JP2007122905A - Illumination device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to change variously illumination light according to a situation like a natural light by adapting to a case, for example, in which coloring or the like of illumination is changed variously like natural light according to a situation in a room regarding an illumination device. <P>SOLUTION: By mapping and projecting images of contents on an object of three-dimensional space, elements to define this three-dimensional space are changed by a sensor output. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an illuminating device, and can be applied, for example, when the color of illumination is variously changed according to indoor conditions. The present invention maps and projects a video of content onto an object in a three-dimensional space, and changes the elements defining this three-dimensional space by sensor output, so that illumination light can be used according to the situation like natural light. Can be changed in various ways.

  Conventionally, lighting devices are used not only to brighten indoors and the like, but also to create an atmosphere of space, such as indirect lighting.

  With regard to such illumination, for example, Japanese Patent Application Laid-Open No. 2005-251508 proposes a method for increasing the spread of an image by changing the illumination in conjunction with the image displayed on the screen.

  By the way, the brightness, color, direction, and the like of natural light such as sunlight and light from candle flames vary depending on time of day, atmospheric conditions, and the like. A human can perceive, for example, the flickering of the candle flame by such changes in brightness, color, direction, etc., and can grasp that the wind is blowing to such an extent that the flame of the candle flickers. Even when the specific situation of the place cannot be grasped in this way, the situation of the place can be grasped vaguely.

Thus, even in the illumination light from the illumination device, if the illumination light can be variously changed according to the situation like natural light, it is considered that the field of use as the illumination device can be further expanded.
JP 2005-251508 A

  The present invention has been made in view of the above points, and an object of the present invention is to propose an illuminating device that can change illumination light in various ways according to the situation, such as natural light.

  In order to solve such a problem, the invention of claim 1 is directed to an arithmetic processing unit that processes video content output from a source and outputs video data, and spatially modulates and emits light from a primary light source by the video data. When applied to a lighting device having a light modulation unit, the arithmetic processing unit maps the video content video to an object in a virtual three-dimensional space to generate the video data, and the three-dimensional space At least one of the plurality of elements that define is changed by the output signal of the sensor.

  According to the configuration of the first aspect, there is provided an arithmetic processing unit that processes video content output from a source and outputs video data, and a light modulation unit that spatially modulates and emits light from a primary light source using the video data. When applied to a lighting device, the arithmetic processing unit generates a plurality of elements that define the three-dimensional space by mapping the video content video to an object in a virtual three-dimensional space and generating the video data. If at least one of the elements is changed according to the output signal of the sensor, the illumination light emitted by the light modulation section changes variously like natural light depending on the situation detected by the sensor. Thus, it is possible to provide an illuminating device that can change illumination light in various ways according to the situation like natural light.

  According to the present invention, illumination light can be variously changed according to a situation like natural light.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

(1) Configuration of Example FIG. 2 is a schematic diagram illustrating an illumination device according to an example of the present invention. In the lighting device 1, the source 2 is various video devices that output video data DV1 based on a moving image or a still image based on video content, and includes, for example, a video tape recorder and a DVD (Digital Versatile Disk) player.

  The microphone 3 is a sensor that detects the situation of the place where the microphone 3 is installed, and outputs an audio signal S 1 to the computer 4. In addition, for the detection of the situation of the installed place, for example, various sensors for detecting various elements that can be perceived by human senses such as light, temperature, humidity, wind, smell, etc. Various sensors for detecting various elements that cannot be perceived can be widely applied, and a plurality of types of sensors may be used. Incidentally, elements that cannot be perceived by such human senses include, for example, light outside the visible light range of the human eye, such as ultraviolet rays and infrared rays, and sound outside the human audible range.

  The projector 5 drives an image display element such as a liquid crystal display panel by the video data generated by the computer 4, and emits the light from the built-in primary light source by spatially modulating the image by the video data generated by the computer 4. . The illumination device 1 uses the light emitted from the projector 5 as indirect illumination light, whereby the projector 5 emits illumination light toward various parts of the room such as the floor, wall, ceiling, etc. Arranged to be able to produce.

