Image processing device and image processing method

Abstract

The invention relates to an image processing device and an image processing method. An image processing device comprises an output circuit, a processing circuit and a receiving circuit. The output circuit includes a plurality of connection ports for performing handshake through a plurality of connected ones of the plurality of connection ports to obtain a plurality of pieces of display capability data through the plurality of connected ones of the plurality of connection ports, and for outputting a plurality of pieces of picture data through the plurality of connected ones of the plurality of connection ports, respectively. The processing circuit is coupled to the output circuit and is used for determining the splicing mode resolution according to the plurality of display capability data. The receiving circuit is coupled to the processing circuit and is used for carrying out handshake according to the splicing mode resolution to obtain a first image with the splicing mode resolution. The processing circuit is used for cutting the first image into a plurality of sub-images respectively corresponding to a plurality of pieces of display capability data and generating a plurality of pieces of picture data respectively comprising the plurality of sub-images.

Description

Technical Field

[0001] The present disclosure relates to image processing technology, and more particularly to an image processing device and an image processing method capable of automatically optimizing spliced ​​images. Background Art

[0002] As modern consumers' demand for audio and video playback continues to increase, large-scale image applications can be seen everywhere in daily life. For example, electronic menus, TV walls, and driving simulation games. The cost of large-size display devices is much higher than the solution of splicing multiple small-size display devices, and large-size display devices also have a higher failure rate, so the current mainstream is to use multiple small-size display devices to provide spliced ​​images. However, the number of output terminals of the video signal source may not be enough to drive the required number of small-size display devices, and the transmission interface of the video signal source may not be compatible with some small-size display devices. Summary of the invention

[0003] The present disclosure document provides an image processing device, which includes an output circuit, a processing circuit and a receiving circuit. The output circuit includes multiple connection ports, which are used to perform handshaking through multiple connected ones of the multiple connection ports to obtain multiple display capability data respectively through multiple connected ones of the multiple connection ports. The output circuit is also used to output multiple screen data respectively through multiple connected ones of the multiple connection ports. The processing circuit is coupled to the output circuit, and is used to determine the splicing mode resolution according to the multiple display capability data. The receiving circuit is coupled to the processing circuit, and is used to perform handshaking according to the splicing mode resolution to obtain a first image with the splicing mode resolution. The processing circuit is used to cut the first image into multiple sub-images corresponding to the multiple display capability data respectively, and is used to generate multiple screen data respectively including the multiple sub-images.

[0004] The present disclosure document provides an image processing method, which includes the following steps: performing handshaking through multiple connected ones of the multiple connection ports of the output circuit to obtain multiple display capability data respectively through the multiple connected ones of the multiple connection ports; determining the splicing mode resolution according to the multiple display capability data through the processing circuit, wherein the processing circuit is coupled to the output circuit; performing handshaking according to the splicing mode resolution through the receiving circuit to obtain a first image with the splicing mode resolution; cutting the first image into multiple sub-images corresponding to the multiple display capability data respectively through the processing circuit to generate multiple screen data respectively including the multiple sub-images; and outputting the multiple screen data respectively through the multiple connected ones of the multiple connection ports.

[0005] The above-mentioned image processing device and image processing method can automatically optimize the spliced ​​images according to the number and placement of the display devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 FIG. 1 is a simplified functional block diagram of an image processing device according to an embodiment of the present disclosure.

[0007] Figure 2 FIG. 4 is a flow chart of an image processing method according to an embodiment of the present disclosure.

[0008] Figure 3 FIG. 1 is a schematic diagram of display devices arranged to form a rectangular spliced ​​screen according to an embodiment of the present disclosure.

[0009] Figure 4 FIG. 1 is a schematic diagram of display devices arranged to form a rectangular spliced ​​screen according to an embodiment of the present disclosure.

[0010] Figure 5 FIG. 1 is a schematic diagram of display devices arranged to form a rectangular spliced ​​screen according to some embodiments of the present disclosure.

