TWI775158B - Display system and image clarity enhancement method thereof - Google Patents

Abstract

The disclosure provides a display system and an image clarity enhancement method thereof. The display system includes a remote device and a local device. A first camera of the remote device captures a first field of view to generate a first image stream. A second camera of the local device captures a second field of view to generate a second image stream. A processing circuit of the local device generates a third image stream, so that the display shows a screen including a first display area corresponding to the first image stream and a second display area corresponding to the second image stream. The processing circuit adjusts an image clarity of at least one of the first display area and the second display area based on an exposure information and a motion corresponding to at least one of the first image stream and the second image stream.

Description

Display system and image definition enhancement method thereof

The present invention relates to a display technology, and more particularly, to a display system and a method for enhancing image definition thereof.

In today's various display system applications, such as video conferencing or other entertainment, surveillance, business, engineering, medical, etc. application scenarios, the real-time image viewed by the user may be the current device (such as notebook computers, AIO computers, desks, etc.). devices such as laptops, head-mounted displays, AR glasses, smart glasses, etc.) and/or other devices’ cameras. However, the clarity of such displayed images is affected by the exposure of the source camera. Under low light sources, the camera's automatic exposure mechanism usually increases the exposure time to increase the exposure. Vague.

This phenomenon of image blurring, especially in motion pictures, may be more serious. Moreover, under some software and hardware architectures, the technology for adjusting the partially displayed image is limited or difficult. The contents of multiple display areas in the split screen are image streams provided by different source cameras, so the contents of different display areas have different exposure times (blur levels). When a certain display area in the split screen is adjusted, other areas outside the display area will also be adjusted with the same intensity. Therefore, how to consider the importance of the display image of the source camera in the entire display image for parameter setting, thereby improving the viewing quality of the user, is a problem that must be paid attention to.

The invention provides a display system and an image definition enhancement method thereof, so as to properly adjust the image definition of the picture displayed by the display.

Embodiments of the present invention provide a display system including a remote device and a local device. The remote device includes a first camera for photographing the first field of view to generate a first image stream. The local device includes a second camera for capturing the second field of view to generate a second image stream. The local device also includes a display and processing circuitry. The processing circuit is coupled to the second camera and the display. The processing circuit is configured to obtain the first image stream from the remote device through the communication network. The processing circuit uses the first image stream and the second image stream to generate a third image stream to the display, so that the display screen displayed by the display includes a first display area corresponding to the first image stream and a second display area corresponding to the second image stream. The second display area of the video stream. The processing circuit adjusts the image definition of at least one of the first display area and the second display area according to exposure information and momentum corresponding to at least one of the first image stream and the second image stream.

Embodiments of the present invention provide an image definition enhancement method of a display system. The image definition enhancement method includes: shooting a first field of view with a first camera of a remote device to generate a first image stream; shooting a second field of view with a second camera of a local device to generate a second image stream; The processing circuit of the device obtains the first image stream from the remote device through the communication network; the processing circuit uses the first image stream and the second image stream to generate a third image stream to the display of the local device, so that the The display screen displayed by the display includes a first display area corresponding to the first image stream and a second display area corresponding to the second image stream; and the processing circuit according to the first image stream and the second image stream at least The exposure information and momentum corresponding to one are used to adjust the image definition of at least one of the first display area and the second display area.

Based on the above, the display system and the image definition enhancement method according to the embodiments of the present invention can use the remote device to generate the first image stream and the local device to generate the second image stream to generate a third image stream to the Display of the local device. In addition, according to the exposure information and momentum corresponding to at least one of the first image stream and the second image stream, the local device can dynamically adjust the image definition of at least one of the first display area and the second display area, thereby It can improve the problem of image blur caused by long exposure time and improve the viewing quality.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

The term "coupled (or connected)" as used throughout this specification (including the scope of the application) may refer to any direct or indirect means of connection. For example, if it is described in the text that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected to the second device through another device or some other device. indirectly connected to the second device by a connecting means. Terms such as "first" and "second" mentioned in the full text of the description (including the scope of the patent application) in this case are used to designate the names of elements or to distinguish different embodiments or scopes, rather than to limit the number of elements The upper or lower limit of , nor is it intended to limit the order of the elements. Also, where possible, elements/components/steps using the same reference numerals in the drawings and embodiments represent the same or similar parts. Elements/components/steps that use the same reference numerals or use the same terminology in different embodiments may refer to relative descriptions of each other.

