CN112001976A - Dynamic image processing method - Google Patents
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Abstract
A dynamic image processing method is disclosed, which includes providing a dynamic image, generating a second image having a first pixel number by a first image interlace-progressive conversion, generating a third image having a second pixel number based on a position error correction of the second image, generating a fourth image having a third pixel number by repeated iteration, color-correcting the fourth image such that an NTSC color gamut ratio is larger than a predetermined value, increasing luminance of pixel points based on an edge value to form a fifth image, generating an interpolation frame based on an interpolation vector, generating a sixth image of a predetermined multiple of the number of frames of the fifth image based on the interpolation frame, and dividing a screen for displaying the sixth image into a plurality of areas for providing a backlight, the areas adjusting luminance of the backlight based on gray levels of pixels to be displayed.
Description
Technical Field
The invention relates to the technical field of image processing, in particular to a dynamic image processing method.
Background
When displaying a dynamic image, the liquid crystal display has the disadvantages of blurred image outlines, and unsmooth and unnatural image motion. Various problems are likely to occur in order to improve the image quality at the time of processing. In order to prevent the deterioration of the image quality from causing a display image to be too small or to be erroneous, the addition of an image display section causes an increase in cost, and in order to improve the image quality, the processing speed is lowered, the display is made slow, and afterimages occur, and the image is further not smooth.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
In view of the above problems, the present invention provides a moving image processing method, and the object of the present invention is achieved by the following technical means.
A moving image processing method includes the steps of:
providing a moving picture including a plurality of frames of consecutive first pictures, the first pictures being interlaced to progressive converted to generate second pictures having a first number of pixels, calculating a motion vector via a gradient method based on the second pictures of preceding and succeeding frames, generating a histogram based on the motion vector, modifying the motion vector based on the histogram,
calculating a position error of a predetermined area in a second image of a previous frame and a next frame based on the dynamic vector, correcting the second image based on the position error to generate a third image with a second pixel number, using a variance between the third pixel number and the second pixel number as a correction function to obtain a corrected image with the minimized correction function, down-converting the corrected image based on an imaging model function to obtain an image with a second pixel number, and repeatedly and iteratively generating a fourth image with the third pixel number, wherein the third pixel number is greater than the second pixel number, and the second pixel number is greater than the first pixel number,
color-correcting the fourth image so that the NTSC color gamut ratio is greater than a predetermined value, performing low-pass filtering and high-pass filtering on each pixel of the fourth image to determine an edge value of each pixel, increasing the luminance of the pixel based on the edge value to form a fifth image,
the fifth image forming an interpolation vector between the preceding and following frame images based on the dynamic vector, generating an interpolation frame based on the interpolation vector, generating a sixth image of a predetermined multiple of the fifth image frame number based on the interpolation frame,
and dividing a screen for displaying a sixth image into a plurality of regions for providing backlight, and increasing the voltage amplitude of the screen based on the gray level variation amount of the sixth image, the regions adjusting the luminance of the backlight based on the gray level of the displayed pixel, wherein the luminance of the backlight in the region where the pixel of the low gray level is located is lower than the luminance of the backlight in the region where the pixel of the high gray level is located.
In the method, the vector frequency of the dynamic vector is obtained based on the histogram, and the dynamic vector with the vector frequency in a preset frequency range is corrected into the dynamic vector.
In the method, dynamic vectors are calculated based on the second images of the front and rear frames through a matching algorithm, the dynamic vectors comprise horizontal dynamic vectors moving on the front and rear images and vertical dynamic vectors moving perpendicular to the front and rear images, histograms are generated based on the horizontal dynamic vectors and the vertical dynamic vectors respectively, vector frequencies of the horizontal dynamic vectors and the vertical dynamic vectors are obtained based on the histograms respectively, and the dynamic vectors with the vector frequencies in a preset frequency range are corrected into the dynamic vectors.
In the method, the luminance levels between the pixels are interpolated from the third images of the preceding and following frames based on the position error to correct the third image.
