold value comparison, and acquiring gray scale values of the gray scales.
In an alternative embodiment, the low-order grayscale image is a 2-order grayscale image, a 4-order grayscale image, or an 8-order grayscale image.
In an alternative embodiment, the executable instructions further cause the processor to:
and the low-order gray image is a 2-order gray image, and the gray image is subjected to binarization processing to obtain a binarization image.
In an alternative embodiment, the executable instructions further cause the processor to:
performing binarization processing by using a specified threshold algorithm; alternatively, the first and second electrodes may be,
carrying out binarization processing by using a rule dithering algorithm; alternatively, the first and second electrodes may be,
and (5) carrying out binarization processing by using an error diffusion algorithm.
In an alternative embodiment, the executable instructions further cause the processor to:
and before the original color image is converted into a gray image which is adaptive to the output of the color screen reader, deleting the transparency component values of the pixel points in the original color image.
In an alternative embodiment, the executable instructions further cause the processor to:
displaying the low-order gray-scale image by using a screen clearing refreshing mode, wherein the screen clearing refreshing mode comprises a GC16 refreshing mode, a GCC16 refreshing mode and a custom screen clearing refreshing mode;
the user-defined screen refreshing mode comprises the following steps: a DU refresh and a non-flush refresh are performed sequentially, or a DC refresh and a non-flush refresh are performed sequentially.
In an alternative embodiment, the executable instructions further cause the processor to:
and displaying the low-order gray-scale image by using a non-screen refreshing mode, wherein the non-screen refreshing mode comprises a GU16 refreshing mode and a GL16 refreshing mode.
Fig. 3 is a schematic structural diagram of a color screen reader according to an embodiment of the present invention, and the specific embodiment of the present invention does not limit the specific implementation of the color screen reader.
As shown in fig. 3, the color screen reader 300 may include: an ink screen 301, a processor 302, a color filter 303, a communication Interface 304, a memory 306, and a communication bus 308.
Wherein: the ink screen 301, processor 302, color filter 303, communication interface 304, and memory 306 communicate with each other via communication bus 308.
A communication interface 304 for communicating with network elements of other devices, such as clients or other servers.
The processor 302 is configured to execute the program 310, and may specifically execute the relevant steps in the embodiment of the method for refreshing a color screen reader.
In particular, program 310 may include program code comprising computer operating instructions.
The processor 302 may be a central processing unit CPU, or an application specific Integrated circuit (asic), or one or more Integrated circuits configured to implement an embodiment of the present invention. The color screen reader comprises one or more processors which can be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.
And a memory 306 for storing a program 310. Memory 306 may comprise high-speed RAM memory and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The program 310 may specifically be configured to cause the processor 302 to perform the following operations:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by a color screen reader;
converting the gray level image into a low-order gray level image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving the ink screen to display the low-order gray-scale image according to the driving waveform, and realizing the color display effect through the color filter film.
In an alternative embodiment, program 310 further causes processor 302 to:
the original color image is converted into a 16-step grayscale image.
In an alternative embodiment, program 310 further causes processor 302 to:
extracting the assigned color component value of each pixel point;
and converting the assigned color component values of the pixel points into corresponding gray scale values to obtain a 16-level gray scale image.
In an alternative embodiment, program 310 further causes processor 302 to:
and extracting corresponding color component values of the pixel points according to the colors of the positions of the corresponding pixel points on the color filter film.
In an alternative embodiment, program 310 further causes processor 302 to:
reading color arrangement information which is used for reflecting coating distribution positions of different colors on the color filter film;
determining the color component to be extracted of each pixel point in the original color image according to the color arrangement information;
color value data of a color component to be extracted is retained and color value data of the remaining color components are deleted.
In an alternative embodiment, program 310 further causes processor 302 to:
and mapping the color component values to corresponding gray scales in 16 gray scales through threshold value comparison, and acquiring gray scale values of the gray scales.
In an alternative embodiment, the low-order grayscale image is a 2-order grayscale image, a 4-order grayscale image, or an 8-order grayscale image.
In an alternative embodiment, program 310 further causes processor 302 to:
and the low-order gray image is a 2-order gray image, and the gray image is subjected to binarization processing to obtain a binarization image.
In an alternative embodiment, program 310 further causes processor 302 to:
performing binarization processing by using a specified threshold algorithm; alternatively, the first and second electrodes may be,
carrying out binarization processing by using a rule dithering algorithm; alternatively, the first and second electrodes may be,
and (5) carrying out binarization processing by using an error diffusion algorithm.