FIG. 1 is a schematic diagram of a circuit block of a display system 10 according to an embodiment of the present invention. The display system 10 includes a remote device 100 and a local device 200 . The camera 110 of the remote device 100 can capture the first field of view to generate an image stream 112 . The camera 210 of the local device 200 can capture the second field of view to generate an image stream 212 . The local device 200 also includes a display 220 and a processing circuit 230 . The processing circuit 230 is coupled to the camera 210 and the display 220 . The processing circuit 230 can obtain the video stream 112 from the remote device 100 through the communication network.

FIG. 2 is a schematic diagram of a display screen 300 displayed on the display 220 according to an example of an application scenario of the present invention. Please refer to FIG. 1 and FIG. 2 . The processing circuit 230 can use the image stream 112 and the image stream 212 to generate the image stream 222 to the display 220, so that the display screen 300 displayed by the display 220 includes the display area 310 corresponding to the image stream 112 and the display area 310 corresponding to the image stream Display area 320 of stream 212 . The processing circuit 230 can adjust the image definition of at least one of the display area 310 and the display area 320 according to exposure information and momentum corresponding to at least one of the image stream 112 and the image stream 212 . Therefore, the display system 10 can appropriately adjust the image definition of the picture displayed on the display 220 .

The display system 10 can be applied to situations such as video conferencing or other applications, such as entertainment, surveillance, business, engineering, medical, etc., which is not limited by the present invention. For example, the remote device 100 and the local device 200 may be a notebook computer, an AIO (All in One) computer, a desktop computer, a head-mounted display, Augmented Reality (AR) glasses, and smart glasses and other devices (but not limited to). Depending on the application context, the image stream 112 generated by the camera 110 and the image stream 212 generated by the camera 210 may be related images. For example, in a video conference application, the camera 110 and the camera 210 can respectively photograph different users in the same conference room to generate the image stream 112 and the image stream 212 . In another application scenario, the camera 110 can capture a user in the remote conference room to generate the image stream 112 , and the camera 210 can capture another user in the local conference room to generate the image stream 212 .

Regardless, the exposure information and momentum corresponding to image stream 112 and image stream 212 may be different. The processing circuit 230 of the local device 200 can adjust the image definition of at least one of the display area 310 and the display area 320 of the display 220 according to the exposure information and momentum corresponding to at least one of the image stream 112 and the image stream 212 . According to design requirements, in an embodiment of the present invention, the exposure information includes a long exposure time and/or other exposure information, and the image definition includes at least one of sharpness and contrast. By.

FIG. 3 is a circuit block diagram illustrating the processing circuit 230 shown in FIG. 1 according to an embodiment of the present invention. In the embodiment shown in FIG. 3 , the processing circuit 230 of the local device 200 includes a communication interface circuit 240 and an arithmetic circuit 250 . The communication circuit 240 can establish a connection with the remote device 100 through a communication network. The arithmetic circuit 250 is coupled to the communication interface circuit 240 to obtain the image stream 112 of the camera 110 of the remote device 100 and the exposure information corresponding to the image stream 112 . The arithmetic circuit 250 is also coupled to the camera 210 of the local device 200 to obtain the image stream 212 and exposure information corresponding to the image stream 212 . The arithmetic circuit 250 can use the video stream 112 and the video stream 212 to generate the video stream 222 for the display 220 .