[0011] Figure 6 FIG. 1 is a schematic diagram of display devices arranged to form a rectangular spliced ​​screen according to some embodiments of the present disclosure.

[0012] Figure 7 Schematic diagram of the position of the sub-image in the first image.

[0013] Figure 8 A schematic diagram showing the arrangement of display devices in a physical environment. DETAILED DESCRIPTION

[0014] The following will illustrate the embodiments of the present disclosure with reference to the related drawings. In the drawings, the same reference numerals represent the same or similar elements or method flows.

[0015] Figure 1 1 is a simplified functional block diagram of an image processing device 100 according to an embodiment of the present disclosure. The image processing device 100 includes an output circuit 110, a processing circuit 120, and a receiving circuit 130. The image processing device 100 is used to couple to a video source VS and display devices 103_1 to 103_4. The video source VS can transmit a single image to the image processing device 100 in a single-stream transport mode. The image processing device 100 is used to automatically cut and distribute the single image to the display devices 103_1 to 103_4 according to the arrangement of the display devices 103_1 to 103_4 to generate an optimized spliced ​​picture. In some embodiments, the video source VS can be implemented by a personal computer, a TV set-top box, or other suitable electronic devices that can generate image data.

[0016] The output circuit 110 includes a plurality of connection ports CPa_1 to CPa_5. The connection ports CPa_1 to CPa_5 can be respectively used for communication connection with the display device. For example, the connection ports CPa_1 to CPa_4 are respectively communication connected with the display devices 103_1 to 103_4, that is, the connection ports CPa_1 to CPa_4 are in a connected state. The output circuit 110 is used to perform handshake with the display devices 103_1 to 103_4 through the connected connection ports CPa_1 to CPa_4, so as to obtain a plurality of display capability data DD1 to DD4 from the display devices 103_1 to 103_4 through the connected connection ports CPa_1 to CPa_4. The output circuit 110 is also used to output a plurality of screen data (not shown) to the display devices 103_1 to 103_4 through the connected connection ports CPa_1 to CPa_4, wherein the plurality of screen data respectively include a plurality of sub-images PD1 to PD4. In some embodiments, the display capability data DD1-DD4 each include the corresponding display device's: posture, relative position relationship with other display devices, size, supported resolution or any combination thereof. The aforementioned "posture" includes the display device's three-dimensional space coordinates and / or rotation angles on one or more coordinate axes.

[0017] The processing circuit 120 is coupled to the output circuit 110 and is used to determine the splicing mode resolution ST according to the display capability data DD1-DD4. The receiving circuit 130 is coupled to the processing circuit 120 and is used to receive the splicing mode resolution ST from the processing circuit 120. The receiving circuit 130 is also connected to the video source VS through one or more connection ports (for simplicity, Figure 1 Only the connection port CPb of the receiving circuit 130 is shown. The receiving circuit 130 will handshake with the video source VS according to the stitching mode resolution ST. For example, the receiving circuit 130 can transmit the stitching mode resolution ST to the video source VS during the handshaking process. After the handshake with the video source VS is completed, the receiving circuit 130 is used to obtain a single first image IMa with the stitching mode resolution ST sent back by the video source VS. The processing circuit 120 is used to cut the first image IMa into a plurality of sub-images PD1-PD4 corresponding to the display capability data DD1-DD4 respectively, and to generate a plurality of picture data respectively including the plurality of sub-images PD1-PD4.

[0018] In some embodiments, the connection ports CPa_1-CPa_4 and the connection port CPb are each one of the following: USB Type-C, Display Port, HDMI, and MIPI. It should be understood that the number of the connection ports CPa_1-CPa_5 is only an exemplary embodiment and is not intended to limit the scope of the present disclosure.

[0019] Figure 2 Flow chart of the image processing method 200 according to an embodiment of the present disclosure. In step S210, the output circuit 110 performs handshaking with the display devices 103_1-103_4 through the connected connection ports CPa_1-CPa_4 to obtain display capability data DD1-DD4 from the connected connection ports CPa_1-CPa_4.