In the method, a fourth image with a third pixel number is assumed based on a third image with a second pixel number, the fourth image is subjected to down-conversion through an imaging model function to generate a corrected image with the second pixel number, the pixel values of all the pixel numbers of the third image are estimated from the fourth image based on a point spread function, the variance between the pixel values of all the pixel numbers and the second pixel number is used as a correction function to obtain a corrected image with the minimum correction function, and the fourth image with the third pixel number is generated through repeated iteration.
In the method, the predetermined value of the NTSC color gamut ratio is 95%.
In the method, the predetermined multiple is 8 times, and the sixth image is magnified by using a two-field cubic convolution.
In the method, low-pass filtering processing and high-pass filtering processing are carried out on each pixel point of a fourth image, the low-pass filtering processing is carried out to obtain a low-pass result for filtering noise, a first high-pass value is obtained based on the low-pass result, second-order filter processing is carried out to obtain a second high-pass value, and if the first high-pass value of the pixel point is larger than a first threshold value and smaller than a second threshold value, the first high-pass value of the pixel point is used as an edge value of the pixel point; and if the first high-pass value of the pixel point is larger than the second threshold value, the second high-pass value of the pixel point is used as the edge value of the pixel point, and the brightness of the pixel point is improved based on the edge value to form a fifth image.
In the method, the screen is a liquid crystal display screen which comprises a thin film transistor, a capacitor and a signal line for inputting voltage.
In the method, after color correcting the fourth image such that the NTSC color gamut ratio is greater than a predetermined value, the fourth image is white balanced.
Advantageous effects
The invention generates the second image with the first pixel number by interlaced-to-progressive conversion, avoids the processing defect caused by interlaced and other factors in image processing, improves the accuracy of image processing by modifying dynamic vectors, corrects the second image based on position errors to generate the third image with the second pixel number, improves the processing speed by batch correction, reduces the power consumption and improves the processing accuracy. And correcting the color of the fourth image to enable the NTSC color gamut ratio to be larger than a preset value, improving the color quality of the image, performing low-pass filtering processing and high-pass filtering processing on each pixel point of the fourth image to determine the edge value of each pixel point, improving the brightness of the pixel points based on the edge value to form a fifth image, and improving the brightness of the image edge to obtain a clearer fifth image. A sixth image of a predetermined multiple of the number of fifth image frames is generated based on the interpolated frames, and then the sixth image is enlarged, and by the frame interpolation processing, the frame frequency in the displayed sixth image becomes higher via a large number of inserted interpolated frames, afterimages are reduced, and the dynamic image characteristics are significantly improved. The brightness of the backlight is adjusted based on the gray level of the displayed pixel, which improves the response speed of the screen, and when a voltage is supplied to the screen, a voltage corresponding to the original gray level is not supplied to the screen, but a voltage having a larger amplitude is supplied. The transmittance of the screen is significantly changed and the screen response speed is improved.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly apparent, and to make the implementation of the content of the description possible for those skilled in the art, and to make the above and other objects, features and advantages of the present invention more obvious, the following description is given by way of example of the specific embodiments of the present invention.
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Various other advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings in the specification are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from them without inventive effort. Also, like parts are designated by like reference numerals throughout the drawings.
In the drawings:
fig. 1 is a schematic diagram of steps of a moving image processing method according to an embodiment of the present invention.
The invention is further explained below with reference to the figures and examples.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be construed as 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.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. The present specification and claims do not distinguish between components by way of noun differences, but rather differentiate between components in function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the invention, but is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the scope of the invention. The scope of the invention is to be determined by the claims appended hereto.
For the purpose of facilitating an understanding of the embodiments of the present invention, the following detailed description will be given by way of example with reference to the accompanying drawings, and the drawings are not intended to limit the embodiments of the present invention.
