CN110896498A - Computer airport scene special effect system - Google Patents
Computer airport scene special effect system Download PDFInfo
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- CN110896498A CN110896498A CN201910946171.6A CN201910946171A CN110896498A CN 110896498 A CN110896498 A CN 110896498A CN 201910946171 A CN201910946171 A CN 201910946171A CN 110896498 A CN110896498 A CN 110896498A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
Abstract
The invention relates to a scene special effect system based on content analysis, which comprises: the data interception equipment is positioned in the tablet personal computer and used for acquiring a video image to be played in the selected video clip to serve as an image to be processed to be output; the resolution extraction equipment is used for executing a resolution extraction action on the received image to be processed so as to obtain the real-time resolution of the image to be processed; and the dynamic segmentation equipment is used for adjusting the size of an image window for segmenting the image to be processed according to the numerical value of the real-time resolution. The scene special effect system based on content analysis is convenient to control and effective in replacement. When the scene of the video image to be played in the selected video clip is detected to be an indoor scene, the indoor background area in the high-definition image is replaced by the preset background picture, so that the interestingness of video watching is improved, the key content of the video picture is highlighted, and more visual enjoyment is provided for audiences.
Description
Technical Field
The invention relates to the field of video special effects, in particular to a computer scene special effect system.
Background
The later-stage special effect of film and television is called video special effect for short, and is characterized by that it can make digital treatment of the shooting which can not be completed in real life and shooting which is difficult to be completed or has cost of large amount of money so as to obtain the invented visual effect.
The learning of the production of the video special effect needs to know the basic application of a computer, has the will of hard learning, has certain aesthetic ability and self-learning ability, loves the movie special effect, and hopes to create movie special effect works with both hands or to engage in the movie special effect. The video special effect is mainly synthesized by rendering, combination of real shooting and three-dimensional shooting, three-dimensional special effect and movie and television later period, and the rendering solutions of various large projects are deeply studied and researched. And students can understand the synthesized skills and thinking through practice training so as to meet various production requirements of special effects of film and television and later-stage synthesis through different means. The system becomes a renderer, a three-dimensional special effect engineer, a movie and television later special effect engineer, a later synthesizer and the like required by companies and studios of various scales.
Disclosure of Invention
The invention needs to have the following key invention points:
(1) adding the maximum value and the minimum value of the selected representative image block parameters, and dividing the sum by 2 to obtain the parameters capable of processing the whole image, thereby improving the efficiency of image processing;
(2) when the scene of the video image to be played in the selected video clip is detected to be an indoor scene, the indoor background area in the high-definition image is replaced by the preset background picture, so that the interestingness of video watching is improved, the key content of the video picture is highlighted, and more visual enjoyment is provided for audiences.
According to an aspect of the present invention, there is provided a scene special effects system based on content analysis, the system including:
the data interception equipment is positioned in the tablet personal computer and used for acquiring a video image to be played in the selected video clip to serve as an image to be processed to be output;
the resolution extraction equipment is connected with the data interception equipment and is used for executing a resolution extraction action on the received image to be processed so as to obtain the real-time resolution of the image to be processed;
the dynamic segmentation equipment is connected with the resolution extraction equipment and used for receiving the real-time resolution and adjusting the size of an image window for segmenting the image to be processed according to the numerical value of the real-time resolution, wherein the smaller the numerical value of the real-time resolution is, the smaller the image window for segmenting is;
the data capture device is connected with the dynamic segmentation device and used for receiving each image area of the image to be processed and drawing a maximum parallelogram in the image to be processed so as to output an image area through which the maximum parallelogram passes as a reference image area;
the targeted computing device is connected with the data capturing device and used for distinguishing each saturation value of each reference image area in the image to be processed, and the maximum value and the minimum value of each saturation value are added and then divided by 2 to obtain a saturation value to be analyzed;
the image correction device is connected with the targeted computing device and used for performing saturation correction processing on the image to be processed by taking the saturation value to be analyzed as the integral saturation value of the image to be processed so as to obtain and output a corresponding instant correction image;
and the indoor detection equipment is connected with the image correction equipment and is used for receiving the instant correction image and judging that the instant correction image is in an indoor scene when an object of a door, a window, an office table or an office chair exists in the instant correction image.