[0020] Please refer to Figure 3 and Figure 4 ,in Figure 3 and Figure 4 The schematic diagram of display devices 103_1-103_4 arranged to form a rectangular spliced ​​screen according to some embodiments of the present disclosure is shown in FIG. 1. In step S220, the analysis circuit 122 of the processing circuit 120 receives the display capability data DD1-DD4 from the output circuit 110, and determines the splicing mode resolution ST according to the display capability data DD1-DD4.

[0021] For example, in Figure 3 In the embodiment, the analysis circuit 122 obtains the relative position relationship of the display devices 103_1 to 103_4 according to the display capability data DD1 to DD4, and then learns that the display devices 103_1 to 103_4 are arranged as follows: Figure 3 The analysis circuit 122 may also obtain multiple supported resolutions of the display devices 103_1 to 103_4 according to the display capability data DD1 to DD4. The analysis circuit 122 may set the number of horizontal pixels of the splicing mode resolution ST to N times the number of horizontal pixels of the largest or smallest of the multiple supported resolutions of the display devices 103_1 to 103_4. For example, when the largest of the multiple supported resolutions is 2K (i.e., 1920×1080), the splicing mode resolution ST is 7680×1080.

[0022] For example, in Figure 4 In the embodiment, the analysis circuit 122 obtains the relative position relationship of the display devices 103_1 to 103_4 according to the display capability data DD1 to DD4, and then learns that the display devices 103_1 to 103_4 are arranged as follows: Figure 4 The analysis circuit 122 may also obtain multiple supported resolutions of the display devices 103_1-103_4 according to the display capability data DD1-DD4. The analysis circuit 122 sets the number of horizontal pixels of the splicing mode resolution ST to N times the number of horizontal pixels of the largest or smallest of the multiple supported resolutions of the display devices 103_1-103_4, and sets the number of vertical pixels of the splicing mode resolution ST to M times the number of vertical pixels of the largest or smallest of the multiple supported resolutions of the display devices 103_1-103_4. For example, when the largest of the multiple supported resolutions is 2560×1440, the splicing mode resolution ST is 5120×2880.

[0023] In summary, the number of pixels in at least one axis of the stitching mode resolution ST is a positive integer multiple greater than or equal to 2 of the number of pixels in at least one corresponding axis of the largest or smallest of the plurality of supporting resolutions.

[0024] Then, in Figure 2 In step S230 , the receiving circuit 130 receives the stitching mode resolution ST from the analyzing circuit 122 , and exchanges with the video source VS according to the stitching mode resolution ST to obtain the first image IMa having the stitching mode resolution ST returned by the video source VS.

[0025] In step S240, the image cutting circuit 124 of the processing circuit 120 is used to receive the first image IMa from the receiving circuit 130, and to cut the first image IMa into a plurality of sub-images PD1-PD4 corresponding to the display capability data DD1-DD4. In addition, the image cutting circuit 124 is also used to generate a plurality of picture data respectively including the plurality of sub-images PD1-PD4.

[0026] Next, in step S250 , the output circuit 110 receives a plurality of picture data from the image cutting circuit 124 , and outputs the plurality of picture data respectively through the connected connection ports CPa_1 ˜ CPa_4 , so that the display devices 103_1 ˜ 103_4 display the corresponding sub-images PD1 ˜ PD4 .

[0027] The following will describe the manner in which the image cutting circuit 124 generates the sub-images PD1-PD4 in step S240 in different embodiments. It is worth mentioning that in the following description, multiple parameters (e.g., image content and resolution) of the sub-images PD1-PD4 are determined by the analysis circuit 122 in step S220 according to the display capability data DD1-DD4, and these parameters are stored in a memory circuit (not shown) of the image cutting circuit 124. However, the present disclosure is not limited thereto, and in some embodiments, the image cutting circuit 124 may also receive the display capability data DD1-DD4 from the analysis circuit 122 in step S240, and determine the parameters of the sub-images PD1-PD4 by itself.