FIG. 4 is a circuit block diagram illustrating the operation circuit 250 shown in FIG. 3 according to an embodiment of the present invention. In the embodiment shown in FIG. 4 , the operation circuit 250 includes a central processing unit (Central Processing Unit, CPU) 253 and a graphics processing unit (Graphics Processing Unit, GPU) 257 . The central processing unit 253 is coupled to the communication interface circuit 240 to obtain the image stream 112 and exposure information corresponding to the image stream 112 through the communication interface circuit 240 . The CPU 253 is also coupled to the camera 210 to obtain the image stream 212 and exposure information corresponding to the image stream 212 . The CPU 253 can use the video stream 112 and the video stream 212 to generate video content. The graphics processor 257 is coupled to the CPU 253 to receive image content. The graphics processor 257 can generate the video stream 222 to the display 220 according to the video content.

Please refer to Figure 1. In an embodiment of the present invention, the processing circuit 230 can use the image stream 112 to calculate the momentum corresponding to the image stream 112 . In addition, the processing circuit 230 can also use the video stream 212 to calculate the momentum corresponding to the video stream 212 . This embodiment does not limit the implementation of the momentum calculation. According to design requirements, in some embodiments, the momentum can be similar (or the same) as the moving vector in the conventional Motion Estimation Algorithm.

In some embodiments, the processing circuit 230 may use the video stream 222 to divide the display screen 300 into the display area 310 and the display area 320 . The processing circuit 230 can use the content of the display area 310 to calculate the momentum corresponding to the video stream 112 . The processing circuit 230 may also use the content of the display area 320 to calculate the momentum corresponding to the video stream 212 .

The calculation method of the momentum can be determined according to design requirements. For example, in some embodiments, processing circuit 230 may calculate a motion vector (referred to herein as a first motion vector) for each of a plurality of pixels (pixels) in display area 310 . The processing circuit 230 can calculate the average value of these first motion vectors as the momentum corresponding to the image stream 112 . By analogy, processing circuit 230 may calculate a motion vector (referred to herein as a second motion vector) for each of the plurality of pixels in display area 320, and processing circuit 230 may calculate the average of these second motion vectors as The momentum corresponding to the video stream 212 .

。在式(1)之中，

代表在這個顯示區域中的第i個像素的移動向量的x分量，

代表所述第i個像素的移動向量的y分量，而

是在這個顯示區域中的像素總數。

式(1) For example (but not limited to), the processing circuit 230 can use the following formula (1) to calculate the average value of the motion vectors of a display area

. In formula (1),

represents the x component of the motion vector for the ith pixel in this display area,

represents the y-component of the motion vector for the ith pixel, and

is the total number of pixels in this display area.

Formula 1)

According to design requirements, in some other embodiments, the processing circuit 230 can calculate the average value of the first motion vectors of the display area 310 (herein referred to as the first average value) and The average of these second motion vectors of the display area 320 (herein referred to as the second average). Then, the processing circuit 230 may normalize the first average value to obtain an image momentum level (referred to herein as a first image momentum level) corresponding to the first average value as the image stream 112 corresponding to the momentum. Similarly, the processing circuit 230 can normalize the second average value to obtain an image momentum level (herein referred to as the second image momentum level) corresponding to the second average value as the image stream 212 corresponds to of the momentum.

The manner in which the normalization is performed may be determined according to design requirements. For example, in some embodiments, the range of the average value can be divided into three intervals (as shown in the "Image Momentum Level" field in Table 1 below). When the average value falls within the first interval, the first image momentum level "1" can be used as the momentum. When the average value falls within the second interval, the first image momentum level "2" can be used as the momentum. When the average value falls within the third interval, the first image momentum level "3" can be used as the momentum.

