CN110392216B - Real-time judgment system of light change - Google Patents
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Abstract
本发明涉及一种光线变化量即时判断系统，包括：光线传感设备，设置在幕布的一侧，用于感应幕布上当前播放图像的亮度，以获得并输出播放光线亮度，所述幕布用于为图像播放提供介质；环境检测设备，设置在远离幕布的一侧，用于对远离幕布的环境光线亮度进行感应，以获得并输出环境光线亮度；变化量提取设备，分别与所述光线传感设备和所述环境检测设备连接，用于接收所述播放光线亮度和所述环境光线亮度，将所述播放光线亮度的幅值与所述环境光线亮度的幅值作差后取绝对值以获得相应的光线变化量。通过本发明，实现了演出内容的自动断代。
The invention relates to a system for judging the amount of light change in real time. Provide a medium for image playback; an environment detection device is arranged on the side away from the curtain, and is used to sense the brightness of the ambient light far away from the curtain, so as to obtain and output the brightness of the ambient light; the variation extraction device is respectively connected with the light sensor The device is connected to the environment detection device, and is used to receive the brightness of the playing light and the brightness of the ambient light, and take the absolute value after the difference between the amplitude of the brightness of the playing light and the amplitude of the brightness of the ambient light to obtain The corresponding amount of light change. Through the present invention, the automatic generation of performance content is realized.
Description
Technical Field
The invention relates to the field of computers, in particular to a light variation instant judgment system.
Background
The light brightness detection can measure brightness, chromaticity, color temperature cielab, cieluv, chromatic aberration and the like, and 4 measurement angles can be switched. The device can be applied to the measurement occasions of low-brightness fields requiring a small-range measurement angle (0.1 DEG/0.2 DEG), and an extension line can be used for separating the host machine and the sensor for measurement if the device is used for remote measurement. The light intensity sensing instrument may be used with an additional keyboard (optional) for a variety of functions, including inputting color coefficients and intensity deviations.
In addition, the system can also be used for detecting, storing, analyzing and printing brightness data in a computer, and the light brightness detection is widely applied to the fields of lighting engineering, movies, televisions, buildings and the like.
Disclosure of Invention
In order to solve the technical problem, the invention provides a system for instantly judging the light variation.
The invention has at least the following two important points:
(1) the character age corresponding to the character with the largest occupied area in the image is determined as the scene age corresponding to the currently played image by using the characteristic that the moment with the largest light variation is the moment with the highest character complexity, so that the age detection effectiveness is improved, and the operation amount of image processing is saved;
(2) respectively identifying impulse interference and pulsation interference in an image to respectively obtain each impulse interference signal in the image and each pulsation interference signal in the image, and comparing the amplitudes of the interference signals to select a filtering mechanism suitable for image content for the image so as to prevent the lack of pertinence of image filtering.
According to an aspect of the present invention, there is provided a system for instantly determining a variation in light, the system comprising:
the screen is used for providing media for image playing; the environment detection equipment is arranged on one side far away from the curtain and used for sensing the ambient light brightness far away from the curtain to obtain and output the ambient light brightness.
More specifically, the system for instantly determining the amount of light variation further includes:
the variable quantity extraction equipment is respectively connected with the light sensing equipment and the environment detection equipment and is used for receiving the playing light brightness and the environment light brightness, and taking an absolute value after the amplitude of the playing light brightness is different from the amplitude of the environment light brightness so as to obtain corresponding light variable quantity; the state control equipment faces the curtain sets up, with the change extraction equipment is connected, is used for receiving the light change volume, and when the light change volume exceeded the change threshold value, get into the image acquisition state, with it is right the curtain carries out data acquisition in order to obtain the curtain image that corresponds, and state control equipment is in when the light change volume did not exceed the change threshold value, get into the out-of-service condition.
More specifically, the system for instantly determining the amount of light variation further includes:
and the image analysis equipment is connected with the state control equipment and is used for receiving the curtain image and respectively identifying the pulse interference and the pulse interference in the curtain image so as to respectively obtain each pulse interference signal in the curtain image and each pulse interference signal in the curtain image.