[0028] In some embodiments, the analysis circuit 122 determines the resolution of each of the plurality of sub-images PD1-PD4 according to the number of display devices 103_1-103_4 represented by the display capability data DD1-DD4 (e.g., 4) and the relative position relationship of the display devices 103_1-103_4 recorded in the display capability data DD1-DD4. Figure 3 In the embodiment, the display capability data DD1-DD4 record the relative position relationship of the display devices 103_1-103_4 corresponding to a 1×4 matrix, so the analysis circuit 122 controls the image cutting circuit 124 to cut the first image IMa with a resolution of 7680×1080 into 4 sub-images PD1-PD4 with a resolution of 2K (i.e., 1920×1080) respectively.

[0029] In some embodiments, the analysis circuit 122 may further determine whether to further adjust the resolutions of the sub-images PD1-PD4 after cutting according to the supported resolutions of the display devices 103_1-103_4 recorded in the display capability data DD1-DD4. For example, when the supported resolutions of the display devices 103_1-103_4 are 2K, HD, HD, and 2K, respectively, the analysis circuit 122 may control the image cutting circuit 124 to reduce the resolutions of the sub-images PD1 and PD2 from 2K to HD, and vice versa.

[0030] In some embodiments, the analysis circuit 122 controls the image cutting circuit 124 to cut the first image IMa according to the relative position relationship of the display devices 103_1-103_4 recorded in the display capability data DD1-DD4. Figure 3In the embodiment, according to the relative position relationship of the display devices 103_1-103_4 in the display capability data DD1-DD4, the analysis circuit 122 learns that the display devices 103_1-103_4 are arranged from left to right in a 1×4 matrix, so the image cutting circuit 124 cuts the first image IMa into sub-images PD1-PD4 from left to right. Therefore, the relative position relationship of the sub-images PD1-PD4 in the first image IMa is the same as the relative position relationship of the display devices 103_1-103_4.

[0031] Please refer to Figure 5 ,in Figure 5 FIG. 1 is a schematic diagram of display devices 103_1 to 103_4 arranged to form a rectangular spliced ​​screen according to some embodiments of the present disclosure. Figure 5 In the embodiment, the analysis circuit 122 knows that the display devices 103_1-103_4 are arranged in a 2×2 matrix 500 according to the relative position relationship recorded in the display capability data DD1-DD4. In addition, the analysis circuit 122 also knows the heights of the columns R1-R2 and the widths of the rows C1-C2 in the matrix according to the sizes of the display devices 103_1-103_4 recorded in the display capability data DD1-DD4.

[0032] The analysis circuit 122 determines whether the height difference 510 between two adjacent columns (e.g., columns R1-R2) in the matrix 500 exceeds a height threshold (e.g., 2 inches), and determines whether the width difference 520 between two adjacent rows (e.g., rows C1-C2) in the matrix 500 exceeds a width threshold (e.g., 2 inches), so as to determine whether to further adjust the resolution of the sub-images PD1-PD4 after cutting. Figure 5 As shown, when the analysis circuit 122 determines that (1) the display device arrangement 103_1-103_4 is a matrix 500 to form a rectangular spliced ​​image using sub-images PD1-PD4, and (2) the heights of two adjacent columns R1-R2 of the matrix 500 are different and the height difference 510 is less than the height threshold, the analysis circuit 122 controls the image cutting circuit 124 to reduce the vertical resolution of the sub-image PD2 of the column R1. Therefore, when displaying the spliced ​​image, the display device 103_2 will display a partial black area 530.

[0033] Similarly, when the analysis circuit 122 determines that (1) the display devices 103_1 to 103_4 are arranged in a matrix 500 to form a rectangular spliced ​​image using the sub-images PD1 to PD4, and (2) the widths of two adjacent rows C1 to C2 of the matrix 500 are different and the width difference 520 is less than the width threshold, the analysis circuit 122 controls the image cutting circuit 124 to reduce the horizontal resolution of the sub-image PD4 of row C1. Therefore, when displaying the spliced ​​image, the display device 103_4 will display a partial black area 540.

