JP2006107905A - Illumination control device and illumination control method, recording medium, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination control device and an illumination control method capable of controlling illumination light into appropriate lightness and color in compliance with the image to be displayed. <P>SOLUTION: A CPU 24 detects characteristic amount of image data input from an image input device 11 at every processing blocks, and detects a characteristic image area having highest eye catching property on an image based on the image data, depending on the characteristic amount. The CPU 24 calculates a setting value of an illumination parameter depending on the change of the characteristic amount of the image data of an image including the distance between the characteristic image area and an illumination area, and the characteristic image area as a center. An illumination control part 26 outputs an illumination control information to an illumination device 15 by synchronizing with a display of the image of an image display device 14, and makes the illumination device irradiate a light having lightness and color based on a set value of an illumination parameter. The illumination control device is used for the illumination device for household home theater. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an illumination control device and method, a recording medium, and a program, and more particularly to an illumination control device and method, a recording medium, and a program for controlling the brightness and color of illumination light based on an image to be displayed.

2. Description of the Related Art In recent years, research has been actively conducted to make an image easier to see by changing the illuminance of illumination light in space in conjunction with an image displayed on a display device or the like (see, for example, Patent Document 1).
JP 2003-323169 A

  However, in the invention described in Patent Document 1, the brightness of the illumination light is adjusted based on the average value and the white peak value of the image signal. For example, even in a locally bright image, the brightness of each part is Even if an image does not change much, if the average value and the white peak value of the image signal are almost the same, the illumination light is adjusted to the same brightness regardless of the difference in the image characteristics. There is a problem that the brightness is not always adjusted to be suitable for illumination.

  The present invention has been made in view of such circumstances, and is intended to control the brightness or color of illumination light to a brightness or color more suitable for the displayed image.

  An illumination control device of the present invention is an illumination control device that controls the brightness or color of illumination light of an illumination device that irradiates a plurality of illumination lights of individual brightness or color based on an image displayed on a display device. A feature that detects a feature amount that is a hue, brightness, or saturation of image data of an image displayed on a display device, and that detects a feature region having the highest attractiveness in the image based on the feature amount A setting unit configured to set the brightness or color of the illumination light based on a detection unit, a distance between the feature region and the irradiation position of the illumination light, and a change in a feature amount of image data in an image centered on the feature region; It is characterized by including.

  The feature detection means can divide the image into a plurality of divided regions, and set the divided region having the largest feature amount difference from the adjacent divided regions as the feature region.

  The setting means can set the hue, brightness, or saturation of the illumination light.

  The illumination device emits illumination light of brightness or color based on a parameter value supplied from the outside, and the setting means sets the parameter value and outputs the set parameter value to the illumination device Means can be further included.

  The parameter can include a hue value, a brightness value, or a saturation value of the illumination light.

  The parameter output means can output the parameter set based on the image data of the image to the illumination device in synchronization with the display of the image on the display device.

  The illumination control method of the present invention is an illumination control method for controlling the brightness or color of illumination light of an illumination device that emits a plurality of illumination lights of individual brightness or color based on an image displayed on a display device. A feature detection step of detecting a feature amount that is a hue, brightness, or saturation of image data of an image displayed on a display device, and detecting a feature region having the highest attractiveness in the image based on the feature amount And a setting step for setting the brightness or color of the illumination light based on the distance between the feature area and the irradiation position of the illumination light, and the change in the feature amount of the image data in the image centered on the feature area. It is characterized by that.

  The program recorded on the recording medium of the present invention is a program for a computer of an illumination control apparatus that controls the brightness or color of illumination light of an illumination apparatus that irradiates a plurality of illumination lights of individual brightness or color. Feature detection that detects the feature amount that is the hue, lightness, or saturation of the image data of the image displayed on the display device, and detects the feature region having the highest attractiveness in the image based on the feature amount And a setting step for setting the brightness or color of the illumination light based on the distance between the feature region and the irradiation position of the illumination light and the change in the feature amount of the image data in the image centered on the feature region. It is characterized by including.

  The program of the present invention is a program that causes a computer of an illumination control device that controls the brightness or color of illumination light of an illumination device that irradiates a plurality of illumination lights of individual brightness or color to perform illumination control processing. A feature detection step of detecting a feature amount that is a hue, brightness, or saturation of image data of an image displayed on a display device, and detecting a feature region having the highest attractiveness in the image based on the feature amount And a setting step for setting the brightness or color of the illumination light based on the distance between the feature area and the irradiation position of the illumination light, and the change in the feature amount of the image data in the image centered on the feature area. It is characterized by that.