According to another aspect of the present invention, there is also provided a content analysis-based scene special effect method, including using a content analysis-based scene special effect system as described above, for replacing an indoor background area in a high definition image with a preset background picture when detecting that a scene of a video image to be played in a selected video segment is an indoor scene.
The scene special effect system based on content analysis is convenient to control and effective in replacement. When the scene of the video image to be played in the selected video clip is detected to be an indoor scene, the indoor background area in the high-definition image is replaced by the preset background picture, so that the interestingness of video watching is improved, the key content of the video picture is highlighted, and more visual enjoyment is provided for audiences.
Detailed Description
An embodiment of the scene specific system based on content analysis of the present invention will be described in detail below.
Image recognition may be based on the main features of the image. Each image has its features such as the letter a having a tip, P having a circle, and the center of Y having an acute angle, etc. The study of eye movement in image recognition shows that the sight line is always focused on the main features of the image, namely, the places where the curvature of the contour of the image is maximum or the direction of the contour changes suddenly, and the information content of the places is maximum. And the scan path of the eye always goes from one feature to another in turn. Therefore, in the image recognition process, the perception mechanism must exclude the input redundant information and extract the key information. At the same time, there must be a mechanism in the brain that is responsible for integrating information, which can organize the information obtained in stages into a complete perceptual map.
In a human image recognition system, complex images are often recognized through different levels of information processing. For a familiar figure, it is recognized as a unit by grasping its main features, and its details are not paid attention to. Such an integral unit composed of isolated unit material is called a block, each of which is sensed simultaneously. In the recognition of the character material, people can not only form the units of strokes or components of a Chinese character into a block, but also can recognize the frequently-occurring characters or phrases into block units.
In computer vision recognition systems, image content is often described in terms of image features. In fact, computer vision based image retrieval can also be divided into three steps like a text search engine: extracting features, building an index build and querying.
At present, when people watch videos, the people generally watch original pictures of the videos, can also watch barrages and advertisements related to the videos at most, have no other contents, cannot carry out special effects and improvements on the video pictures, and cannot highlight key characters and objects on the pictures for audiences under the condition of complex video pictures.
In order to overcome the defects, the invention builds a scene special effect system based on content analysis, and can effectively solve the corresponding technical problem.
The scene effect system based on content analysis according to the embodiment of the invention comprises:
the data interception equipment is positioned in the tablet personal computer and used for acquiring a video image to be played in the selected video clip to serve as an image to be processed to be output;
the resolution extraction equipment is connected with the data interception equipment and is used for executing a resolution extraction action on the received image to be processed so as to obtain the real-time resolution of the image to be processed;
the dynamic segmentation equipment is connected with the resolution extraction equipment and used for receiving the real-time resolution and adjusting the size of an image window for segmenting the image to be processed according to the numerical value of the real-time resolution, wherein the smaller the numerical value of the real-time resolution is, the smaller the image window for segmenting is;
the data capture device is connected with the dynamic segmentation device and used for receiving each image area of the image to be processed and drawing a maximum parallelogram in the image to be processed so as to output an image area through which the maximum parallelogram passes as a reference image area;
the targeted computing device is connected with the data capturing device and used for distinguishing each saturation value of each reference image area in the image to be processed, and the maximum value and the minimum value of each saturation value are added and then divided by 2 to obtain a saturation value to be analyzed;
the image correction device is connected with the targeted computing device and used for performing saturation correction processing on the image to be processed by taking the saturation value to be analyzed as the integral saturation value of the image to be processed so as to obtain and output a corresponding instant correction image;
the indoor detection equipment is connected with the image correction equipment and used for receiving the instant correction image and judging that the instant correction image is in an indoor scene when an object of a door, a window, an office table or an office chair exists in the instant correction image;
in the indoor detection equipment, detecting whether an object of a door, a window, a desk or an office chair exists in the instant correction image based on the geometric shape of the door, the window, the desk or the office chair;
the content modification device is connected with the indoor detection device and used for replacing an indoor background area in the instant correction image by adopting a preset background picture to obtain a replaced image so as to replace the instant correction image for playing of a tablet computer when the instant correction image is judged to be in an indoor scene;
and the content modifying equipment performs background stripping on the instant correction image to obtain a corresponding indoor background area.