In some embodiments (but not limited thereto), the processing circuit 230 can convert the exposure information and momentum corresponding to the image stream 112 into a sharpness enhancement level (referred to herein as a first sharpness enhancement level). The processing circuit 230 can convert the exposure information and momentum corresponding to the image stream 212 into another sharpness enhancement level (referred to herein as a second sharpness enhancement level). For example, the processing circuit 230 can use the following Table 1 to convert the camera exposure value (exposure information) and the image momentum level into a display image sharpness enhancement level (image sharpness enhancement parameter). The higher the source camera exposure value, the higher the displayed image sharpness enhancement level, and the lower the source camera exposure value, the lower the displayed image sharpness enhancement level. Under the same camera exposure value, the higher the image momentum level, the higher the displayed image sharpness enhancement level. The lower the image momentum level, the lower the displayed image sharpness enhancement level. Table 1: Inputs and outputs of processing circuit 230 enter output camera exposure value Image Momentum Level Displays the image sharpness enhancement level -4 1 1 2 2 3 3 0 1 2 2 3 3 4 4 1 3 2 4 3 5

According to design requirements, in some embodiments, the processing circuit 230 may perform front-end image processing. For example, the processing circuit 230 may adjust the image sharpness of the image stream 112 based on the first sharpness enhancement level, and adjust the image sharpness of the image stream 212 based on the second sharpness enhancement level. In this way, the local device 200 can independently adjust the image definition of the display area 310 and/or the display area 320 . Therefore, the processing circuit 230 can improve the image blur caused by the long exposure time and improve the viewing quality.

In other embodiments, the processing circuit 230 may perform back-end image processing. For example, the processing circuit 230 may adjust the image sharpness of the image stream 222 based on the sharpness enhancement level. In the case that the device allows different image definition adjustments for different display areas of the display screen, the processing circuit 230 may adjust the image definition of the display area 310 based on the first definition enhancement level, and adjust the image definition based on the second definition The sharpness of the image in the display area 320 can be adjusted by adjusting the intensity enhancement level.

。 However, some devices can adjust the image definition for the entire area of the display screen 300 , but cannot perform differential adjustment for different display areas of the display screen 300 . In such a case, the processing circuit 230 may define respective weight values for the display area 310 and the display area 320 of the display screen 300 . This embodiment does not limit the manner of determining the weight value. In some embodiments, the weight value may be determined according to design requirements. In other embodiments, the manner of determining the weight value may depend on the proportion of the display area in the entire display screen 300 . For example, the proportions of the display area 310 and the display area 320 in a display screen 300 may be 70% and 17%, respectively, then the processing circuit 230 may set the weight values of the display areas 310 and 320 as 70% and 17%, respectively. %. The processing circuit 230 may perform a weighted average of the first sharpness enhancement level and the second sharpness enhancement level to obtain a weighted average level. Then, the processing circuit 230 can adjust the image sharpness of the whole area of the display screen 300 based on the weighted average level, that is, adjust the image sharpness of the display area 310 and the display area 320 . For example, suppose that the weight value of display area 310 is 70% and the weight value of display area 320 is 17%, and that the first sharpness enhancement level is "5" and the second sharpness enhancement level is "1" , then the weighted average level is

.

FIG. 5 is a schematic flowchart illustrating an image definition enhancement method of a display system according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 5 , in step S410 , the camera 110 of the remote device 100 can capture the first field of view to generate the image stream 112 . In step S420 , the camera 210 of the local device 200 can capture the second field of view to generate the image stream 212 . It should be noted that there is no restriction on the order of steps S410 and S420. In some implementation scenarios, step S410 and step S420 may be performed simultaneously. In other implementation scenarios, step S420 may be performed earlier (or later) than step S410 may be performed.

In step S430, the processing circuit 230 of the local device 200 can obtain the image stream 112 from the remote device 100 through the communication network. In step S440 , the processing circuit 230 can use the image stream 112 and the image stream 212 to generate the image stream 222 to the display 220 of the local device 200 , so that the display screen 300 displayed on the display 220 includes the corresponding image stream 112 and the display area 320 corresponding to the video stream 212 . In step S450 , the processing circuit 230 may adjust the image definition of at least one of the display area 310 and the display area 320 according to the exposure information and momentum corresponding to at least one of the image stream 112 and the image stream 212 .