  In the illumination control device and method, the recording medium, and the program of the present invention, a feature amount that is a hue, brightness, or saturation of image data of an image displayed on the display device is detected, and based on the feature amount, A feature region having the highest attractiveness in the image is detected, and based on the distance between the feature region and the irradiation position of the illumination light and the change in the feature amount of the image data in the image centered on the feature region, The brightness or color of the illumination light of the illumination device that emits a plurality of illumination lights of brightness or color is set.

  According to the present invention, the brightness or color of illumination light can be controlled based on a displayed image. Further, according to the present invention, the brightness or color of the illumination light can be controlled to a brightness or color more suitable for the displayed image.

  Embodiments of the present invention will be described below. Correspondences between constituent elements described in the claims and specific examples in the embodiments of the present invention are exemplified as follows. This description is to confirm that specific examples supporting the invention described in the claims are described in the embodiments of the invention. Therefore, even though there are specific examples that are described in the embodiment of the invention but are not described here as corresponding to the configuration requirements, the specific examples are not included in the configuration. It does not mean that it does not correspond to a requirement. On the contrary, even if a specific example is described here as corresponding to a configuration requirement, this means that the specific example does not correspond to a configuration requirement other than the configuration requirement. not.

  Further, this description does not mean that all the inventions corresponding to the specific examples described in the embodiments of the invention are described in the claims. In other words, this description is an invention corresponding to the specific example described in the embodiment of the invention, and the existence of an invention not described in the claims of this application, that is, in the future, a divisional application will be made. Nor does it deny the existence of an invention added by amendment.

  The lighting control device according to claim 1 (for example, the lighting image management device 13 in FIG. 1) is based on an individual brightness or an image displayed on a display device (for example, the image display device 14 in FIG. 1). An illumination control device that controls the brightness or color of the illumination light of an illumination device that illuminates a plurality of color illumination lights (for example, the illumination device 15 in FIG. 1), and is an image of an image displayed on the display device A feature amount (for example, a processing block feature amount) that is the hue, brightness, or saturation of data is detected, and a feature region (for example, a feature image region) having the highest conspicuousness among the images based on the feature amount. ) For detecting the feature (for example, the image data feature detection unit 83 in FIG. 3), the distance between the feature region and the irradiation position of the illumination light (for example, the illumination region 62 in FIG. 2), and the feature Of the image centered on the region Based on the change in the characteristic quantity of serial image data, setting means for setting the brightness or color of the illumination light (e.g., the illumination parameter setting unit 84 in FIG. 3), characterized in that it comprises a.

  In the illumination control device according to claim 2 (for example, the illumination image management device 13 in FIG. 1), the feature detection unit divides the image into a plurality of divided regions (for example, the image region 52 in FIG. 2). The divided area having the largest difference in the feature amount from the adjacent divided areas is defined as the feature area.

  In the illumination control device according to claim 4 (for example, the illumination image management device 13 in FIG. 1), the illumination device has brightness or color based on a value of a parameter (for example, illumination parameter) supplied from the outside. Irradiating the illumination light, the setting means further sets a parameter value, and further outputs a parameter output means (for example, the illumination control unit 26 in FIG. 1) that outputs the set parameter value to the illumination device. It is characterized by including.

  The illumination control method according to claim 7 is an illumination device that irradiates a plurality of illumination lights of individual brightness or color based on an image displayed on a display device (for example, the image display device 14 in FIG. 1). For example, an illumination control method for controlling the brightness or color of the illumination light of the illumination device 15) in FIG. 1, which is the hue, brightness, or saturation of image data of an image displayed on the display device A feature detection step (for example, FIG. 5) that detects a feature region (for example, a feature image region) in the image based on the feature amount and detects a feature region (for example, a feature image region) having the highest conspicuousness. Steps S22 to S24), the distance between the feature region and the illumination light irradiation position (for example, the illumination region 62 in FIG. 2), and the feature of the image data of the image centered on the feature region To change in quantity Zui, a setting step of setting the brightness or color of the illumination light (e.g., steps S41 to S44 in FIG. 7); and a.