In an alternative embodiment, program 310 also causes processor 302 to:
and before the original color image is converted into a gray image which is adaptive to the output of the color screen reader, deleting the transparency component values of the pixel points in the original color image.
In an alternative embodiment, program 310 further causes processor 302 to:
displaying the low-order gray-scale image by using a screen clearing refreshing mode, wherein the screen clearing refreshing mode comprises a GC16 refreshing mode, a GCC16 refreshing mode and a custom screen clearing refreshing mode;
the user-defined screen refreshing mode comprises the following steps: a DU refresh and a non-flush refresh are performed sequentially, or a DC refresh and a non-flush refresh are performed sequentially.
In an alternative embodiment, program 310 further causes processor 302 to:
and displaying the low-order gray-scale image by using a non-screen refreshing mode, wherein the non-screen refreshing mode comprises a GU16 refreshing mode and a GL16 refreshing mode.
The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specified otherwise.
The invention discloses: A1. a refreshing method of a color screen reader realizes color image output through a color filter film; the method comprises the following steps:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by the color screen reader;
converting the grayscale image to a low-order grayscale image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving an ink screen to display the low-order gray-scale image according to the driving waveform, and realizing a color display effect through the color filter film.
A2. The method of a1, wherein the converting the original color image into a grayscale image adapted to the output of the colorscreen reader comprises:
and converting the original color image into a 16-step gray image.
A3. The method of a2, wherein the converting the original color image into a 16-step grayscale image comprises:
extracting the assigned color component value of each pixel point;
and converting the assigned color component values of the pixel points into corresponding gray scale values to obtain the 16-level gray scale image.
A4. The method according to a3, wherein the extracting the assigned color component value of each pixel point comprises:
and extracting corresponding color component values of the pixel points according to the colors of the positions, corresponding to the pixel points, on the color filter film.
A5. The method according to a4, wherein the extracting the corresponding color component values of the pixel points according to the color of the color filter at the pixel point position comprises:
reading color arrangement information which is used for reflecting coating distribution positions of different colors on the color filter film;
determining the color component which needs to be extracted from each pixel point in the original color image according to the color arrangement information;
color value data of a color component to be extracted is retained and color value data of the remaining color components are deleted.
A6. The method according to a3, wherein the converting the assigned color component values of the pixel points into corresponding grayscale values to obtain the 16-level grayscale image comprises:
and mapping the color component values to corresponding gray scales in 16 gray scales by threshold value comparison, and acquiring gray scale values of the gray scales.
A7. The method of any of a1-a6, wherein the low-order grayscale image is a 2-level grayscale image, a 4-level grayscale image, or an 8-level grayscale image.
A8. The method of a7, wherein the low-order grayscale image is a 2-order grayscale image, the converting the grayscale image to a low-order grayscale image comprising:
and carrying out binarization processing on the gray level image to obtain a binarized image.
A9. The method according to A8, wherein the binarizing the grayscale image to obtain a binarized image comprises:
performing binarization processing by using a specified threshold algorithm; alternatively, the first and second electrodes may be,
carrying out binarization processing by using a rule dithering algorithm; alternatively, the first and second electrodes may be,
and (5) carrying out binarization processing by using an error diffusion algorithm.
A10. The method of a1, wherein, prior to the converting the original color image to a grayscale image that fits the screen reader output, the method further comprises:
and deleting the transparency component values of the pixel points in the original color image.
A11. The method of a1, wherein the driving an ink screen to display the low-order grayscale image according to the driving waveform comprises:
displaying the low-order gray-scale image by using a screen refreshing mode, wherein the screen refreshing mode comprises a GC16 refreshing mode, a GCC16 refreshing mode and a self-defined screen refreshing mode;
the self-defined screen refreshing mode comprises the following steps: a DU refresh and a non-flush refresh are performed sequentially, or a DC refresh and a non-flush refresh are performed sequentially.
A12. The method of a1, wherein the driving an ink screen to display the low-order grayscale image according to the driving waveform comprises:
displaying the low-order grayscale image using non-screen-clearing refresh modes, wherein the non-screen-clearing refresh modes include a GU16 refresh mode and a GL16 refresh mode.
B13. A color screen reader comprising: the ink screen, the color filter film, the processor, the memory, the communication interface and the communication bus are communicated with each other through the communication bus;
the memory is configured to store at least one executable instruction that causes the processor to:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by the color screen reader;
converting the grayscale image to a low-order grayscale image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving an ink screen to display the low-order gray-scale image according to the driving waveform, and realizing a color display effect through the color filter film.