[0034] In other embodiments, when the analysis circuit 122 determines that (1) the display devices 103_1-103_4 are arranged in a matrix 500 to form a rectangular mosaic image using the sub-images PD_1-PD_4, and (2) the height difference 510 between adjacent columns R1-R2 of the matrix 500 is greater than or equal to the height threshold, or the width difference 520 between adjacent rows C1-C2 of the matrix 500 is greater than or equal to the width threshold, the analysis circuit 122 does not execute Figure 2 In other words, the analysis circuit 122 will abandon the step S220 , S230 and S240 of making the display devices 103_1 ˜ 103_4 form a rectangular spliced ​​image.

[0035] In detail, after step S210 is completed, the analysis circuit 122 generates a non-stitching mode resolution NST and transmits the non-stitching mode resolution NST to the receiving circuit 130. In some embodiments, the non-stitching mode resolution NST can be the largest or smallest of the supported resolutions of the display devices 130_1 to 130_4. Then, the receiving circuit 130 uses the non-stitching mode resolution NST to handshake with the video source VS to obtain a single second image IMb with the non-stitching mode resolution NST returned by the video source VS. The image cutting circuit 124 omits cutting the second image IMb and generates a plurality of display data each including the second image IMb. Then, after the above steps are completed, the output circuit 110 will continue to execute step S250 to output these display data to the display devices 103_1 to 103_4, so that the display devices 103_1 to 103_4 provide display screens with the same content.

[0036] Please refer to Figure 6 ,in Figure 6 FIG. 6 is a schematic diagram of display devices 103_1 to 103_4 arranged to form a rectangular spliced ​​screen according to some embodiments of the present disclosure. In this embodiment, the display devices 103_1 to 103_4 are arranged in an asymmetric matrix 600. Figure 5 The content of adjusting the resolution of sub-images PD1 to PD4 according to the height threshold and the width threshold described above is applicable to Figure 6 For the sake of brevity, the embodiments of the present invention will not be repeated here. It is worth mentioning that in Figure 6 In the embodiment of the present invention, the analysis circuit 122 may analyze the postures of the display devices 130_1-130_4 recorded in the display capability data DD1-DD4 (for example, in the vertical Figure 6The image cutting circuit 124 is used to determine the placement state of the display devices 130_1 to 130_4, and then control the image cutting circuit 124 to rotate one or more of the sub-images PD1 to PD4. For example, when the analysis circuit 122 determines that the display device 130_1 is in a vertical state rotated 90° to the right according to the postures of the display devices 130_1 to 130_4, the analysis circuit 122 controls the image cutting circuit 124 to further rotate the sub-image PD1 to the right by 90° after the image cutting. In other words, when rotating the sub-image, the image cutting circuit 124 uses the same rotation angle and rotation direction as the posture of the corresponding display device.

[0037] Please refer to Figure 7 and Figure 8 . Figure 7 FIG. 4 is a schematic diagram showing the positions of the sub-images PD1 - PD4 in the first image IMa. Figure 8 FIG. 1 is a schematic diagram showing the arrangement of display devices 103_1 to 103_4 in the physical environment PE. Figure 7 and Figure 8 In the embodiment, the display devices 103_1-103_4 are used to form an irregular (or non-rectangular) spliced ​​image, and the display devices 103_1-103_4 may not be adjacent. The analysis circuit 122 obtains the posture of the display devices 103_1-103_4 from the display capability data DD1-DD4, wherein the posture includes the spatial coordinates OD1-OD4 and the rotation angle (e.g., in the vertical direction) of the display devices 103_1-103_4 in the physical environment PE. Figure 7-Figure 8 In some embodiments, the aforementioned “spatial coordinates” refer to the coordinates of the center points of the display devices 103_1 to 103_4 in the physical environment PE.