More specifically, the system for instantly determining the amount of light variation further includes:
the reference value extraction device is connected with the image analysis device and is used for receiving each pulse interference signal in the curtain image and each pulse interference signal in the curtain image, determining the maximum value of each amplitude value of each pulse interference signal in the curtain image to be used as a pulse interference reference value, and determining the maximum value of each amplitude value of each pulse interference signal in the curtain image to be used as a pulse interference reference value; the switching control equipment is connected with the reference value extraction equipment and used for sending out a first trigger signal when the pulse interference reference value is greater than or equal to the pulse interference reference value and sending out a second trigger signal when the pulse interference reference value is smaller than the pulse interference reference value; the pulse removing device is respectively connected with the image analysis device and the switching control device and is used for starting the following processing of each pixel point in the curtain image when receiving the first trigger signal: taking each pixel point in the curtain image as a processing pixel point, determining the area of a filtering window for executing median filtering based on the pulse interference reference value, and performing filtering processing on the pixel value of the processing pixel point by adopting the filtering window; the pulse removing equipment is further used for outputting a corresponding first filtering image based on a filtering processing result of the pixel value of each pixel point in the curtain image; the pulsation removing device is respectively connected with the image analyzing device and the switching control device and is used for starting weighted mean filtering processing on the curtain image when receiving the second trigger signal so as to obtain and output a corresponding second filtered image; the image collecting device is respectively connected with the pulse removing device and is used for receiving the first filtering image or the second filtering image and outputting the first filtering image or the second filtering image as a collected image corresponding to the curtain image; a power supply device connected to the switching control device, the pulse removing device, and the pulsation removing device, respectively; the image blocking device is connected with the image collecting device, and is used for receiving the collected image and carrying out person identification on the collected image so as to obtain one or more person blocks, wherein the outline of each person block corresponds to the outline of a person object included in the person block; the clothing collecting device is connected with the image blocking device and used for receiving the one or more character blocks, identifying the clothing years of each character block based on each preset reference clothing pattern to obtain the corresponding character years, and determining the character year corresponding to the character block with the largest area in the one or more character blocks as the scene year corresponding to the currently played image on the curtain; wherein the power supply device controls the pulse removal device to enter an operation mode and controls the pulsation removal device to enter a sleep mode when receiving the first trigger signal.
More specifically, in the light variation amount immediate determination system: the power supply device controls the pulsation removing device to enter an operation mode and controls the pulsation removing device to enter a sleep mode when receiving the second trigger signal.
More specifically, in the light variation amount immediate determination system: in the pulse removing apparatus, the larger the pulse interference reference value is, the larger the area of the filter window determined to perform median filtering is.
More specifically, in the light variation amount immediate determination system: in the state control device, the power consumption amount in the image capturing state is larger than the power consumption amount in the shutdown state.
More specifically, in the light variation amount immediate determination system: in the state control apparatus, the variation threshold is a positive value.
More specifically, in the light variation amount immediate determination system: the variable quantity draws equipment to include near-end bluetooth interface, light sensing equipment includes distal end bluetooth interface, near-end bluetooth interface pass through two-way bluetooth communication link with distal end bluetooth interface connection.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram illustrating a state control device of a system for instantly determining a variation in light according to an embodiment of the present invention.
Detailed Description
An embodiment of the light variation amount immediate determination system of the present invention will be described in detail below with reference to the accompanying drawings.
After determining the flux of the object to be measured, the flux is typically converted to instrumental luminosity. The measurement is then calibrated in some way. Which calibration method is used depends in part on what type of brightness measurement is being made. Typically, observations are processed in terms of relative or differential brightness measurements. Relative brightness measurements are used to measure relative staring between multiple objects, etc.
Absolute brightness measurement is used to measure the brightness of an object on a standard photometric system, etc.; these measurements can be compared to other absolute brightness measurements obtained by different telescopes or instruments. Differential brightness measurements are used to measure the difference in brightness between two objects. In most cases, differential luma can be made to the highest precision, while absolute luma is the most difficult to make to high precision.
In order to overcome the defects, the invention builds a light variation instant judgment system, and can effectively solve the corresponding technical problem.
Fig. 1 is a schematic structural diagram illustrating a state control device of a system for instantly determining a variation in light according to an embodiment of the present invention.
The system for instantly judging the variation of light according to the embodiment of the invention comprises:
the screen is used for providing media for image playing;
the environment detection equipment is arranged on one side far away from the curtain and used for sensing the ambient light brightness far away from the curtain to obtain and output the ambient light brightness.
Next, the specific structure of the light variation real-time determination system of the present invention will be further described.
In the system for instantly judging the variation of light, the method further comprises:
the variable quantity extraction equipment is respectively connected with the light sensing equipment and the environment detection equipment and is used for receiving the playing light brightness and the environment light brightness, and taking an absolute value after the amplitude of the playing light brightness is different from the amplitude of the environment light brightness so as to obtain corresponding light variable quantity;
the state control equipment faces the curtain sets up, with the change extraction equipment is connected, is used for receiving the light change volume, and when the light change volume exceeded the change threshold value, get into the image acquisition state, with it is right the curtain carries out data acquisition in order to obtain the curtain image that corresponds, and state control equipment is in when the light change volume did not exceed the change threshold value, get into the out-of-service condition.
