Video processing device and video processing method

Abstract

To avoid sensation of a quality change on a screen from a user in accordance with the change of a quality setting at the time of a scene switching while performing a quality setting that is adopted to each scene.SOLUTION: A video processing device according to an embodiment includes: a scene determination unit configured to determine a scene of an input image; a similarity determination unit configured to determine similarity between frames of the input image using an image feature; a setting information generation unit configured to obtain target setting information indicating a setting value of video processing based on a determination result of a scene and an image feature of the frame; a calculation unit that obtains switching speed information indicating a switching speed of a setting value of video processing from the setting value of video processing for the input image before switching of the scene to the setting value of video processing for the input image after switching of the scene based on a determination result of the similarity; and a setting information determination unit that determines speed variable setting information for causing the setting value of video processing for the input image to reach the setting value based on the target setting information at a speed based on the switching speed information.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The embodiments relate to a video processing device and a video processing method employed in a television display device or the like. [Background technology]

[0002] In video processing devices such as television display devices, various types of video processing are performed to improve image quality. To perform video processing according to the input video, the input video is analyzed, and video processing is performed at a timing and intensity corresponding to the analysis results.

[0003] For example, pixel value detection, edge detection, flatness analysis, noise level, etc. are obtained for the input video, and based on the results of these analyses, various types of video processing such as contrast correction, color correction, noise removal, sharpening, etc. Furthermore, technology has been developed that classifies the scenes of the input video and performs video processing appropriate for the scene.

[0004] However, depending on the scene change situation, the user may perceive a change in the image quality displayed on the screen due to the change in image processing settings, which can cause the user to feel that the image is unnatural. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-39786 Summary of the Invention [Problem to be solved by the invention]

[0006] The embodiments aim to provide a video processing device and a video processing method that can set image quality appropriate for each scene and prevent the user from noticing changes in image quality on the screen that occur when changing image quality settings when switching scenes. [Means for solving the problem]

[0007] The video processing device of the embodiment includes a scene determination unit that determines a scene when an input image is given, a similarity determination unit that determines the similarity between each frame included in the input image using image features, a setting information generation unit that calculates target setting information indicating a video processing setting value based on the scene determination result and the image features of the frame, a switching speed information calculation unit that calculates switching speed information indicating the speed at which the setting value is switched from the video processing setting value for the input image before the scene determination result changes to the video processing setting value for the input image after the scene determination result changes, based on the similarity determination result, and a setting information determination unit that determines speed variable setting information for causing the video processing setting value for the input image to reach the setting value based on the target setting information at a speed based on the switching speed information. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a block diagram showing a video processing device according to a first embodiment of the present invention. [Figure 2] 2 is a block diagram showing an example of a specific configuration of a video processing setting switching control unit 3 and a video processing setting unit 4 in FIG. 1. FIG. [Figure 3] 4 is a flowchart for explaining the operation of the embodiment. [Figure 4] 10 is a graph for explaining a switching speed coefficient. [Figure 5] 10 is a graph for explaining a switching speed coefficient. [Figure 6] 10 is a graph for explaining a switching speed coefficient. [Figure 7] 10 is a graph for explaining variable speed setting information. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0010] (First embodiment) 1 is a block diagram showing a video processing device according to a first embodiment of the present invention. This embodiment determines the scene of an input video and applies video processing settings appropriate for the scene, while also adjusting the switching speed of the video processing settings depending on the scene switching situation, thereby preventing the user from perceiving changes in image quality on the screen that accompany changes in video processing.

[0011] The video processing device in Fig. 1 includes a video processing unit 1, an input video scene determination unit 2, a video processing setting switching control unit 3, and a video processing setting unit 4. Each unit of the video processing device may be configured by a processor using a CPU (Central Processing Unit), a GPU (Graphic Processing Unit), an FPGA (Field Programmable Gate Array), an NPU (Neural Processing Unit), or the like. Each unit of the video processing device may operate and control each unit according to a program stored in a memory (not shown), or may realize some or all of its functions using hardware electronic circuits.

[0012] An input video is provided to a video processing unit 1, an input video scene determination unit 2, a video processing setting switching control unit 3, and a video processing setting unit 4. The video processing unit 1 performs video processing on the input video and outputs an output video. For example, the video processing unit 1 performs various video processing on the input video, such as contrast adjustment, color correction, noise removal, and sharpening. By providing the output video from the video processing unit 1 to a display device (not shown), an image based on the output video is displayed on the display screen of the display device. As will be described later, the input video has been subjected to optimal video processing according to the scene by the video processing unit 1, allowing the user to view high-quality video based on the input video.