For better understanding, fig. 1 is a schematic diagram of steps of a moving image processing method according to an embodiment of the present invention, and as shown in fig. 1, a moving image processing method includes the steps of:
providing a moving picture including a plurality of frames of consecutive first pictures, the first pictures being interlaced to progressive converted to generate second pictures having a first number of pixels, calculating a motion vector via a gradient method based on the second pictures of preceding and succeeding frames, generating a histogram based on the motion vector, modifying the motion vector based on the histogram,
calculating a position error of a predetermined region in the second image of the previous and subsequent frames based on the dynamic vector, and generating a third image having a second number of pixels by correcting the second image based on the position error, the batch correction improving processing speed, reducing power consumption, and improving processing accuracy. Taking the variance between the third pixel number and the second pixel number as a correction function to obtain a correction image with the minimized correction function, down-converting the correction image based on an imaging model function to obtain an image with a second pixel number, repeating and iterating to generate a fourth image with the third pixel number, wherein the third pixel number is greater than the second pixel number, the second pixel number is greater than the first pixel number,
and correcting the color of the fourth image to enable the NTSC color gamut ratio to be larger than a preset value, performing low-pass filtering processing and high-pass filtering processing on each pixel point of the fourth image to determine the edge value of each pixel point, improving the brightness of the pixel points based on the edge value to form a fifth image, and improving the brightness of the edge of the image to obtain a clearer fifth image by improving the first pixel number to a third pixel number.
The fifth image forms an interpolation vector between the preceding and following frame images based on the dynamic vector, generates an interpolation frame based on the interpolation vector, generates a sixth image of a predetermined multiple of the fifth image frame number based on the interpolation frame, and further, then enlarges the sixth image. By the frame interpolation processing, the frame rate in the displayed sixth image becomes higher via a large number of interpolated frames, the afterimage is reduced, and the moving image characteristics are significantly improved.
And dividing a screen for displaying a sixth image into a plurality of regions for providing backlight, and increasing the voltage amplitude of the screen based on the gray level variation amount of the sixth image, the regions adjusting the luminance of the backlight based on the gray level of the displayed pixel, wherein the luminance of the backlight in the region where the pixel of the low gray level is located is lower than the luminance of the backlight in the region where the pixel of the high gray level is located. This improves the response speed of the screen, and when a voltage is supplied to the screen, a voltage corresponding to the original gray level is not supplied to the screen, but a voltage having a larger amplitude is supplied. The transmittance of the screen is significantly changed and the screen response speed is improved.
In a preferred embodiment of the method, the vector frequency of the motion vector is obtained based on the histogram, and the motion vector having the vector frequency within the predetermined frequency range is modified into the motion vector.
In a preferred embodiment of the method, a dynamic vector is calculated based on the second image of the previous and subsequent frames via a matching algorithm, the dynamic vector includes a horizontal dynamic vector for movement of the previous and subsequent images and a vertical dynamic vector for movement perpendicular to the previous and subsequent images, histograms are generated based on the horizontal dynamic vector and the vertical dynamic vector, respectively, vector frequencies of the horizontal dynamic vector and the vertical dynamic vector are obtained based on the histograms, and the dynamic vector with the vector frequency in a predetermined frequency range is modified into the dynamic vector.
In a preferred embodiment of the method, the luminance levels between the pixels are interpolated from the third images of the preceding and following frames to modify the third image on the basis of the position error.
In a preferred embodiment of the method, a fourth image with a third pixel number is assumed based on a third image with a second pixel number, the fourth image is down-converted by an imaging model function to generate a corrected image with the second pixel number, the pixel values of all the pixel numbers of the third image are estimated from the fourth image based on the point spread function, the variance between the pixel values of all the pixel numbers and the second pixel number is used as a correction function to obtain a corrected image with the minimum correction function, and the fourth image with the third pixel number is generated by repeated iteration.
In a preferred embodiment of the method, the predetermined value of the NTSC gamut ratio is 95%.
In a preferred embodiment of the method, the predetermined multiple is 8 times, and the sixth image is magnified using a two-field cubic convolution.
In a preferred embodiment of the method, each pixel point of the fourth image is subjected to low-pass filtering processing and high-pass filtering processing, the low-pass filtering processing obtains a low-pass result for filtering noise, a first high-pass value is obtained based on the low-pass result, second-order filter processing obtains a second high-pass value, and if the first high-pass value of the pixel point is greater than the first threshold and smaller than the second threshold, the first high-pass value of the pixel point is used as an edge value of the pixel point; and if the first high-pass value of the pixel point is larger than a second threshold value, the second high-pass value of the pixel point is used as the edge value of the pixel point, and the brightness of the pixel point is improved based on the edge value to form a fifth image.