  The computer 4 is a computer having an interface (IF) 6 related to the source 2, the microphone 3, and the projector 5, and secures a work area in a random access memory (RAM) 8 according to recording in a read-only memory (ROM) 7. A central processing unit (CPU) 10 executes a processing program recorded in a device (HDD) 9. As a result, the computer 4 changes the image of the video content obtained from the source 2 according to the situation of the place where the microphone 3 detected by the microphone 3 is installed, and outputs the resulting video data to the projector 5. To do. In this way, the processing program may be provided by being installed in advance in the computer 4, or alternatively may be provided by being recorded on various recording media such as an optical disk, a magnetic disk, or a memory card. Alternatively, it may be provided by downloading via a network such as the Internet.

  The computer 4 arranges an object in a virtual three-dimensional space in a series of processes by the processing program, maps the video content video from the source 2 to the object, and changes the situation of the place where the microphone 3 is installed. In response, the elements defining this three-dimensional space are changed, thereby changing the image obtained from the source 2. Accordingly, the computer 4 gives a sense of depth to the indirect illumination so that the user does not realize that the indirect illumination by the projector 5 is due to the video content.

  Accordingly, in this embodiment, the computer 4 constitutes an arithmetic processing unit that processes video content output from the source 2 and outputs video data, and the projector 5 spatially transmits light from the primary light source by the video data. A light modulation unit that modulates and emits light is configured.

  FIG. 1 is a flowchart showing the processing procedure of the computer 4 related to the execution of this processing program. The computer 4 starts this processing procedure when the power is turned on, moves from step SP1 to step SP2, and starts the processing program here. In the following step SP3, it is determined whether or not the user has instructed the end of the process. If a negative result is obtained here, the process proceeds to step SP4.

  Here, the computer 4 acquires the video data DV1 output from the source 2 for one frame, and in the subsequent step SP5, acquires the audio signal S1 obtained from the microphone 3 for the period corresponding to one frame of the video data. To do. Subsequently, in step SP6, the computer 4 analyzes the waveform of the sound data, and in step SP7 following the analysis result, detects a feature amount indicating the state of the place where the microphone 3 as a sensor is disposed.

In this embodiment, the computer 4 applies full-wave rectification processing and envelope detection processing to the waveform analysis processing, and sets the envelope detection result E of the audio signal S1 as a feature amount. Thereby, the computer 4 detects the feature amount based on the signal level of the audio signal S1. Specifically, the computer 4 inputs the audio signal S1 at a sampling frequency of 44.1 [kHz] and, as shown in FIG. 3, the envelope detection result En _-1 based on the immediately preceding sampling value for each sampling. more when the amplitude value S _n is large, sets the amplitude value S _n in an envelope detection result E _n by the sampling value (E _n = S _n). Also contrary to this, when the amplitude value S _n from an envelope detection result E _n-1 by the sampling value immediately before is small, an envelope detection result by the sampling value immediately before E _n-1 the constant attenuation count A attenuates by, set in this an envelope detection result by the sampling value _{E n (E n = a (} E n-1 -S n) + S n), these full-wave rectification, a an envelope detection process Execute. In this embodiment, the attenuation coefficient A is set to 0.995.

  Note that instead of setting such an envelope detection result E as a feature amount, the envelope detection result E may be further analyzed and the feature amount may be set based on the analysis result. Note that such processing may be performed when a change amount is detected from the envelope detection result E and set as a feature amount. In addition, the processing related to the detection of the feature amount based on the signal level of the audio signal obtained by the microphone 3 is performed in place of or in addition to such processing of full-wave rectification and envelope detection. You may make it perform by detection of a signal level, detection of the signal level in a specific frequency band, etc. Further, instead of or in addition to the detection of the feature amount based on the signal level, the detection may be performed by the spread of the frequency spectrum, the change in the frequency of the lowest order spectrum, or the like.