FIG. 6 is a schematic flowchart of an image definition enhancement method according to still another embodiment of the present invention. 1 and FIG. 6 , in step S610 , the processing circuit 230 of the local device 200 may obtain exposure information from the source camera (ie, the camera 110 of the remote device 100 and/or the camera 210 of the local device 200 ), wherein the exposure information is The information corresponds to the image stream 112 generated by the camera 110 or the image stream 212 generated by the camera 210 . In step S620 , the processing circuit 230 may analyze/calculate the momentum of the video stream 112 and the video stream 212 , and determine the weight value of the display area 310 and the display area 320 . In step S630, the processing circuit 230 may determine the enhancement level of the displayed image definition according to the exposure information, the momentum and the weight value. For example, the processing circuit 230 can use the mapping table in Table 1 or a mapping model with similar functions to convert various exposure information and momentum into corresponding display image sharpness enhancement levels.

In step S640, the processing circuit 230 may determine whether the display image definition enhancement level obtained from step S630 has changed. If the processing circuit 230 determines that the display image definition enhancement level has not changed (the determination result in step S640 is "No"), the processing circuit 230 may return to step S610. If the processing circuit 230 determines that the display image definition enhancement level is to be changed (the determination result in step S640 is "Yes"), the processing circuit 230 may proceed to step S650. In step S650, the processing circuit 230 may adjust the display image sharpness according to the new display image sharpness enhancement level.

According to different design requirements, the implementation of the blocks of the remote device 100 , the processing circuit 230 of the local device 200 , the communication interface circuit 240 and/or the operation circuit 250 may be hardware, firmware, Software (software, that is, programs) or a combination of more than one of the above three.

In terms of hardware, the above-mentioned blocks of the remote device 100 , the processing circuit 230 of the local device 200 , the communication interface circuit 240 and/or the arithmetic circuit 250 can be implemented as logic circuits on an integrated circuit. The above-mentioned related functions of the remote device 100 , the processing circuit 230 of the local device 200 , the communication interface circuit 240 and/or the operation circuit 250 can be programmed using hardware description languages (such as Verilog HDL or VHDL) or other suitable programming. The language is implemented as hardware. For example, the above-mentioned related functions of the remote device 100, the processing circuit 230 of the local device 200, the communication interface circuit 240 and/or the arithmetic circuit 250 can be implemented in one or more controllers, microcontrollers, microprocessors , Application-specific integrated circuits (ASICs), digital signal processors (DSPs), Field Programmable Gate Arrays (FPGAs) and/or other processing units Various logic blocks, modules and circuits.

In the form of software and/or firmware, the above-mentioned functions of the remote device 100 , the processing circuit 230 of the local device 200 , the communication interface circuit 240 and/or the arithmetic circuit 250 can be implemented as programming codes. . For example, the above-mentioned remote device 100, local device 200 processing circuit 230, communication interface circuit 240 and/or operations can be implemented using common programming languages (such as C, C++, or assembly language) or other suitable programming languages. circuit 250. The programming code may be recorded/stored in a recording medium. In some embodiments, the recording medium includes, for example, a read only memory (Read Only Memory, ROM), a random access memory (Random Access Memory, RAM), and/or a storage device. The storage device includes a hard disk drive (HDD), a solid-state drive (SSD), or other storage devices. In other embodiments, the recording medium may include a "non-transitory computer readable medium". For example, tape, disk, card, semiconductor memory, programmable logic circuits, etc. may be used to implement the non-transitory computer-readable medium. A computer, a central processing unit (CPU), a controller, a microcontroller or a microprocessor can read and execute the programming code from the recording medium. Also, the programming code may be supplied to the computer (or CPU) via an arbitrary transmission medium (communication network, broadcast waves, etc.). The communication network is, for example, the Internet, a wired communication network, a wireless communication network, or other communication media.