In a preferred embodiment of the method, the screen is a liquid crystal display screen including a thin film transistor, a capacitor, and a signal line for inputting a voltage.
In a preferred embodiment of the method, the fourth image is white balanced after color correcting the fourth image such that the NTSC gamut ratio is greater than a predetermined value.
For a further understanding of the treatment process of the present invention, reference is made to the following examples.
In a preferred embodiment, vectors of the flow of pixels of the second image of the preceding and following frames are calculated, and the position error of each image is measured based on the vectors.
In a preferred embodiment, smoothing, error processing and flaw processing are performed in sequence in the fifth image. In a preferred embodiment, the dynamic image is from a blu-ray DVD, CD, or an image generated from streaming, internet signals.
In a preferred embodiment, said sixth image is processed via bilinear interpolation or bicubic convolution magnification. In bilinear interpolation, four surrounding pixels are extracted and calculated, and an insufficient image is interpolated in enlargement. In the bicubic convolution, 16 pixel values in the standard coordinates after conversion are extracted from the coordinates before conversion, and the pixel values after conversion are determined by weighted average calculation of the extracted pixel values to enlarge the sixth image.
In a preferred embodiment, when the frame frequency is 8 times, frame images 7 times as many as the original frames are generated by the frame interpolation process, the total amount of data is 8 times, and the frame interpolated data can be more accurately obtained by the clearer fifth image on-frame interpolation process, so that a smoother image with almost no afterimage can be obtained, moving image characteristics can be improved, the afterimage can be reduced, and the defect of unnatural liquid crystal display can be remarkably improved. In a preferred embodiment, the predetermined multiple is greater than the ratio of the third number of pixels to the second number of pixels and less than twice the ratio, which both improves the image quality and avoids image distortion problems due to inserted data.
In a preferred embodiment, in the still area of the screen, since the afterimage is not generated, the screen voltage amplitude is not changed when the gray level variation of the sixth image is set to be smaller than a predetermined variation value, and the screen voltage amplitude is increased when the gray level variation is larger than the predetermined variation value. This improves processing speed, saves power consumption, and improves display quality.
In a preferred embodiment, the brightness of the backlight varies according to the image in each region in one screen. For example, in the case where a region for displaying a low gray level exists in the screen, the backlight luminance in the region is made low, and in the case where a region for displaying a high gray level exists in the screen, the backlight luminance in the region is made higher. Then, the transmittance of each pixel is determined according to the backlight luminance.
In a preferred embodiment, in each region in one screen, the luminance is increased when the region displays a white image, the luminance is decreased when the region displays a black image four so that the contrast in the screen is increased, a sixth image is displayed by backlight luminance adjustment, and further, the transmittance of each pixel is determined according to the backlight luminance to display the sixth image.
In a preferred embodiment, in each region in one screen, the width of the backlight area is larger than the width of the pixel of the sixth image. The interval of the backlight area is smaller than the interval of the pixels of the sixth image, which is advantageous to improve the display quality of the image.
In a preferred embodiment, the imaging model function is computationally generated using a one-dimensional linear filter in length and in width.
In a preferred embodiment, one frame is formed by combining a plurality of frames of an image.
In a preferred embodiment, one pixel may include dots of a plurality of color elements of the same color. In this case, the plurality of color elements may have different sized regions that contribute to the display. Alternatively, by separately controlling a plurality of dots of color elements of the same color, gray scales can be expressed. By using such color elements, display closer to a real object can be performed or power consumption can be reduced.
In a preferred embodiment, in the sixth image, the pixels are provided in a matrix. In the case of performing full-color display, pixels are arranged in stripes and dots of three color elements are arranged in a triangle.
In a preferred embodiment, enlarging the sixth image generates an image with a resolution of 1440 × 1080 from an image with a resolution of 800 × 600.