[0013] The input video scene determination unit 2 analyzes the input video (input image) and determines which of several predefined scenes each image of the input video should be classified into. For example, the input video scene determination unit 2 classifies the input video into one of a plurality of predefined scenes, such as a night scene, a sports scene, or an anime scene. For example, the input video scene determination unit 2 may perform scene determination using AI (artificial intelligence). For example, the input video scene determination unit 2 may employ various inference models constructed using a CNN (Convolutional Neural Network), Transformer, Random Forest, Support Vector Machine, etc. The scene determination results by the input video scene determination unit 2 are supplied to the video processing setting unit 4. The input video scene determination unit 2 may perform scene determination for each frame, or may perform scene determination for each predetermined period of multiple frames.

[0014] The video processing setting switching control unit 3 is given an input video and determines switching speed information for controlling the speed of switching of video processing settings when switching the video processing settings for the input video. The video processing setting switching control unit 3 outputs the determined switching speed information to the video processing setting unit 4. Note that the switching speed information indicates the speed of change in the video processing setting value, and the video processing setting switching control unit 3 may, for example, output a speed coefficient that specifies the speed of the setting processing as the switching speed information to the video processing setting unit 4. The video processing setting switching control unit 3 determines the switching speed information at a timing corresponding to the timing of scene determination by the input video scene determination unit 2. Note that the video processing setting switching control unit 3 may also determine the switching speed information at a predetermined cycle, for example, every frame.

[0015] The video processing setting unit 4 is provided with the input video and the scene determination result from the input video scene determination unit 2. Since the scene determination result from the input video scene determination unit 2 changes when a scene is switched, the video processing setting unit 4 determines a scene switch based on the change in the scene determination result. The video processing setting unit 4 obtains setting information (hereinafter also referred to as speed-variable setting information) that defines the setting values ​​of various video processes corresponding to each scene, based on the input video and the scene determination result from the input video scene determination unit 2. For example, the video processing setting unit 4 may obtain, as the setting information, setting values ​​(parameters) that define the strength, etc., of various video processes in the video processing unit 1. In this embodiment, the video processing setting unit 4 sets the setting values ​​in the video processing unit 1 while changing them based on the switching speed information obtained by the video processing setting switching control unit 3. In other words, the setting values ​​of the video processing settings of the video processing unit 1 change at a speed corresponding to the switching speed information after the start of video processing switching. In this way, the setting values ​​of the video settings in the video processing unit 1 are switched (changed) at a speed according to the switching speed information obtained by the video processing setting switching control unit 3.

[0016] FIG. 2 is a block diagram showing an example of a specific configuration of the video processing setting switch control unit 3 and the video processing setting unit 4 in FIG.

[0017] The video processing setting switching control unit 3 includes a feature extraction unit 31, a similarity determination unit 32, a delay unit 33, and a switching speed information calculation unit 34. The video processing setting unit 4 includes an edge extraction unit 41, a setting information generation unit 42, delay units 43 and 44, and a setting information determination unit 45.

[0018] The feature extraction unit 31 obtains image features for different frames of the input video in order to measure the similarity between the different frames (images) of the input video. The feature extraction unit 31 may obtain the features of the input video by, for example, performing hue histogram conversion, frequency histogram conversion, luminance histogram conversion, reduction, etc. on a target frame of the input video as an index of the features of the input video.

[0019] The output of the feature extraction unit 31 is supplied to a similarity determination unit 32 and a delay unit 33. The delay unit 33 delays the output of the feature extraction unit 31 by a predetermined frame period and then supplies the output to the similarity determination unit 32. In this way, the similarity determination unit 32 is provided with the extraction results of the features of the input image before and after the predetermined frame period. The similarity determination unit 32 determines the similarity of the images before and after the predetermined frame, which indicates the degree of similarity between the images before and after the predetermined frame, based on a comparison of the extraction results of the features before and after the predetermined frame period.

[0020] For example, when feature extraction unit 31 extracts features using a histogram, similarity determination unit 32 may determine the similarity based on the squared error of each representative value. Furthermore, when feature extraction unit 31 extracts features using a reduced image, similarity determination unit 32 may determine the similarity based on SSIM (Structural SIMilarity), PSNR (Peak Signal to Noise Ratio), or the like. Similarity determination unit 32 outputs the similarity determination result, obtained by comparing image features before and after a predetermined frame period, to switching speed information calculation unit 34.