In the system for instantly judging the variation of light, the method further comprises:
and the image analysis equipment is connected with the state control equipment and is used for receiving the curtain image and respectively identifying the pulse interference and the pulse interference in the curtain image so as to respectively obtain each pulse interference signal in the curtain image and each pulse interference signal in the curtain image.
In the system for instantly judging the variation of light, the method further comprises:
the reference value extraction device is connected with the image analysis device and is used for receiving each pulse interference signal in the curtain image and each pulse interference signal in the curtain image, determining the maximum value of each amplitude value of each pulse interference signal in the curtain image to be used as a pulse interference reference value, and determining the maximum value of each amplitude value of each pulse interference signal in the curtain image to be used as a pulse interference reference value;
the switching control equipment is connected with the reference value extraction equipment and used for sending out a first trigger signal when the pulse interference reference value is greater than or equal to the pulse interference reference value and sending out a second trigger signal when the pulse interference reference value is smaller than the pulse interference reference value;
the pulse removing device is respectively connected with the image analysis device and the switching control device and is used for starting the following processing of each pixel point in the curtain image when receiving the first trigger signal: taking each pixel point in the curtain image as a processing pixel point, determining the area of a filtering window for executing median filtering based on the pulse interference reference value, and performing filtering processing on the pixel value of the processing pixel point by adopting the filtering window; the pulse removing equipment is further used for outputting a corresponding first filtering image based on a filtering processing result of the pixel value of each pixel point in the curtain image;
the pulsation removing device is respectively connected with the image analyzing device and the switching control device and is used for starting weighted mean filtering processing on the curtain image when receiving the second trigger signal so as to obtain and output a corresponding second filtered image;
the image collecting device is respectively connected with the pulse removing device and is used for receiving the first filtering image or the second filtering image and outputting the first filtering image or the second filtering image as a collected image corresponding to the curtain image;
a power supply device connected to the switching control device, the pulse removing device, and the pulsation removing device, respectively;
the image blocking device is connected with the image collecting device, and is used for receiving the collected image and carrying out person identification on the collected image so as to obtain one or more person blocks, wherein the outline of each person block corresponds to the outline of a person object included in the person block;
the clothing collecting device is connected with the image blocking device and used for receiving the one or more character blocks, identifying the clothing years of each character block based on each preset reference clothing pattern to obtain the corresponding character years, and determining the character year corresponding to the character block with the largest area in the one or more character blocks as the scene year corresponding to the currently played image on the curtain;
wherein the power supply device controls the pulse removal device to enter an operation mode and controls the pulsation removal device to enter a sleep mode when receiving the first trigger signal.
In the light variation instant judging system: the power supply device controls the pulsation removing device to enter an operation mode and controls the pulsation removing device to enter a sleep mode when receiving the second trigger signal.
In the light variation instant judging system: in the pulse removing apparatus, the larger the pulse interference reference value is, the larger the area of the filter window determined to perform median filtering is.
In the light variation instant judging system: in the state control device, the power consumption amount in the image capturing state is larger than the power consumption amount in the shutdown state.
In the light variation instant judging system: in the state control apparatus, the variation threshold is a positive value.
In the light variation instant judging system: the variable quantity draws equipment to include near-end bluetooth interface, light sensing equipment includes distal end bluetooth interface, near-end bluetooth interface pass through two-way bluetooth communication link with distal end bluetooth interface connection.
In addition, in the light variation instant judging system: in the median filtering adopted by the pulse removing equipment, namely, the noise of the target image is suppressed under the condition of keeping the detail characteristics of the image as much as possible, the method is an indispensable operation in image preprocessing, and the effectiveness and the reliability of subsequent image processing and analysis are directly influenced 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.
By adopting the light variation instant judgment system, the character age corresponding to the character with the largest occupied area in the image is determined as the scene age corresponding to the currently played image by utilizing the characteristic that the moment with the largest light variation is the moment with the highest character complexity, so that the age detection effectiveness is improved, and the image processing calculation amount is saved; the method is particularly characterized in that pulse interference and pulse interference in an image are respectively identified so as to respectively obtain each pulse interference signal in the image and each pulse interference signal in the image, the amplitudes of the interference signals are compared to select a filtering mechanism which is suitable for the image content for the image, so that the problem of lack of pertinence in image filtering is avoided, and the technical problem is solved.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
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| "三维人脸检测与识别技术研究";蔡宇;《中国博士学位论文全文数据库（电子期刊）》;20140415;全文 * |
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| Publication number | Publication date |
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| CN109309797A (en) | 2019-02-05 |
| CN109309797B (en) | 2019-07-09 |
| CN110392216A (en) | 2019-10-29 |
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