In a preferred embodiment, a motion vector is detected from the input previous and next frame images by block matching; calculating a histogram of the detected dynamic vector; correction processing is performed based on the calculated histogram so as not to output an erroneously detected motion vector, which enables the motion image to accurately detect a motion vector and prevents erroneous frame interpolation due to erroneous detection of a motion vector, resulting in excellent image display with smooth motion. An interpolation frame is generated from the previous and subsequent frame images based on the motion vector subjected to the correction processing.
In a preferred embodiment, the detection of the motion vector includes a process for detecting, as the parameter value, a motion vector of at least one pixel among pixels in the images forming the preceding and following frames.
In a preferred embodiment, the generated interpolated frame is sequentially output together with the input image, which increases the processing speed of the input image and can improve the quality problem caused by motion blur.
In a preferred embodiment, a fourth image with a third pixel number is assumed based on a third image with a second pixel number, the fourth image is converted by an imaging model function in a down-conversion mode to generate a corrected image with the second pixel number, pixel values of all the pixel numbers of the third image are estimated from the fourth image based on a point spread function, the pixel values are calculated, and the fourth image is generated in a second mode.
In one embodiment, a method includes,
providing a moving picture including a plurality of frames of consecutive first pictures, the first pictures being interlaced to progressive converted to generate second pictures having a first number of pixels, calculating a motion vector via a gradient method based on the second pictures of preceding and succeeding frames, generating a histogram based on the motion vector, modifying the motion vector based on the histogram,
calculating a position error of a predetermined region in the second image of the previous and subsequent frames based on the dynamic vector, and generating a third image having a second number of pixels by correcting the second image based on the position error, the batch correction improving processing speed, reducing power consumption, and improving processing accuracy.
And correcting the color of the third image to enable the NTSC color gamut ratio to be larger than a preset value, performing low-pass filtering processing and high-pass filtering processing on each pixel point of the third image to determine the edge value of each pixel point, improving the brightness of the pixel points based on the edge value to form a fifth image, and improving the brightness of the edge of the image to obtain a clearer fifth image by improving the first pixel number to a third pixel number.
The fifth image forms an interpolation vector between the preceding and following frame images based on the dynamic vector, generates an interpolation frame based on the interpolation vector, generates a sixth image of a predetermined multiple of the fifth image frame number based on the interpolation frame, and further, then enlarges the sixth image. By the frame interpolation processing, the frame rate in the displayed sixth image becomes higher via a large number of interpolated frames, the afterimage is reduced, and the moving image characteristics are significantly improved.
And dividing a screen for displaying a sixth image into a plurality of regions for providing backlight, and increasing the voltage amplitude of the screen based on the gray level variation amount of the sixth image, the regions adjusting the luminance of the backlight based on the gray level of the displayed pixel, wherein the luminance of the backlight in the region where the pixel of the low gray level is located is lower than the luminance of the backlight in the region where the pixel of the high gray level is located. This improves the response speed of the screen, and when a voltage is supplied to the screen, a voltage corresponding to the original gray level is not supplied to the screen, but a voltage having a larger amplitude is supplied. The transmittance of the screen is significantly changed and the screen response speed is improved.
Industrial applicability
The moving image processing method of the present invention can be manufactured and used in the field of image processing.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to limit the application to the details which may be employed.