[0038] The analysis circuit 122 is used to control the position of the image cutting circuit 124 to cut the first image IMa according to the posture. For example, the multiple center points T1~T4 of the sub-images PD1~PD4 form a first figure 700 in the first image IMa, and the spatial coordinates OD1~OD4 of the display devices 103_1~103_4 form a second figure 800 in the physical environment PE, and the first figure 700 and the second figure 800 are similar to each other. For another example, the figure formed by the sub-images PD1~PD4 in the first image IMa is similar to the figure formed by the display devices 103_1~103_4 in the physical environment PE. It is worth mentioning that the analysis circuit 122 can be based on Figure 6 In a similar manner, the image cutting circuit 124 is controlled to rotate the sub-images PD1 and PD4 after image cutting, so that the upright display devices 103_1 and 103_4 can display normally. For the sake of brevity, it is not repeated here.

[0039] As can be seen from the above, when the video source VS does not need to support the multi-stream transport mode and does not need to have multiple output ports, the image processing device 100 and the image processing method 200 can automatically optimize the splicing images according to the number and placement of the display devices 103_1 to 103_4. Therefore, the image processing device 100 and the image processing method 200 can reduce the difficulty of users setting up a multi-screen system.

[0040] Certain words are used in the specification and the scope of the patent application to refer to specific components. However, those with ordinary knowledge in the relevant technical field should understand that the same component may be referred to by different terms. The specification and the scope of the patent application do not use the difference in name as a way to distinguish components, but use the difference in function of the components as the basis for distinction. The "include" mentioned in the specification and the scope of the patent application is an open-ended term, so it should be interpreted as "include but not limited to". In addition, "coupling" here includes any direct and indirect connection means. Therefore, if the text describes a first element coupled to a second element, it means that the first element can be directly connected to the second element through electrical connection or signal connection methods such as wireless transmission, optical transmission, etc., or indirectly connected to the second element electrically or by signal through other elements or connection means.

[0041] The description method of "and / or" used herein includes any combination of one or more of the listed items. In addition, unless otherwise specified in the specification, any singular term also includes the meaning of the plural term.

[0042] The above are only preferred embodiments of the present disclosure, and various modifications and equivalent changes may be made to the present disclosure without departing from the scope or spirit of the present disclosure. In summary, all modifications and equivalent changes made to the present disclosure within the scope of the attached claims are within the scope of the present disclosure.

[0043] Explanation of symbols

[0044] 100: Image processing device

[0045] 103_1 to 103_4: Display device

[0046] 110: Output circuit

[0047] 120: Processing circuit

[0048] 122: Analyzing Circuits

[0049] 124: Image cutting circuit

[0050] 130: receiving circuit

[0051] VS: Video source

[0052] CPa_1~CPa_5: Connection port

[0053] CPb: Connection port

[0054] DD1~DD4: Display capability data

[0055] PD1~PD4: sub-image

[0056] ST: Stitching mode resolution

[0057] NST: Non-stitching mode resolution

[0058] IMa: First Image

[0059] IMb: Second Image

[0060] 200: Image Processing Methods

[0061] S210~S250: Steps

[0062] 500, 600: Matrix

[0063] 510: Height Difference

[0064] 520: Width Difference

[0065] 530, 540: Black area

[0066] C1~C3: Column

[0067] R1~R2:row

[0068] 700: First Graphic

[0069] 800: Second Graphic

[0070] T1~T4: Center point

[0071] OD1~OD4: space coordinates

[0072] PE: Physical environment.

Claims

1. An image processing device, comprising: The output circuit includes a plurality of connection ports, and is used to perform handshaking through a plurality of the plurality of connection ports that are connected, so as to obtain a plurality of display capability data through the plurality of the plurality of connection ports that are connected, and to output a plurality of picture data through the plurality of the plurality of connection ports that are connected; A processing circuit, coupled to the output circuit, for determining a splicing mode resolution according to the plurality of display capability data; as well as A receiving circuit, coupled to the processing circuit, is used for handshaking according to the stitching mode resolution to obtain a first image with the stitching mode resolution. The processing circuit is used for cutting the first image into a plurality of sub-images respectively corresponding to the plurality of display capability data, and for generating the plurality of frame data respectively including the plurality of sub-images.