[0021] Based on the similarity determination result, the switching speed information calculation unit 34 generates switching speed information for determining the switching speed of the video processing settings and outputs the generated information to the setting information determination unit 45 of the video processing setting unit 4. For example, the switching speed information calculation unit 34 may calculate a switching speed coefficient indicating the degree of speed at which the setting value is changed as the switching speed information and provide the calculated information to the setting information determination unit 45. As will be described later, when the setting information determination unit 45 is set with a switching speed coefficient indicating a relatively slow switching speed based on the switching speed information, the setting value of the video processing settings changes relatively slowly over a relatively long period of time. Conversely, when the setting information determination unit 45 is set with a switching speed coefficient indicating a relatively fast switching speed based on the switching speed information, the setting value of the video processing settings changes relatively quickly (in a relatively short period of time).

[0022] In this embodiment, the switching speed information calculation unit 34 sets the switching speed to a relatively slow speed when the similarity between images is relatively high. Even when a scene is switched, the similarity between the images before and after the scene may be relatively high. In this case, since the change in image is small even when the scene is switched, the user is likely to perceive a change in image quality when the video processing setting value changes with the scene switch. Therefore, in this embodiment, the switching speed of the setting value is slowed. As a result, the change in image quality occurs relatively slowly, making it difficult for the user to perceive a change in image quality associated with the change in video processing setting.

[0023] Conversely, when the similarity between images is relatively low, the switching speed information calculation unit 34 sets a relatively high switching speed. When the similarity between images is relatively low at the time of scene switching, that is, when the image change is large, the change in image quality is not noticeable, and the user is unlikely to perceive the change in image quality that accompanies a change in the setting value. Therefore, in this case, the setting value switching speed is increased to stabilize the image quality in a short period of time.

[0024] The video processing setting unit 4 controls the video processing settings according to this similarity. The edge extraction unit 41 of the video processing setting unit 4 may extract, for example, an edge as one of the features of the input image in order to perform video processing according to the image features in the video processing unit 1. For example, the edge extraction unit 41 extracts flat parts and edge parts for each image of the input video by using difference values ​​or average values ​​from surrounding pixels. The edge extraction unit 41 may also obtain the features of the input video by various histogram conversions. The extraction results of the features of the input video obtained by the edge extraction unit 41 are supplied to the setting information generation unit 42 and the delay unit 43. The delay unit 43 delays the features of the input video obtained by the edge extraction unit 41 by a predetermined frame period and outputs them to the setting information generation unit 42.

[0025] The setting information generation unit 42 determines setting information for video processing in the video processing unit 1 based on the features of the input video determined by the edge extraction unit 41 and the scene determination result supplied from the input video scene determination unit 2. For example, for an area where an edge portion of the image is indicated by the feature extraction result, the setting information generation unit 42 may generate setting information for applying a strong sharpening process, and for an area where a flat portion of the image is indicated and a certain amount of noise or more is detected, the setting information generation unit 42 may generate setting information for applying a strong noise reduction process. Furthermore, the setting information generation unit 42 may generate setting information for contrast correction and color correction according to the overall brightness of the image according to the feature extraction result obtained by the histogram conversion of the edge extraction unit 41. Furthermore, the setting information generation unit 42 obtains setting information by adjusting these setting information according to the scene determination result from the input video scene determination unit 2.

[0026] In this embodiment, the setting information generation unit 42 outputs the setting information obtained for the n-th frame as target setting information Xn to the setting information determination unit 45. The setting information generation unit 42 also outputs the setting information obtained for the na-th frame that is a frame period before the n-th frame as past setting information Xn-a to the setting information determination unit 45.