B14. The colorscreen reader of B13, wherein said executable instructions further cause said processor to:
and converting the original color image into a 16-step gray image.
B15. The colorscreen reader of B14, wherein said executable instructions further cause said processor to:
extracting the assigned color component value of each pixel point;
and converting the assigned color component values of the pixel points into corresponding gray scale values to obtain the 16-level gray scale image.
B16. The colorscreen reader of B15, wherein said executable instructions further cause said processor to:
and extracting corresponding color component values of the pixel points according to the colors of the positions, corresponding to the pixel points, on the color filter film.
B17. The colorscreen reader of B16, wherein said executable instructions further cause said processor to:
reading color arrangement information which is used for reflecting coating distribution positions of different colors on the color filter film;
determining the color component which needs to be extracted from each pixel point in the original color image according to the color arrangement information;
color value data of a color component to be extracted is retained and color value data of the remaining color components are deleted.
B18. The colorscreen reader of B15, wherein said executable instructions further cause said processor to:
and mapping the color component values to corresponding gray scales in 16 gray scales by threshold value comparison, and acquiring gray scale values of the gray scales.
B19. The colorscreen reader of any one of claims B13-B18, wherein said low-order grayscale image is a 2-order grayscale image, a 4-order grayscale image, or an 8-order grayscale image.
B20. The colorscreen reader of B19, wherein said executable instructions further cause said processor to:
and the low-order gray image is a 2-order gray image, and the gray image is subjected to binarization processing to obtain a binarization image.
B21. The colorscreen reader of B20, wherein said executable instructions further cause said processor to:
performing binarization processing by using a specified threshold algorithm; alternatively, the first and second electrodes may be,
carrying out binarization processing by using a rule dithering algorithm; alternatively, the first and second electrodes may be,
and (5) carrying out binarization processing by using an error diffusion algorithm.
B22. The colorscreen reader of B13, wherein the executable instructions further cause the processor to:
and deleting the transparency component values of the pixel points in the original color image before the original color image is converted into the gray image which is adapted to the output of the color screen reader.
B23. The colorscreen reader of B13, wherein said executable instructions further cause said processor to:
displaying the low-order gray-scale image by using a screen refreshing mode, wherein the screen refreshing mode comprises a GC16 refreshing mode, a GCC16 refreshing mode and a self-defined screen refreshing mode;
the self-defined screen refreshing mode comprises the following steps: a DU refresh and a non-flush refresh are performed sequentially, or a DC refresh and a non-flush refresh are performed sequentially.
B24. The colorscreen reader of B13, wherein said executable instructions further cause said processor to:
displaying the low-order grayscale image using non-screen-clearing refresh modes, wherein the non-screen-clearing refresh modes include a GU16 refresh mode and a GL16 refresh mode.
C25. A computer storage medium having at least one executable instruction stored therein, the executable instruction causing a processor to:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by a color screen reader;
converting the grayscale image to a low-order grayscale image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving an ink screen to display the low-order gray-scale image according to the driving waveform, and realizing a color display effect through a color filter film.
C26. The computer storage medium of C25, wherein the executable instructions further cause the processor to:
and converting the original color image into a 16-step gray image.
C27. The computer storage medium of C26, wherein the executable instructions further cause the processor to:
extracting the assigned color component value of each pixel point;
and converting the assigned color component values of the pixel points into corresponding gray scale values to obtain the 16-level gray scale image.
C28. The computer storage medium of C27, wherein the executable instructions further cause the processor to:
and extracting corresponding color component values of the pixel points according to the colors of the positions, corresponding to the pixel points, on the color filter film.
C29. The computer storage medium of C28, wherein the executable instructions further cause the processor to:
reading color arrangement information which is used for reflecting coating distribution positions of different colors on the color filter film;
determining the color component which needs to be extracted from each pixel point in the original color image according to the color arrangement information;
color value data of a color component to be extracted is retained and color value data of the remaining color components are deleted.
C30. The computer storage medium of C27, wherein the executable instructions further cause the processor to:
and mapping the color component values to corresponding gray scales in 16 gray scales by threshold value comparison, and acquiring gray scale values of the gray scales.
C31. The computer storage medium of any of C25-C30, wherein the low-order grayscale image is a 2-order grayscale image, a 4-order grayscale image, or an 8-order grayscale image.