2. The image processing device as claimed in claim 1, wherein the processing circuit determines the resolution of each of the plurality of sub-images according to the number of display devices represented by the plurality of display capability data and the relative position relationship with other display devices contained in each of the plurality of display capability data.

3. The image processing device as claimed in claim 1, wherein the plurality of display capability data respectively include a plurality of postures of a plurality of display devices, and the plurality of postures respectively include a plurality of spatial coordinates, The multiple center points of the multiple sub-images form a first figure in the first image, the multiple space coordinates form a second figure, and the first figure and the second figure are similar shapes.

4. The image processing device as claimed in claim 1, wherein the plurality of display capability data are used to record the relative position relationship of a plurality of display devices, The relative position relationship of the plurality of sub-images in the first image is the same as the relative position relationship of the plurality of corresponding display devices.

5. The image processing device as claimed in claim 1, wherein the plurality of display capability data respectively include a plurality of sizes of a plurality of display devices, When the processing circuit determines, through the plurality of display capability data, that (1) the plurality of display devices are arranged in a matrix to form a rectangular mosaic image using the plurality of sub-images, and (2) a height difference between a first column and a second column adjacent to the matrix is ​​greater than or equal to a height threshold, or a width difference between a first row and a second row adjacent to the matrix is ​​greater than or equal to a width threshold: The receiving circuit performs handshaking using the non-stitching mode resolution to obtain second image data, wherein the second image data includes a second image having the non-stitching mode resolution. The processing circuit is used for generating the plurality of frame data each including the second image.

6. The image processing device as claimed in claim 1, wherein the plurality of display capability data respectively include a plurality of sizes of a plurality of display devices, When the processing circuit determines through the plurality of display capability data that (1) the plurality of display devices are arranged in a matrix to form a rectangular spliced ​​image using the plurality of sub-images, and (2) the heights of the first and second adjacent columns of the matrix are different and the height difference is less than a height threshold: The processing circuit reduces the resolution of one or more sub-images of one of the first row and the second row, and When the processing circuit determines through the plurality of display capability data that (1) the plurality of display devices are arranged in a matrix to form a rectangular mosaic image using the plurality of sub-images, and (2) the widths of the first row and the second row adjacent to the matrix are different and the width difference is less than a width threshold: The processing circuit reduces the resolution of one or more sub-images of one of the first row and the second row.

7. The image processing device as claimed in claim 1, wherein the plurality of display capability data respectively comprise a plurality of supported resolutions of a plurality of display devices, and the stitching mode resolution is N times the largest or smallest of the plurality of supported resolutions, wherein N is a positive integer greater than or equal to 2.

8. An image processing method, comprising: Perform handshaking through the plurality of connected ones of the plurality of connection ports of the output circuit, so as to obtain a plurality of display capability data respectively through the plurality of connected ones of the plurality of connection ports; Determining the splicing mode resolution according to the plurality of display capability data through a processing circuit, wherein the processing circuit is coupled to the output circuit; Through a receiving circuit, handshaking is performed according to the splicing mode resolution to obtain a first image having the splicing mode resolution; Cutting the first image into a plurality of sub-images respectively corresponding to the plurality of display capability data through the processing circuit to generate the plurality of frame data respectively including the plurality of sub-images; and The plurality of picture data are respectively outputted through the plurality of connected ports.

9. The image processing method as claimed in claim 8, wherein cutting the first image into the plurality of sub-images respectively corresponding to the plurality of display capability data comprises: The resolutions of the sub-images are determined according to the number of display devices represented by the display capability data and the relative position relationship of the display devices recorded by the display capability data.

10. The image processing method of claim 8, wherein the plurality of display capability data respectively include a plurality of postures of a plurality of display devices, and the plurality of postures respectively include a plurality of space coordinates, The first image is cut into the plurality of sub-images respectively corresponding to the plurality of display capability data, comprising: A first figure formed by the multiple center points of the multiple sub-images in the first image is set to be similar to a second figure formed by the multiple spatial coordinates.

Images