[0027] For example, if the feature amount determined by edge extraction unit 41 for the n-th frame is defined as feature amount Pn and the scene determination result determined by input video scene determination unit 2 is defined as scene determination result Sn, the target setting information Xn and past setting information Xn-a by setting information generation unit 42 can be expressed by the following equation (1) using function F1. Note that the feature amount determined by edge extraction unit 41 for the na-th frame is defined as feature amount Pn-a and the scene determination result determined by input video scene determination unit 2 is defined as scene determination result Sn-a. Xn = F1(Pn, Sn) Xn-a=F1(Pn-a,Sn-a) …(1) The delay unit 43 delays the output of the edge extraction unit 41 by a predetermined frame period and provides it to the setting information generation unit 42, and the delay unit 44 delays the output of the input video scene determination unit 2 by a predetermined frame period and provides it to the setting information generation unit 42. The delay units 43 and 44 obtain the feature amount Pn-a and the scene determination result Sn-a. Therefore, by using the outputs of the delay units 43 and 44, the setting information generation unit 42 can obtain the past setting information Xn-a. Note that the setting information generation unit 42 may be provided with a memory that stores the target setting information Xn for a frame period. In this case, the setting information generation unit 42 can obtain the past setting information Xn-a from the memory, and the delay units 43 and 44 are unnecessary.

[0028] If the switching speed coefficient calculated by the switching speed information calculation unit 34 for the nth frame is designated as switching speed coefficient Vn, then in the nth frame, the switching speed coefficient Vn, target setting information Xn, and past setting information Xn-a are input to the setting information determination unit 45. Using the target setting information Xn, past setting information Xn-a, and switching speed coefficient Vn, the setting information determination unit 45 obtains speed variable setting information Yn for the nth frame, which is setting information in which the switching speed of the change in the setting value has been adjusted according to the switching speed coefficient Vn. The setting information determination unit 45 determines that this speed variable setting information Yn is used to define the setting values ​​for video processing in the video processing unit 1.

[0029] For example, when speed variable setting information Yn based on a switching speed coefficient Vn indicating a slow switching speed is supplied to the video processing unit 1, it is possible that the setting value set by the speed variable setting information Yn has not yet reached the setting value set by the target setting information Xn by the time the speed variable setting information Yn is changed due to the next scene change. Therefore, the setting information determination unit 45 determines the speed variable setting information Yn using not only the target setting information Xn, past setting information Xn-a, and switching speed coefficient Vn, but also past setting information Yn-a from a frame period before the nth frame. The setting information determination unit 45 outputs the determined speed variable setting information Yn to the video processing unit 1.

[0030] That is, the speed variable setting information Yn obtained by the setting information determination unit 45 can be expressed by the following equation (2) using the function F2. Yn = F2(Xn, Xn-1, Yn-1, Vn) … (2) Next, the operation of the embodiment configured as above will be described with reference to Figures 3 to 7. Figure 3 is a flowchart for explaining the operation of the embodiment, Figures 4 to 6 are graphs for explaining the switching speed coefficient, and Figure 7 is a graph for explaining the speed variable setting information.

[0031] 3, feature extraction unit 31 of video processing setting switching control unit 3 extracts features of an input image. The features extracted by feature extraction unit 31 are provided to similarity determination unit 32, and are also delayed by a predetermined frame period by delay unit 33 before being provided to similarity determination unit 32. Similarity determination unit 32 determines the similarity of the images before and after the predetermined frame period by comparing the features of the images before and after the predetermined frame period (S2).

[0032] The similarity determination unit 32 provides the similarity determination result to the switching speed information calculation unit 34. The switching speed information calculation unit 34 calculates switching speed information according to the similarity. For example, the switching speed information calculation unit 34 calculates a switching speed coefficient Vn as the switching speed information (S3). The switching speed information calculation unit 34 provides the calculated switching speed coefficient Vn to the setting information determination unit 45 of the video processing setting unit 4.

[0033] Figures 4 to 6 show the change in the switching speed coefficient Vn with respect to the similarity, with the horizontal axis representing the similarity and the vertical axis representing the switching speed coefficient Vn. The examples in Figures 4 to 6 all show a characteristic in which the lower the similarity, the larger the switching speed coefficient Vn, and the higher the similarity, the smaller the switching speed coefficient Vn. Figure 4 shows a characteristic in which the switching speed coefficient Vn changes linearly with the level of similarity. Figure 5 shows a characteristic in which the switching speed coefficient Vn changes in a curve with the level of similarity. Figure 6 shows a characteristic in which the switching speed coefficient Vn changes discretely with the level of similarity.