  In addition to such a microphone, when detecting a feature value by light, the intensity, color temperature, etc. of the light detected by the sensor can be processed and set as the feature value in the same way as by voice, Alternatively, in the case of sound, humidity, odor, etc., the output signal from the corresponding sensor can be processed and set as a feature value in the same manner as in the case of sound. When multiple sensors of the same type are used, the distribution of sound, light, temperature, humidity, wind, odor, etc. is detected from various detection results detected by these sensors, and this distribution or distribution The feature amount may be set based on the change in the. When multiple sensors of the same type are used, when multiple types of sensors are used, or when feature amounts are detected by a combination of various detection methods, the feature amounts detected by each sensor and the various detection methods The final feature value may be obtained by statistical processing of the detected feature value. Such statistical processing may be weighted average processing, for example.

  Further, instead of the process of finally detecting one feature value, a different sensor output and feature value detection process is applied to each element defining a three-dimensional space to be described later. The amount may be obtained.

  When the feature quantity indicating the situation of the place where the sensor is arranged in this way is detected, the computer 4 moves to step SP8, and calculates the parameter value of the element defining the virtual three-dimensional space from this feature quantity. Here, the virtual three-dimensional space is a three-dimensional space formed by the execution of the processing program in the computer 4. The three-dimensional object 16 and the viewpoint 15 are set in a coordinate system (world coordinate system) having one origin. It is a general one in which a virtual camera is arranged. Thus, the elements defining the three-dimensional space correspond to the number of objects 16, the coordinates of the viewpoint 15 and the object 16, the shape, size, transparency, and the like of the object 16. In addition to these, a light source may be arranged, and the coordinates of the light source, the intensity of light from the light source, the color, and the like may be added to the elements.

  In this embodiment, the computer 4 sets a parameter value for setting the transparency of the object 16 according to the feature amount calculated in step SP7, and as a result, the signal level S1 of the audio signal acquired by the microphone 3 increases. , Increase the transparency of the object 16. Specifically, the computer 4 changes the parameter value for setting the transparency from the reference parameter value in accordance with the amount of displacement of the feature quantity with respect to the reference value, and thereby the parameter value for setting the transparency of the object 16 is used as the feature quantity. Set accordingly.

  Subsequently, the computer 4 proceeds to step SP10, where the parameter values of the remaining elements defining this virtual three-dimensional space are calculated.

  Here, in this embodiment, the computer 4 sequentially arranges a plurality of objects 16 having an organic shape having a complicated curved surface in this three-dimensional space, and the viewpoint 15 passes through the plurality of objects 16 sequentially. Calculate the parameter values for the remaining elements as they move.

  Subsequently, the computer 4 proceeds to step SP10 and executes a drawing process. As a result, as shown in FIG. 5, a plurality of objects 16 formed in a virtual three-dimensional space are respectively obtained for one frame acquired in step SP4. An image viewed from the viewpoint 15 is generated by pasting the video. Here, the pasting of the video onto the object 16 is performed by using a texture mapping technique, and in this embodiment, it is executed using the texture coordinates set by the user as an initial value. Note that the texture coordinates may be set according to the feature amount detected in step SP7. The texture coordinate value may be automatically calculated by applying a technique such as projection mapping or sphere mapping.

  When the image for one frame is drawn in this way, the computer 4 outputs the drawn image for one frame in step SP11, and returns to step SP3. Thereby, the computer 4 repeats this processing procedure for each frame, and when a positive result is obtained in step SP3, the computer 4 moves from step SP3 to step SP12 and ends this processing procedure.