These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by one skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the methods of the present application, individual components or steps may be decomposed and/or recombined. These decompositions and/or recombinations should be considered equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. A moving image processing method, comprising the steps of:
providing a moving picture including a plurality of frames of consecutive first pictures, said first pictures being interlaced-to-progressive converted to generate second pictures having a first number of pixels, calculating a motion vector via a gradient method based on said second pictures of preceding and succeeding frames, generating a histogram based on said motion vector, modifying the motion vector based on said histogram,
calculating a position error of a predetermined area in a second image of a previous frame and a next frame based on the dynamic vector, correcting the second image based on the position error to generate a third image with a second pixel number, obtaining a corrected image with a minimized correction function by using a variance of the third pixel number and the second pixel number as a correction function, down-converting the corrected image based on an imaging model function to obtain an image with the second pixel number, and repeatedly iterating to generate a fourth image with the third pixel number, wherein the third pixel number is greater than the second pixel number, and the second pixel number is greater than the first pixel number,
color-correcting the fourth image so that the NTSC color gamut ratio is greater than a predetermined value, low-pass filtering and high-pass filtering each pixel of the fourth image to determine an edge value of each pixel, increasing the luminance of the pixel based on the edge value to form a fifth image,
the fifth image forming an interpolation vector between the preceding and following frame images based on the dynamic vector, generating an interpolation frame based on the interpolation vector, generating a sixth image of a predetermined multiple of the fifth image frame number based on the interpolation frame,
and dividing a screen for displaying a sixth image into a plurality of regions for providing backlight, and increasing the voltage amplitude of the screen based on the gray level variation amount of the sixth image, the regions adjusting the luminance of the backlight based on the gray level of the displayed pixel, wherein the luminance of the backlight in the region where the pixel of the low gray level is located is lower than the luminance of the backlight in the region where the pixel of the high gray level is located.
2. The processing method of claim 1, wherein the vector frequency of the motion vector is obtained based on a histogram, and the motion vector having the vector frequency within a predetermined frequency range is modified into the motion vector.
3. The processing method according to claim 1, wherein a dynamic vector is calculated based on the second image of the preceding and following frames via a matching algorithm, the dynamic vector including a horizontal dynamic vector in which the preceding and following images move and a vertical dynamic vector in which the preceding and following images move perpendicular to the preceding and following images, histograms are generated based on the horizontal dynamic vector and the vertical dynamic vector, respectively, vector frequencies of the horizontal dynamic vector and the vertical dynamic vector are obtained based on the histograms, respectively, and the dynamic vector having a vector frequency in a predetermined frequency range is modified into the dynamic vector.
4. The processing method according to claim 1, wherein based on the position error, a luminance level between pixels is interpolated from the third images of the preceding and following frames to correct the third images.
5. The processing method of claim 1, wherein a fourth image of a third pixel number is assumed based on the third image of the second pixel number, the fourth image is down-converted by an imaging model function to generate a corrected image of the second pixel number, the pixel values of all the pixel numbers of the third image are estimated from the fourth image based on the point spread function, the corrected image in which the correction function is minimized is obtained by using the variance of the pixel values of all the pixel numbers and the second pixel number as the correction function, and the fourth image of the third pixel number is generated by repeating iteration.
6. The processing method of claim 1, wherein said predetermined value of NTSC gamut ratio is 95%.
7. The processing method of claim 1, wherein the predetermined multiple is 8 times, and the sixth image is magnified using a two-field cubic convolution.
8. The method of claim 1, wherein in the low-pass filtering and high-pass filtering, the low-pass filtering obtains a low-pass result for filtering noise, and obtains a first high-pass value based on the low-pass result, and the second-order filtering obtains a second high-pass value, and if the first high-pass value of the pixel is greater than the first threshold and smaller than the second threshold, the first high-pass value of the pixel is used as the edge value of the pixel; and if the first high-pass value of the pixel point is larger than a second threshold value, the second high-pass value of the pixel point is used as the edge value of the pixel point, and the brightness of the pixel point is improved based on the edge value to form a fifth image.
9. The method of claim 1, wherein the screen is a liquid crystal display screen including a thin film transistor, a capacitor, and a signal line for inputting a voltage.
10. The method of claim 1, wherein white balancing the fourth image after color correcting the fourth image such that the NTSC gamut ratio is greater than the predetermined value.
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| CN115423716A (en) * | 2022-09-05 | 2022-12-02 | 深圳市新弘途科技有限公司 | Image enhancement method, device and equipment based on multidimensional filtering and storage medium |
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| CN115423716A (en) * | 2022-09-05 | 2022-12-02 | 深圳市新弘途科技有限公司 | Image enhancement method, device and equipment based on multidimensional filtering and storage medium |
| CN115423716B (en) * | 2022-09-05 | 2024-04-26 | 深圳市新弘途科技有限公司 | Image enhancement method, device, equipment and storage medium based on multidimensional filtering |
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