[0034] 3, edge extraction unit 41 of video processing setting unit 4 extracts feature amounts of the input image. The feature amounts extracted by edge extraction unit 41 are provided to setting information generation unit 42, and are also delayed by delay unit 43 by a predetermined frame period before being provided to setting information generation unit 42. Furthermore, input video scene determination unit 2 determines the scene of the input video every predetermined frame period and obtains a determination result. The scene determination result obtained by input video scene determination unit 2 is provided to setting information generation unit 42, and is also delayed by delay unit 44 by a predetermined frame period before being provided to setting information generation unit 42.

[0035] The setting information generation unit 42 generates target setting information Xn, which is setting information for video processing, based on the feature amount Pn and the scene determination result Sn from the edge extraction unit 41 (S12). The setting information generation unit 42 outputs the target setting information Xn obtained based on the feature amount Pn and the scene determination result Sn to the setting information determination unit 45. The setting information generation unit 42 also outputs setting information obtained based on the feature amount Pn-a and the scene determination result Sn-a a frame period before the nth frame as past setting information Xn-a to the setting information determination unit 45 (S13).

[0036] The setting information determination unit 45 determines variable speed setting information Yn based on the target setting information Xn, past setting information Xn-a, switching speed coefficient Vn, and past variable speed setting information Yn-a, and outputs it to the video processing unit 1 (S14).

[0037] Fig. 7 explains the speed variable setting information Yn obtained by the setting information determination unit 45. Note that Fig. 7 shows an example in which the a frame period is one frame period. That is, the input video scene determination unit 2 determines a scene for each frame, and the similarity determination unit 32 determines the similarity between images one frame before and after.

[0038] Assume now that the image processing unit 1 has performed image processing on the input image of the n-1th frame based on past setting information Xn-1 (past speed variable setting information Yn-1). The correction amount (setting value) of the processing based on the past setting information Xn-1 is assumed to be correction amount CA0, as shown in FIG. 7. For the input image of the nth frame, the switching speed information calculation unit 34 outputs a switching speed coefficient Vn, the edge extraction unit 41 outputs a quantity feature Pn, and the input image scene determination unit 2 outputs a scene determination result Sn. The setting information generation unit 42 calculates target setting information Xn based on the quantity feature Pn of the image of the nth frame and the scene determination result Sn of the image of the nth frame. The correction amount of the processing based on this target setting information Xn is assumed to be correction amount CA1, as shown in FIG. 7. The setting information generation unit 42 also outputs information on the past setting information Xn-1.

[0039] The setting information determination unit 45 is also provided with the target setting information Xn, past setting information Xn-1, switching speed coefficient Vn, and past speed variable setting information Yn-1. The setting information determination unit 45 determines speed variable setting information Yn for changing the image processing adjustment amount from CA0 to CA1. In this case, as shown in FIG. 7, the speed variable setting information Yn is information for changing the adjustment amount at a speed corresponding to the switching speed coefficient Vn. In FIG. 7, arrows indicate the change in adjustment amount according to each speed variable setting information Yn corresponding to five switching speed coefficients Vn. That is, when the image similarity between the n-1th frame and the nth frame is low and the switching speed coefficient Vn is large, speed variable setting information Yn for changing the adjustment amount to adjustment amount CA1 in a relatively short time is supplied to the image processing unit 1. Conversely, when the image similarity between the n-1th frame and the nth frame is high and the switching speed coefficient Vn is small, speed variable setting information Yn for changing the adjustment amount to adjustment amount CA1 over a relatively long time is supplied to the image processing unit 1.

[0040] 7 shows an example in which the correction amount based on the past speed variable information Yn-1 reaches the correction amount (CA0) based on the past setting information Xn-1 at the time of the n-1th frame. If the correction amount based on the past speed variable information Yn-1 does not reach the correction amount (CA0) based on the past setting information Xn-1 at the time of the n-1th frame, the setting information determination unit 45 calculates speed variable setting information Yn taking into account the difference between the correction amount based on the past speed variable information Yn-1 and the correction based on the past setting information Xn-1, and outputs the calculated information to the video processing unit 1.

[0041] When a scene changes, there are times when the image changes significantly (low similarity) and times when the image changes very little (high similarity). When a scene changes between images with high similarity, the change in image quality is likely to be noticeable due to the change in image processing that accompanies the scene change. However, in this embodiment, when the similarity between the images before and after the scene change is relatively high, the switching speed coefficient Vn is set to be relatively small, so that the speed at which the correction amount (setting value) of the image processing that accompanies the scene change is small, and the change in image quality is less likely to be perceived by the user.