  In this embodiment, the computer 4 executes a series of processes using animation rendering software related to three-dimensional graphics. As a result, the coordinates of the object 16 and the coordinates of the viewpoint 15 are shown in FIG. By executing the processing procedure for each frame, the computer 4 sequentially generates the parameter values relating to the remaining elements described above for step SP9 based on the initial value set by the user.

(2) Operation of Example In the above configuration, in the lighting device 1, a virtual three-dimensional space in which the viewpoint 15 and the object 16 are arranged is formed by arithmetic processing in the computer 4 (FIGS. 2 and 4). The video of the video content output from the source 2 is mapped to the object 16 in the three-dimensional space. Also, video data based on this three-dimensional space image is generated and projected by the projector 5, thereby providing illumination light by indirect illumination. In the lighting device 1, at least one element that defines the three-dimensional space is changed by an output signal from the microphone 3 that constitutes the sensor, so that the situation of the place where the microphone 3 is arranged can be changed like natural light. Accordingly, various changes are given to the illumination light.

  That is, if the content video is mapped and projected onto an object in a three-dimensional space in this way, the indirect illumination light is not realized by the video content, and a sense of depth is further provided. In this way, illumination light can be provided. In this case, the illumination light can be changed variously by changing the video content.

  At this time, if the elements defining the three-dimensional space are changed by the sensor output, for example, it is possible to produce an atmosphere where the flame of the candle is swaying, so that the specific situation of the place cannot be grasped. , You can let the user grasp the situation of the place vaguely. Thereby, illumination light can be changed variously according to the condition of the place where the microphone 3 is arrange | positioned like natural light.

  Also, by applying an image of water surface to the video content and executing an animation that performs a deformation that causes ripples to spread over the three-dimensional object, for example, the start timing of this animation is determined by the peak value of the audio signal input from the outside. Once determined, it is possible to generate an image in which ripples spread with the input of a loud sound as a trigger. If a light source is installed in a three-dimensional space and the light quantity of this light source is controlled by sensor output, illumination light can be generated so that the light quantity changes according to the outdoor brightness. In addition, if the elements in the three-dimensional space are changed using feature amounts from a plurality of sensors, illumination light can be generated so as to exhibit a large characteristic change when a plurality of events are synchronized, Thereby, accidental change can be given to illumination light.

  In this illuminating device 1, indirect illumination light is provided in this way, and the feature quantity indicating the situation of the place where the microphone 3 is arranged from the output signal of the microphone 3 is a full-wave rectification process of this output signal, The illumination light can be variously changed according to the noise of the place where the microphone 3 is installed.

  The change of the element according to the feature amount is executed by changing the parameter value from the reference parameter value according to the displacement of the feature amount with respect to the reference value, and thereby the change from the illumination light by the reference parameter value. The illumination light can be changed variously according to the situation of the place where the microphone 3 is installed.

  A plurality of objects are arranged in the virtual three-dimensional space, and the plurality of objects are respectively mapped and provided with indirect illumination light. Thereby, in this illuminating device 1, the depth feeling can be brought out further in illumination light.

(3) Effects of the embodiment According to the configuration described above, by mapping and projecting the video of the content onto the object in the three-dimensional space, and changing the element defining the three-dimensional space by the sensor output, Like natural light, illumination light can be variously changed according to the situation.

  At this time, a feature quantity indicating a situation of the place where the sensor is arranged is detected from an output signal of the sensor, and an element defining the three-dimensional space is changed according to the feature quantity, thereby changing the place where the sensor is arranged. The illumination light can be variously changed according to the situation.

  In addition, since the change of the element according to the feature amount is a process of changing the parameter value of the element from the reference parameter value according to the displacement of the feature amount with respect to the reference value, the reference parameter can be obtained by a simple process. The illumination light can be changed variously based on the value.

  Further, by arranging a plurality of objects in this three-dimensional space, it is possible to create a deeper feeling in the illumination light.