Next, the detailed structure of the scene effect system based on content analysis according to the present invention will be further described.
In the scene special effect system based on content analysis:
the image correction equipment comprises parameter receiving sub-equipment, instant processing sub-equipment and image output sub-equipment;
the parameter receiving sub-device is used for receiving the saturation value to be analyzed, and the immediate processing sub-device is used for performing saturation processing on the image to be processed by taking the saturation value to be analyzed as the integral saturation value of the image to be processed.
In the scene special effect system based on content analysis:
the image output sub-equipment is connected with the instant processing sub-equipment and is used for obtaining and outputting a corresponding instant correction image;
the dynamic segmentation equipment also performs segmentation on the image to be processed according to the image window to obtain each image area;
wherein performing saturation correction processing on the image to be processed by taking the saturation value to be analyzed as the overall saturation value of the image to be processed comprises: executing saturation correction processing on the corresponding intensity of the image to be processed based on the difference value of the saturation value to be analyzed and a preset saturation threshold value;
wherein the greater the difference, the higher the corresponding intensity of the saturation correction process performed on the image to be processed.
The scene special effect system based on content analysis may further include:
and the high-pass filtering sharpening device is connected with the data interception device and is used for receiving the image to be processed and executing high-pass filtering sharpening processing on the image to be processed so as to obtain and output a corresponding high-pass filtering sharpened image.
The scene special effect system based on content analysis may further include:
and the geometric correction device is connected with the high-pass filtering sharpening device and is used for receiving the high-pass filtering sharpened image and executing geometric correction processing on the high-pass filtering sharpened image so as to obtain and output a corresponding instant correction image.
The scene special effect system based on content analysis may further include:
and the content extraction device is connected with the geometric correction device and is used for receiving the instant correction image and outputting an image area with an object in the instant correction image as an object sub-image, wherein one or more image areas with the object in the instant correction image are provided.
The scene special effect system based on content analysis may further include:
the spatial domain sharpening device is connected with the content extraction device and is used for executing the following actions on each object sub-image in the instant correction image: and performing image sharpening processing based on a spatial differentiation method on each object sub-image to obtain a corresponding sharpened sub-image.
The scene special effect system based on content analysis may further include:
and the signal combination device is respectively connected with the content extraction device and the spatial sharpening device and is used for receiving one or more sharpening sub-images respectively corresponding to the one or more object sub-images and receiving image areas except the one or more object sub-images in the instant correction image, and combining the one or more sharpening sub-images respectively corresponding to the one or more object sub-images and the image areas except the one or more object sub-images in the instant correction image to obtain and output a corresponding data combination image.
The scene special effect system based on content analysis may further include:
the histogram equalization equipment is respectively connected with the signal combination equipment of the resolution extraction equipment and is used for receiving the data combination image, executing histogram equalization processing on the data combination image to obtain a corresponding equalization processing image and replacing the image to be processed to send the equalization processing image to the resolution extraction equipment;
the signal combination equipment consists of a sub-image receiving unit, a sub-image combination unit and a sub-image output unit;
wherein, in the signal combining apparatus, the sub-image combining unit is connected to the sub-image receiving unit and the sub-image output unit, respectively.