[0042] On the other hand, when a scene is switched between images with low similarity, the image changes significantly, and the change in image quality accompanying the change in image processing at the scene switch is less noticeable. Therefore, in this embodiment, when the similarity between the images before and after a scene switch is relatively low, the switching speed coefficient Vn is set to be relatively large, thereby increasing the rate of change in the image processing correction amount accompanying the scene switch, allowing the target correction amount to be reached in a short time, and stabilizing the image quality in a short time. In this way, this embodiment adjusts the rate of change in the setting value according to the similarity between images, and is extremely effective as a measure for obtaining natural images with no noticeable change in image quality.

[0043] In this manner, in this embodiment, the scene of the input video is determined and video processing settings appropriate for the scene are applied, and the switching speed of the video processing settings is adjusted according to the scene switching situation, thereby preventing the user from perceiving changes in image quality on the screen that accompany changes in video processing, allowing the user to view natural video regardless of scene switching.

[0044] The present invention is not limited to the above-described embodiments, and various modifications can be made in the implementation stage without departing from the spirit of the invention. Furthermore, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining the disclosed multiple constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiments, if the problem described in the "Problem to be Solved by the Invention" section can be solved and the effect described in the "Effect of the Invention" section can be obtained, the configuration from which these constituent elements are deleted can be extracted as an invention.

[0045] Furthermore, among the technologies described herein, many of the controls and functions, mainly those described in the flowcharts, can be set by a program, and the above-described controls and functions can be realized by a computer reading and executing the program. The program can be recorded or stored, in whole or in part, as a computer program product on a portable medium such as a flexible disk, CD-ROM, or nonvolatile memory, or on a storage medium such as a hard disk or volatile memory, and can be distributed or provided at the time of product shipment, via a portable medium, or via a communication line. A user can easily realize the video processing device and video processing method of this embodiment by downloading the program via a communication network and installing it on a computer, or by installing it on a computer from a recording medium. [Explanation of symbols]

[0046] 1...Video processing unit, 2...Input video scene determination unit, 3...Video processing setting switching control unit, 4...Video processing setting unit, 31...Feature extraction unit, 32...Similarity determination unit, 33, 43, 44...Delay unit, 34...Switching speed information calculation unit, 41...Edge extraction unit, 42...Setting information generation unit, 45...Setting information determination unit.

Claims

1. a scene determination unit that determines a scene when an input image is given; a similarity determination unit that determines the similarity between frames included in the input image using image features; a setting information generation unit that calculates target setting information indicating setting values ​​for video processing based on the scene determination result and image features of the frame; a switching speed information calculation unit that calculates, based on the similarity determination result, switching speed information indicating a switching speed of a setting value from a setting value of video processing for the input image before the scene determination result is changed to a setting value of video processing for the input image after the scene determination result is changed; a setting information determination unit that determines speed variable setting information for causing a setting value of video processing for the input image to reach the setting value based on the target setting information at a speed based on the switching speed information; A video processing device comprising:

2. the setting information determination unit determines the speed variable setting information based on the past target setting information and the past speed variable setting information before the scene determination result is changed, the target setting information after the scene determination result is changed, and the switching speed information calculated based on the similarity of images before and after the scene determination result is changed. The video processing device according to claim 1 .

3. the switching speed information calculation unit calculates a lower switching speed as the degree of similarity is higher, and calculates a higher switching speed as the degree of similarity is lower; The video processing device according to claim 1 .

4. A video processing method for a video processing device including a scene determination unit, a similarity determination unit, a setting information generation unit, a switching speed information calculation unit, and a setting information determination unit, comprising: the scene determination unit determines a scene when an input image is given; the similarity determination unit determines the similarity between frames included in the input image using image features; the setting information generation unit determines target setting information indicating setting values ​​for video processing based on the scene determination result and the image features of the frame; the switching speed information calculation unit calculates switching speed information indicating a switching speed of a setting value from a setting value of the video processing for the input image before the scene determination result is changed to a setting value of the video processing for the input image after the scene determination result is changed, based on the similarity determination result; the switching speed information calculation unit calculates switching speed information indicating a switching speed of a setting value from a setting value of the video processing for the input image before the scene determination result is changed to a setting value of the video processing for the input image after the scene determination result is changed, based on the similarity determination result; the setting information determination unit determines speed variable setting information for causing a setting value of video processing for the input image to reach the setting value based on the target setting information at a speed based on the switching speed information. Image processing method.

Images