  The program recorded on the recording medium according to claim 8 (for example, the removable medium 711 in FIG. 9) is individually recorded based on the image displayed on the display device (for example, the image display apparatus 14 in FIG. 1). An illumination control device (for example, the illumination image management device 13 of FIG. 1) that controls the brightness or color of the illumination light of an illumination device (for example, the illumination device 15 of FIG. 1) that irradiates a plurality of illumination lights of brightness or color. ) And a feature amount (for example, a processing block feature amount) that is a hue, brightness, or saturation of image data of an image displayed on the display device, and is based on the feature amount A feature detection step (for example, steps S22 to S24 in FIG. 5) for detecting a feature region (for example, a feature image region) having the highest attractiveness in the image, the feature region, and the feature region Based on the distance from the irradiation position of the bright light (for example, the illumination area 62 in FIG. 2) and the change in the feature amount of the image data of the image around the feature area, the brightness of the illumination light or And a setting step (for example, steps S41 to S44 in FIG. 7) for setting a color.

  The program according to claim 9 is an illumination device that irradiates a plurality of illumination lights of individual brightness or color based on an image displayed on a display device (for example, the image display device 14 in FIG. 1). 1 is a program for causing a computer of an illumination control device (for example, the illumination image management device 13 of FIG. 1) of the illumination device 15) of FIG. 1 to control the brightness or color of the illumination light. A feature amount (for example, a processing block feature amount) that is a hue, lightness, or saturation of image data of an image displayed on the display device is detected, and the most attractiveness among the images is detected based on the feature amount. A feature detection step (for example, steps S22 to S24 in FIG. 5) for detecting a high feature region (for example, a feature image region), and the feature region and the irradiation position of the illumination light (for example, the illumination region 62 in FIG. 2). And a setting step (for example, steps S41 to S41 in FIG. 7) for setting the brightness or color of the illumination light based on the distance and the change in the feature amount of the image data of the image centered on the feature region. S44).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an embodiment of an image display system 1 to which the present invention is applied.

  The image display system 1 includes an image input device 11, a user interface (I / F) 12, an illumination image management device 13, an image display device 14, and an illumination device 15.

  The image input device 11 is, for example, a Blu-ray disc recorder, a hard disk recorder, a DVD (Digital Versatile Disk) recorder, a video recording / playback device such as a video recorder, a video playback device such as a DVD player, a video imaging device such as a video camera, or a digital camera. Image capturing devices such as scanners, image reading devices such as scanners, or television signal receiving devices such as television tuners. The image input device 11 inputs analog image data to an A / D (Analog / Digital) conversion unit 21 of the illumination image management device 13 and inputs digital image data to a digital interface (I / F) unit 22.

  The user interface (I / F) 12 includes, for example, various switches and buttons, and receives an operation instruction input from the user. Further, the user interface 12 displays, for example, an execution state of processing of the image display system 1 on a display unit (not shown) and notifies the user.

  The illumination image management device 13 includes an A / D conversion unit 21, a digital interface (I / F) unit 22, a memory 23, a CPU (Central Processing Unit) 24, a D / A (Digital / Analog) conversion unit 25, and an illumination It is comprised by the control part 26.

  The A / D converter 21 A / D converts analog image data input from the image input device 11 into digital image data. The A / D converter 21 stores the A / D converted image data in the memory 23 and supplies the CPU 24 with information indicating that the image data has been input (hereinafter referred to as image data input information).

  The digital interface unit 22 stores the digital image data input from the image input device 11 in the memory 23 and supplies the CPU 24 with image data input information indicating that the image data has been input.

  The memory 23 is rewritable such as EEPROM (Electrically Erasable and Programmable Read Only Memory), MRAM (Magnetoresistive Random Access Memory), FeRAM (Ferroelectric Random Access Memory), OUM (Ovonic Unified Memory), etc. Non-volatile memory, RAM (Random Access Memory), HDD (Hard Disk Drive), or the like. The memory 23 stores a program used in executing the processing of the CPU 24 and parameters and data that change as appropriate in the execution. The memory 23 stores image data input from the image input device 11.

  The CPU 24 controls processing executed by each unit of the illumination image management device 13 by executing a predetermined program based on signals instructing various processing input by the user operating the user interface 12. . As will be described later with reference to FIGS. 4 to 8, the CPU 24 controls parameters (for controlling the brightness and color of the illumination light emitted from the illumination device 15 based on the image data input from the image input device 11). Hereinafter, the set value of the illumination parameter is calculated, and the calculated set value of the illumination parameter is supplied to the illumination control unit 26.

  The D / A converter 25 reads image data from the memory 23 under the control of the CPU 24, and D / A converts the read image data into analog image data. The D / A converter 25 outputs the D / A converted image data to the image display device 14.