Meanwhile, in order to overcome the defects, the invention also builds a scene special effect method based on content analysis, and the method comprises the step of using the scene special effect system based on content analysis to replace an indoor background area in the high-definition image by adopting a preset background picture when detecting that the scene of the video image to be played in the selected video clip is an indoor scene.
In addition, image filtering, namely, suppressing the noise of the target image under the condition of keeping the detail features of the image as much as possible, is an indispensable operation in image preprocessing, and the effectiveness and reliability of subsequent image processing and analysis are directly affected by the quality of the processing effect.
Due to the imperfections of the imaging system, the transmission medium, and the recording device, the digital images are often contaminated by various noises during the formation, transmission, and recording processes thereof. In addition, noise may also be introduced into the resulting image at some point in the image processing when the input image object is not as expected. These noises often appear as an isolated pixel or block of pixels on the image that causes a strong visual effect. In general, the noise signal is not correlated with the object to be studied-it appears in the form of useless information, disturbing the observable information of the image. For digital image signals, the noise table is more or less extreme values, and the extreme values act on the real gray values of image pixels through addition and subtraction to cause bright and dark point interference on the image, so that the image quality is greatly reduced, and the follow-up work of image restoration, segmentation, feature extraction, image identification and the like is influenced. Two basic issues must be considered to construct an effective noise suppression filter: the noise in the target and the background can be effectively removed; meanwhile, the shape, the size and the specific geometric and topological structure characteristics of the image target can be well protected.
One of the commonly used image filtering modes is a non-linear filter, generally speaking, when the signal spectrum and the noise spectrum are mixed or when the signal contains non-superimposed noise, such as noise caused by system nonlinearity or the presence of non-gaussian noise, etc.), the conventional linear filtering techniques, such as fourier transform, while filtering out noise, always blur the image details (such as edges, etc.) in some way, thereby causing the positioning accuracy of the image linear features and the extractability of the features to be reduced. The nonlinear filter is based on a nonlinear mapping relation of an input signal, a specific noise can be mapped to be zero approximately, the main characteristic of the signal is reserved, and therefore the nonlinear filter can overcome the defects of the linear filter to a certain extent.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Although the present invention has been described with reference to the above embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims of the present application.
Claims (10)
1. A scene special effects system based on content analysis, the system comprising:
the data interception equipment is positioned in the tablet personal computer and used for acquiring a video image to be played in the selected video clip to serve as an image to be processed to be output;
the resolution extraction equipment is connected with the data interception equipment and is used for executing a resolution extraction action on the received image to be processed so as to obtain the real-time resolution of the image to be processed;
the dynamic segmentation equipment is connected with the resolution extraction equipment and used for receiving the real-time resolution and adjusting the size of an image window for segmenting the image to be processed according to the numerical value of the real-time resolution, wherein the smaller the numerical value of the real-time resolution is, the smaller the image window for segmenting is;
the data capture device is connected with the dynamic segmentation device and used for receiving each image area of the image to be processed and drawing a maximum parallelogram in the image to be processed so as to output an image area through which the maximum parallelogram passes as a reference image area;
the targeted computing device is connected with the data capturing device and used for distinguishing each saturation value of each reference image area in the image to be processed, and the maximum value and the minimum value of each saturation value are added and then divided by 2 to obtain a saturation value to be analyzed;
the image correction device is connected with the targeted computing device and used for performing saturation correction processing on the image to be processed by taking the saturation value to be analyzed as the integral saturation value of the image to be processed so as to obtain and output a corresponding instant correction image;
the indoor detection equipment is connected with the image correction equipment and used for receiving the instant correction image and judging that the instant correction image is in an indoor scene when an object of a door, a window, an office table or an office chair exists in the instant correction image;
in the indoor detection equipment, detecting whether an object of a door, a window, a desk or an office chair exists in the instant correction image based on the geometric shape of the door, the window, the desk or the office chair;
the content modification device is connected with the indoor detection device and used for replacing an indoor background area in the instant correction image by adopting a preset background picture to obtain a replaced image so as to replace the instant correction image for playing of a tablet computer when the instant correction image is judged to be in an indoor scene;
and the content modifying equipment performs background stripping on the instant correction image to obtain a corresponding indoor background area.