To sum up, the display system 10 and the image definition enhancement method in the above-mentioned embodiments can use the image stream 112 generated by the camera 110 of the remote device 100 and the image stream generated by the camera 210 of the local device 200 Stream 212 to generate video stream 222 to display 220 of local device 200 . In addition, according to exposure information and momentum corresponding to at least one of the image stream 112 and the image stream 212 , the local device 200 can dynamically adjust the image definition of at least one of the display area 310 and the display area 320 . In this way, the local device 200 can solve the problem of blurred images displayed by the source camera due to a long exposure time, and improve the viewing quality.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

10: Display system 100: Remote device 110, 210: Camera 112, 212, 222: Video streaming 200: local device 220: Display 230: Processing Circuits 240: Communication interface circuit 250: Operational Circuits 253: CPU 257: Graphics processor 300: Display screen 310, 320: Display area S410～S450, S610～S650: Steps

FIG. 1 is a schematic diagram of a circuit block of a display system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a display screen displayed on a display according to an example of an application scenario of the present invention. FIG. 3 is a circuit block diagram illustrating the processing circuit shown in FIG. 1 according to an embodiment of the present invention. FIG. 4 is a circuit block diagram of the operation circuit shown in FIG. 3 according to an embodiment of the present invention. FIG. 5 is a schematic flowchart illustrating an image definition enhancement method of a display system according to an embodiment of the present invention. FIG. 6 is a schematic flowchart of an image definition enhancement method according to still another embodiment of the present invention.

S410~S450: Steps

Claims (14)