  Under the control of the CPU 24, the illumination control unit 26 synchronizes with the display of the image on the image display device 14, for example, information for controlling the processing of the illumination device 15 based on a protocol based on the DMX512 standard ( (Hereinafter referred to as illumination control information) is output to the illumination device 15 to control the processing of the illumination device 15. The illumination control information includes the illumination parameters described above, the region of the illumination part of the illumination device 15 that emits illumination light based on the illumination parameters, and the time for illuminating illumination light based on the illumination parameters (for example, the time to start and end the illumination). Etc.). Further, the illumination control information can include information such as pan (horizontal axis movement), tilt (vertical axis movement), gobo (picture), and the like of the illumination device 15.

  As shown in FIG. 2, the image display device 14 includes a screen 51 configured by, for example, an LCD (Liquid Crystal Display) or a PDP (Plasma Display Panel), and the image data supplied from the illumination image management device 13. An image based on is displayed on the screen 51. As will be described later with reference to FIGS. 4 to 8, the image displayed on the screen 51 is divided into 16 areas of image areas 52-1 to 52-16, and the feature amount of the image data of each image area Based on the lighting parameters are set. Hereinafter, the image regions 52-1 to 52-16 are simply referred to as the image region 52 when it is not necessary to distinguish them. Further, the number of image areas 52 is not limited to 16, and may be any number.

  The illumination device 15 includes, for example, a plurality of light emitting diodes of three colors of red, green, and blue, or a fluorescent color lamp, and as illustrated in FIG. 2, an illumination surface 61L adjacent to the left of the screen 51, and The illumination surface 62R adjacent to the right of the screen 51 is irradiated with colored illumination light from behind the illumination surfaces 61L and 61R. Hereinafter, when it is not necessary to distinguish the illumination surfaces 61L and 61R, they are simply referred to as the illumination surface 61.

  The illumination surface 61 is made of, for example, a screen that transmits illumination light from behind. As shown in FIG. 2, the illumination surface 61L is divided into 16 illumination regions of illumination regions 62L-1 to 62L-16, and the illumination surface 61R is 16 illumination regions of illumination regions 62R-1 to 62R-16. It is divided into. Hereinafter, when it is not necessary to distinguish the illumination areas 62L-1 to 62L-16 or the illumination areas 62R-1 to 62R-16, they are simply referred to as the illumination area 62L or the illumination area 62R. Hereinafter, when it is not necessary to distinguish the illumination areas 62L and 62R, they are simply referred to as the illumination area 62. The illumination device 15 irradiates each illumination area 62 with illumination light of individual brightness or color based on the illumination control information supplied from the illumination image management device 13.

  The number of illumination areas 62 is not limited to 32, and may be any number. Moreover, the illuminating device 15 may irradiate illumination light from the front rather than from behind the illumination surface 61, and the illumination surface 61 may reflect the illumination light.

  Hereinafter, a coordinate system indicating the positional relationship between the image area 52 and the illumination area 62 is defined as follows. That is, the center of the screen 51 (the contact point of the image areas 52-6, 52-7, 52-10, and 52-11) is the origin, the horizontal axis passing through the origin is the x axis, and the vertical direction passing through the origin is Let the axis be the y-axis. Further, the right direction of the x axis is a positive direction, and the upward direction of the y axis is a positive direction. Further, the length of one side of the image area 52 and the illumination area 62 is 2, and the positions of the image area 52 and the illumination area 62 are represented by the coordinates of the centers of the respective areas. For example, the position of the image area 52-7 is (1, 1), and the position of the illumination area 62L-16 is (-11, -3). The distance between the two areas is expressed by the distance between the positions (centers) of the respective areas.

  The arrangement, shape, and the like of the screen 51 and the illumination surface 61 are not limited to the example shown in FIG.

  FIG. 3 is a block diagram illustrating an example of a functional configuration realized by the CPU 24 that executes a lighting control program. When the CPU 24 executes the program, an image data management unit 81, an area information management unit 82, an image data feature detection unit 83, an illumination parameter setting unit 84, and a display timing control unit 85 are realized.

  When image data input information is supplied from the A / D conversion unit 21 or the digital interface unit 22, the image data management unit 81 uses the supplied image data input information as the image data feature detection unit 83 and the display timing control unit 85. To supply. The image data management unit 81 controls the D / A conversion unit 25 based on the output timing signal supplied from the display timing control unit 85 to perform D / A conversion on the image data stored in the memory 23, The D / A converted image data is supplied to the image display device 14.