2. The content analysis-based scene special effects system of claim 1, wherein:
the image correction equipment comprises parameter receiving sub-equipment, instant processing sub-equipment and image output sub-equipment;
the parameter receiving sub-device is used for receiving the saturation value to be analyzed, and the immediate processing sub-device is used for performing saturation processing on the image to be processed by taking the saturation value to be analyzed as the integral saturation value of the image to be processed.
3. The content analysis-based scene special effects system of claim 2, wherein:
the image output sub-equipment is connected with the instant processing sub-equipment and is used for obtaining and outputting a corresponding instant correction image;
the dynamic segmentation equipment also performs segmentation on the image to be processed according to the image window to obtain each image area;
wherein performing saturation correction processing on the image to be processed by taking the saturation value to be analyzed as the overall saturation value of the image to be processed comprises: executing saturation correction processing on the corresponding intensity of the image to be processed based on the difference value of the saturation value to be analyzed and a preset saturation threshold value;
wherein the greater the difference, the higher the corresponding intensity of the saturation correction process performed on the image to be processed.
4. The content analysis based scene specific system of claim 3, further comprising:
and the high-pass filtering sharpening device is connected with the data interception device and is used for receiving the image to be processed and executing high-pass filtering sharpening processing on the image to be processed so as to obtain and output a corresponding high-pass filtering sharpened image.
5. The content analysis based scene specific system of claim 4, wherein the system further comprises:
and the geometric correction device is connected with the high-pass filtering sharpening device and is used for receiving the high-pass filtering sharpened image and executing geometric correction processing on the high-pass filtering sharpened image so as to obtain and output a corresponding instant correction image.
6. The content analysis based scene specific system of claim 5, further comprising:
and the content extraction device is connected with the geometric correction device and is used for receiving the instant correction image and outputting an image area with an object in the instant correction image as an object sub-image, wherein one or more image areas with the object in the instant correction image are provided.
7. The content analysis based scene specific system of claim 6, further comprising:
the spatial domain sharpening device is connected with the content extraction device and is used for executing the following actions on each object sub-image in the instant correction image: and performing image sharpening processing based on a spatial differentiation method on each object sub-image to obtain a corresponding sharpened sub-image.
8. The content analysis based scene specific system of claim 7, further comprising:
and the signal combination device is respectively connected with the content extraction device and the spatial sharpening device and is used for receiving one or more sharpening sub-images respectively corresponding to the one or more object sub-images and receiving image areas except the one or more object sub-images in the instant correction image, and combining the one or more sharpening sub-images respectively corresponding to the one or more object sub-images and the image areas except the one or more object sub-images in the instant correction image to obtain and output a corresponding data combination image.
9. The content analysis based scene specific system of claim 8, further comprising:
the histogram equalization equipment is respectively connected with the signal combination equipment of the resolution extraction equipment and is used for receiving the data combination image, executing histogram equalization processing on the data combination image to obtain a corresponding equalization processing image and replacing the image to be processed to send the equalization processing image to the resolution extraction equipment;
the signal combination equipment consists of a sub-image receiving unit, a sub-image combination unit and a sub-image output unit;
wherein, in the signal combining apparatus, the sub-image combining unit is connected to the sub-image receiving unit and the sub-image output unit, respectively.
10. A method for scene effect based on content analysis, the method comprising providing a scene effect system based on content analysis according to any one of claims 1 to 9, for replacing an indoor background area in a high definition image with a preset background picture when detecting that a scene of a video image to be played in a selected video segment is an indoor scene.
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| CN201910946171.6A CN110896498A (en) | 2019-10-03 | 2019-10-03 | Computer airport scene special effect system |
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