C32. The computer storage medium of C31, wherein the executable instructions further cause the processor to:
and the low-order gray image is a 2-order gray image, and the gray image is subjected to binarization processing to obtain a binarization image.
C33. The computer storage medium of C32, wherein the executable instructions further cause the processor to:
performing binarization processing by using a specified threshold algorithm; alternatively, the first and second electrodes may be,
carrying out binarization processing by using a rule dithering algorithm; alternatively, the first and second electrodes may be,
and (5) carrying out binarization processing by using an error diffusion algorithm.
C34. The computer storage medium of C25, wherein the executable instructions further cause the processor to:
and deleting the transparency component values of the pixel points in the original color image before the original color image is converted into the gray image which is adapted to the output of the color screen reader.
C35. The computer storage medium of C25, wherein the executable instructions further cause the processor to:
displaying the low-order gray-scale image by using a screen refreshing mode, wherein the screen refreshing mode comprises a GC16 refreshing mode, a GCC16 refreshing mode and a self-defined screen refreshing mode;
the self-defined screen refreshing mode comprises the following steps: a DU refresh and a non-flush refresh are performed sequentially, or a DC refresh and a non-flush refresh are performed sequentially.
C36. The computer storage medium of C25, wherein the executable instructions further cause the processor to:
displaying the low-order grayscale image using non-screen-clearing refresh modes, wherein the non-screen-clearing refresh modes include a GU16 refresh mode and a GL16 refresh mode.
Claims (10)
1. A refreshing method of a color screen reader realizes color image output through a color filter film; the method comprises the following steps:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by the color screen reader;
converting the grayscale image to a low-order grayscale image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving an ink screen to display the low-order gray-scale image according to the driving waveform, and realizing a color display effect through the color filter film.
2. The method of claim 1, wherein said converting the original color image into a grayscale image adapted to the output of the color screen reader comprises:
and converting the original color image into a 16-step gray image.
3. The method of claim 2, wherein said converting the original color image to a 16-step grayscale image comprises:
extracting the assigned color component value of each pixel point;
and converting the assigned color component values of the pixel points into corresponding gray scale values to obtain the 16-level gray scale image.
4. The method of claim 3, wherein said extracting assigned color component values for each pixel point comprises:
and extracting corresponding color component values of the pixel points according to the colors of the positions, corresponding to the pixel points, on the color filter film.
5. The method of claim 4, wherein the extracting the corresponding color component values of the pixel points according to the color of the color filter at the pixel point position comprises:
reading color arrangement information which is used for reflecting coating distribution positions of different colors on the color filter film;
determining the color component which needs to be extracted from each pixel point in the original color image according to the color arrangement information;
color value data of a color component to be extracted is retained and color value data of the remaining color components are deleted.
6. The method of claim 3, wherein said converting the assigned color component values of the pixel points to corresponding grayscale values to obtain the 16-level grayscale image comprises:
and mapping the color component values to corresponding gray scales in 16 gray scales by threshold value comparison, and acquiring gray scale values of the gray scales.
7. The method of any of claims 1-6, wherein the low-order grayscale image is a 2-level grayscale image, a 4-level grayscale image, or an 8-level grayscale image.
8. The method of claim 7, wherein the low-order grayscale image is a 2-order grayscale image, and the converting the grayscale image to the low-order grayscale image comprises:
and carrying out binarization processing on the gray level image to obtain a binarized image.
9. A color screen reader comprising: the ink screen, the color filter film, the processor, the memory, the communication interface and the communication bus are communicated with each other through the communication bus;
the memory is configured to store at least one executable instruction that causes the processor to:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by the color screen reader;
converting the grayscale image to a low-order grayscale image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving an ink screen to display the low-order gray-scale image according to the driving waveform, and realizing a color display effect through the color filter film.
10. A computer storage medium having at least one executable instruction stored therein, the executable instruction causing a processor to:
reading an original color image to be displayed;
converting the original color image into a gray image which is suitable for being output by a color screen reader;
converting the grayscale image to a low-order grayscale image;
looking up a table to obtain a driving waveform of the low-order gray level image;
and driving an ink screen to display the low-order gray-scale image according to the driving waveform, and realizing a color display effect through a color filter film.
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| CN117437891B (en) * | 2023-11-20 | 2024-04-26 | 广州文石信息科技有限公司 | Clear display method and device of ink screen, electronic equipment and storage medium |
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