  The area information management unit 82 is information input by the user via the user interface 12 and related to the image area 52 such as arrangement, shape, dimensions, and number of pixels (hereinafter referred to as image area information), and arrangement, shape, dimensions. Information relating to the illumination area 62 (hereinafter referred to as illumination area information) such as the distance to each image area 52 is stored in the memory 23 and managed. The area information management unit 82 supplies the image area information or the illumination area information to the image data feature detection unit 83 or the illumination parameter setting unit 84 as necessary.

  As will be described later with reference to FIG. 5, the image data feature detection unit 83 divides the image data into data blocks (hereinafter referred to as processing blocks) for each image data corresponding to the image area 52, and features for each processing block. (Hereinafter, referred to as a processing block feature amount) is detected. The image data feature detection unit 83 detects an image region 52 having the highest attractiveness (hereinafter referred to as a feature image region) based on the detected processing block feature amount. The image data feature detection unit 83 supplies information indicating the processing block feature amount and the feature image region (hereinafter referred to as image data feature information) to the illumination parameter setting unit 84.

  As will be described later with reference to FIG. 7, the illumination parameter setting unit 84 calculates and calculates the illumination parameter setting value of the illumination light that irradiates each illumination region 62 based on the illumination region information and the image data feature information. Information indicating the set values of the illumination parameters (hereinafter referred to as illumination parameter information) is supplied to the illumination control unit 26. The illumination parameter setting unit 84 supplies information (hereinafter referred to as illumination parameter setting completion information) indicating that the calculation of the illumination parameter setting value has been completed to the display timing control unit 85.

  The display timing control unit 85 manages the timing for displaying an image on the image display device 14, and outputs the output timing signal to the image data management unit 81 and the illumination control when it is time to display the image stored in the memory 23. To the unit 26.

  Next, processing of the image display system 1 will be described with reference to FIGS.

  First, an image display process executed by the image display system 1 will be described with reference to the flowchart of FIG. This process is started when, for example, the user operates the user interface 12 to instruct the start of the process, and ends when the end of the process is instructed.

  In step S1, the illumination image management apparatus 13 acquires image data. Specifically, when the image data is analog data, the image input device 11 inputs the image data to the A / D converter 21, and the A / D converter 21 performs A / D conversion on the image data. The A / D conversion unit 21 stores the A / D converted image data in the memory 23 and supplies the image data input information to the image data management unit 81. The image data management unit 81 supplies the image data input information to the image data feature detection unit 83 and the display timing control unit 85.

  When the image data is digital data, the image input device 11 inputs the image data to the digital interface unit 22, and the digital interface unit 22 stores the input image data in the memory 23 and the image data input information as image data. The data is supplied to the data management unit 81. The image data management unit 81 supplies the image data input information to the image data feature detection unit 83 and the display timing control unit 85.

  In step S <b> 2, the image data feature detection unit 83 executes image data feature detection processing. Details of the image data feature detection processing will be described later with reference to FIG. 5, and the processing block feature amount and the feature image region are detected by this processing. Further, the image data feature information is supplied to the illumination parameter setting unit 84.

  In step S3, the illumination parameter setting unit 84 performs an illumination parameter setting process. Details of the illumination parameter setting process will be described later with reference to FIG. 7. By this process, the illumination parameter setting value of the illumination light irradiated to each illumination area 62 is calculated, and the illumination parameter information is sent to the illumination control unit 26. Supplied. In addition, illumination parameter setting completion information is supplied to the display timing control unit 85.

  In step S <b> 4, the CPU 24 displays an image based on the image data on the image display device 14 and controls the brightness and color of illumination light emitted from the illumination device 15. Specifically, the display timing control unit 85 supplies an output timing signal to the image data management unit 81 and the illumination control unit 26 when it is time to display an image. For example, when the display timing control unit 85 acquires the illumination parameter setting completion information from the illumination parameter setting unit 84, the display timing control unit 85 supplies an output timing signal to the image data management unit 81 and the illumination control unit 26. Alternatively, for example, the display timing control unit 85 supplies an output timing signal to the image data management unit 81 and the illumination control unit 26 based on information indicating the display time recorded in the image data.

  The D / A conversion unit 25 reads the image data from the memory 23 under the control of the image data management unit 81, and D / A converts the read image data into analog image data. The D / A converter 25 supplies the D / A converted image data to the image display device 14 and causes the image display device 14 to display an image based on the image data.