A display system includes: a remote device including a first camera for capturing a first field of view to generate a first image stream; and a local device including a second camera for capturing a second The local device further includes: a display; and a processing circuit, coupled to the second camera and the display, configured to obtain information from the remote device through a communication network the first image stream, wherein the processing circuit uses the first image stream and the second image stream to generate a third image stream to the display, so that a display screen displayed by the display includes the corresponding in a first display area of the first image stream and a second display area corresponding to the second image stream, and the processing circuit is based on at least one of the first image stream and the second image stream A corresponding exposure information and a momentum to adjust an image sharpness of at least one of the first display area and the second display area, wherein the exposure information includes a long exposure time, and the image sharpness includes a sharp at least one of intensity and a contrast ratio, wherein the processing circuit converts the exposure information and the momentum corresponding to the first image stream into a first sharpness enhancement level, and the processing circuit converts the second image stream The corresponding exposure information and the momentum are converted into a second sharpness enhancement level, and the processing circuit processes the first sharpness enhancement level and the second sharpness enhancement level. A weighted average level is obtained by performing a line weighted average, and the processing circuit adjusts the image definition of the first display area and the second display area based on the weighted average level. The display system of claim 1, wherein the processing circuit uses the first image stream to calculate the momentum corresponding to the first image stream, and the processing circuit uses the second image stream to calculate the first image stream The momentum corresponding to the two video streams. The display system of claim 1, wherein the processing circuit uses the third image stream to segment the first display area and the second display area from the display screen, and the processing circuit uses the first display area The content of the second image stream is used to calculate the momentum corresponding to the first image stream, and the processing circuit uses the content of the second display area to calculate the momentum corresponding to the second image stream. The display system of claim 3, wherein the processing circuit calculates a first motion vector for each of a plurality of pixels in the first display area, the processing circuit calculates an average value of the first motion vectors As the momentum corresponding to the first image stream, the processing circuit calculates a second motion vector of each of the plurality of pixels in the second display area, and the processing circuit calculates the sum of the second motion vectors An average value is used as the momentum corresponding to the second video stream. The display system of claim 3, wherein the processing circuit calculates a first motion vector for each of the plurality of pixels in the first display area, the processing circuit calculates a first motion vector of the first motion vectors an average value, the processing circuit normalizes the first average value to obtain a first image momentum level as the first image Like the momentum corresponding to the stream, the processing circuit calculates a second motion vector for each of the plurality of pixels in the second display area, the processing circuit calculates a second average of the second motion vectors , and the processing circuit normalizes the second average value to obtain a second image momentum level as the momentum corresponding to the second image stream. The display system of claim 1, wherein the processing circuit converts the exposure information and the momentum corresponding to the first image stream into a first sharpness enhancement level, and the processing circuit is based on the first sharpness enhancement level to adjust the image sharpness of the first image stream, the processing circuit converts the exposure information and the momentum corresponding to the second image stream into a second sharpness enhancement level, and the processing circuit is based on the The second sharpness enhancement level adjusts the image sharpness of the second image stream. The display system of claim 1, wherein the processing circuit converts the exposure information and the momentum corresponding to the first image stream into a first sharpness enhancement level, and the processing circuit is based on the first sharpness enhancement level to adjust the image sharpness of the first display area, the processing circuit converts the exposure information and the momentum corresponding to the second image stream into a second sharpness enhancement level, and the processing circuit is based on the first Two sharpness enhancement levels to adjust the image sharpness of the second display area. An image definition enhancement method of a display system, comprising: capturing a first field of view by a first camera of a remote device to generate a first image stream; A second camera of a local device captures a second field of view to generate a second image stream; a processing circuit of the local device obtains the first image stream from the remote device through a communication network; The first image stream and the second image stream are used by the processing circuit to generate a third image stream to a display of the local device, so that a display image displayed by the display includes a display image corresponding to the first image stream. a first display area of the image stream and a second display area corresponding to the second image stream; the processing circuit according to a corresponding one of at least one of the first image stream and the second image stream Exposure information and a momentum to adjust an image definition of at least one of the first display area and the second display area; the processing circuit converts the exposure information and the momentum corresponding to the first image stream into a first sharpness enhancement level; the processing circuit converts the exposure information and the momentum corresponding to the second image stream into a second sharpness enhancement level; the processing circuit converts the first sharpness enhancement level A weighted average level is obtained by performing a weighted average with the second sharpness enhancement level; and the processing circuit adjusts the image sharpness of the first display area and the second display area based on the weighted average level. The image definition enhancement method of claim 8, further comprising: using the first image stream to calculate the momentum corresponding to the first image stream by the processing circuit; and The computing circuit uses the second video stream to calculate the momentum corresponding to the second video stream. The image definition enhancement method according to claim 8, further comprising: using the third image stream by the processing circuit to divide the first display area and the second display area from the display screen; The circuit uses the content of the first display area to calculate the momentum corresponding to the first image stream; and the processing circuit uses the content of the second display area to calculate the momentum corresponding to the second image stream. The image definition enhancement method of claim 10, further comprising: calculating, by the processing circuit, a first motion vector of each of a plurality of pixels in the first display area; calculating, by the processing circuit, the first motion vectors An average value of motion vectors is used as the momentum corresponding to the first image stream; a second motion vector for each of a plurality of pixels in the second display area is calculated by the processing circuit; and a second motion vector is calculated by the processing circuit The circuit calculates an average value of the second motion vectors as the momentum corresponding to the second image stream. The image definition enhancement method of claim 10, further comprising: calculating, by the processing circuit, a first motion vector of each of a plurality of pixels in the first display area; calculating, by the processing circuit, the first motion vectors a first mean value of a motion vector; The first average value is normalized by the processing circuit to obtain a first image momentum level as the momentum corresponding to the first image stream; the processing circuit calculates a plurality of pixels in the second display area a second motion vector of each of the as the momentum corresponding to the second video stream. The image definition enhancement method according to claim 8, further comprising: converting, by the processing circuit, the exposure information and the momentum corresponding to the first image stream into a first definition enhancement level; Adjust the image sharpness of the first image stream based on the first sharpness enhancement level; the processing circuit converts the exposure information and the momentum corresponding to the second image stream into a second sharpness enhancement level; and adjusting the image definition of the second video stream by the processing circuit based on the second definition enhancement level. The image definition enhancement method according to claim 8, further comprising: converting, by the processing circuit, the exposure information and the momentum corresponding to the first image stream into a first definition enhancement level; Adjust the image sharpness of the first display area based on the first sharpness enhancement level; the processing circuit uses the exposure information corresponding to the second image stream and the motion The amount is converted into a second definition enhancement level; and the image definition of the second display area is adjusted by the processing circuit based on the second definition enhancement level.

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