  FIG. 6 is a schematic diagram illustrating an illumination apparatus according to Embodiment 2 of the present invention. The lighting device 21 distributes the video data DV1 output from the source 2 by the distributor 22 and outputs it to the computers 4A and 4B. The computers 4A and 4B input audio signals from the microphones 3A and 3B, respectively, and output video data to the projectors 5A and 5B, in the same manner as the computer 4 described above with respect to the first embodiment. Thereby, this illuminating device 21 supplies illumination light to a wider range compared with the illuminating device 1 mentioned above about Example 1. FIG.

  The reference signal generator 23 generates and outputs clocks of the computers 4A and 4B, and the computers 4A and 4B operate according to the clock generated by the reference signal generator 23, thereby executing a series of processes in synchronization.

  Here, the sound speed is about 340 [m / sec] at 20 degrees and 1 atmosphere. Thus, if the interval between the two microphones 3A and 3B is set to several tens of meters, a time difference that can be sufficiently recognized by the user can be given to the change in illumination light by the projectors 5A and 5B. As a result, the user can grasp the direction of sound transmission by the change of light. As a result, the space can be further enhanced by both the perceptual and auditory stimuli and the synergistic effect of both the stimuli.

  According to this embodiment, the effect of the space as indirect light can be further increased by executing the processing related to the illumination light with two systems.

  In the above-described embodiment, the case where the transparency is changed by the prior setting has been described. However, the present invention is not limited to this, and the changing element may be switched as appropriate. In this case, the switching may be performed by the output of another sensor, may be switched by setting a timer or the like, or may be switched by a user operation. In addition, if it switches by a user's operation in this way, the change of illumination light can be switched variously by a user's own operation. Further, such switching of elements may be performed by increasing or decreasing elements to be controlled by sensor output.

  In the above-described embodiment, the case where one element is changed by one sensor output has been described. However, the present invention is not limited to this, and another sensor is provided, and the other output signal is used. Other elements may be changed. In this way, the illumination light can be further changed.

  The present invention can be applied, for example, when the color of illumination is changed variously according to indoor conditions.

It is a flowchart which shows the process sequence of the computer in the illuminating device which concerns on the Example of this invention. It is a basic diagram which shows the illuminating device which concerns on the Example of this invention. It is a signal waveform diagram with which it uses for description of the detection process of the feature-value in the illuminating device of FIG. It is a basic diagram with which it uses for description of virtual three-dimensional space. It is an approximate line figure used for explanation of mapping. It is a basic diagram which shows the illuminating device which concerns on Example 2 of this invention.

Explanation of symbols

1,21 ... Lighting device, 2 ... Source, 3, 3A, 3B ... Microphone, 4, 4A, 4B ... Computer, 5, 5A, 5B ... Projector

Claims (6)

An arithmetic processing unit that processes video content output from a source and outputs video data;
A light modulation unit that spatially modulates and emits light from a primary light source according to the video data,
The arithmetic processing unit includes:
The video data is mapped to an object in a virtual three-dimensional space to generate the video data, and at least one element of the plurality of elements defining the three-dimensional space is output as a sensor output signal. A lighting device characterized by being changed by the above. The arithmetic processing unit includes:
Detecting a feature quantity indicating a situation of a place where the sensor is arranged from an output signal of the sensor;
The lighting device according to claim 1, wherein the at least one element is changed according to the feature amount. The arithmetic processing unit includes:
The lighting device according to claim 1, wherein selection of the at least one element from a plurality of elements defining the three-dimensional space is received by a user operation. The change of the at least one element according to the feature amount is
The lighting device according to claim 2, wherein the lighting device is a process of changing a parameter value related to the one element from a reference parameter value according to a displacement of the feature amount with respect to a reference value. The lighting device according to claim 1, wherein a plurality of the objects are arranged in the virtual three-dimensional space. The arithmetic processing unit includes:
The lighting device according to claim 1, wherein another element that defines the three-dimensional space is changed by an output signal of another sensor different from the sensor.

Images