  The illumination control unit 26 generates illumination control information including the set value of the illumination parameter, and supplies the generated illumination control information to the illumination device 15. The illuminating device 15 controls the brightness and color of the illumination light irradiated to each illumination area 62 based on the set value of the illumination parameter included in the illumination control information. The details of the brightness and color of the illumination light applied to each illumination area 62 will be described later with reference to FIG. 7, whereby the image displayed in synchronization with the display of the image on the image display device 14. Illumination parameter setting values calculated based on the image data are output to the illumination device 15, and illumination lights of brightness and color based on the illumination parameter setting values are emitted from the illumination device 15 to the illumination regions 62.

  In step S5, the image data management unit 81 determines whether new image data has been input. Thereafter, until it is determined that new image data is input, the determination process in step S5 is repeated, and image data is input from the image input device 11. In step S5, it is determined that new image data is input. In this case, the process returns to step S1, and the above-described process is repeatedly executed.

  Next, details of an example of the image data feature detection processing in step S2 of FIG. 4 will be described with reference to the flowchart of FIG.

  In step S <b> 21, the image data feature detection unit 83 reads image data from the memory 23.

  In step S22, the image data feature detection unit 83 divides the image data into processing blocks. Specifically, the image data feature detection unit 83 acquires the image region information from the region information management unit 82, and divides the image data into processing blocks based on the image region information.

  In step S23, the image data feature detection unit 83 detects a processing block feature amount. Specifically, the image data feature detection unit 83, for example, for each processing block, an average value of hue, lightness, and saturation based on the Munsell color system of all pixels included in the processing block (hereinafter referred to as hue, respectively). Average values, lightness average values, and saturation average values) are obtained, and the respective average values are used as processing block feature quantities of the processing blocks.

  For example, the hue value (hereinafter referred to as the hue value) is obtained by dividing the Munsell color system hue ring into 10 types of colors, and further dividing the divided hues into 10 levels for 100 stages of hues. It is represented by a value from 1 to 100 assigned according to the order. In addition, the value of brightness (hereinafter referred to as brightness value) is represented by 11 levels from 0 (black) to 10 (white). Saturation values (hereinafter referred to as saturation values) are represented by 16 levels from 0 (achromatic color) to 15 (pure color). In addition to the Munsell color system, the L * a * b * color system, L * C * h color system, Hunter Lab color system, as the color system representing the hue value, lightness value, and saturation value, Other color systems such as the XYZ (Yxy) color system may be used.

  In step S24, the image data feature detection unit 83 detects a feature image region, and the image data feature detection process ends. Specifically, for example, for each processing block, the image data feature detection unit 83 processes the brightness average value of the processing block and the processing corresponding to the image area 52 that is diagonally adjacent to the image area 52 corresponding to the processing block. An average value of differences from the lightness average value of the block (hereinafter referred to as lightness change amount) is calculated. The image data feature detection unit 83 sets an image region 52 corresponding to a processing block (hereinafter referred to as a feature block) having the largest absolute value of the calculated brightness change amount as a feature image region.

  For example, when the average brightness value of the processing block corresponding to each image area 52 is the value shown in FIG. 6, the brightness change amount of the processing block corresponding to the image area 52-1 corresponds to the image area 52-1. The average value of the difference between the lightness average value of the processing block and the lightness average value of the processing block corresponding to the image regions 52-2, 52-5, and 52-6 is represented by ((0-1) + (0-3 ) + (0-2)) ÷ 3 = −2. The brightness change amount of the processing block corresponding to the image area 52-7 is the average brightness value of the processing block corresponding to the image area 52-7 and the image areas 52-2 to 52-4, 52-6, 52-. 8 and 52-10 to 52-12, the average value of the differences from the brightness average values of the processing blocks, and ((10-1) + (10-4) + (10-3) + (10-3 ) + (10-5) + (10-7) + (10-8) + (10-9)) ÷ 8 = 5.

  As a result, the image area 52 having the largest difference from the brightness average value which is one of the feature amounts of the adjacent image areas 52 is detected as the feature image area. More precisely, the change in the brightness average value is larger than the brightness average value of the image data in the adjacent (surrounding) image region 52, and the change amount is biased to a positive value or a negative value. The image area 52 is detected as a feature image area. Therefore, compared to the surrounding image area 52, an image area 52 that is particularly bright or an image area 52 that is particularly dark tends to be detected as a feature image area.

  By the way, even if the average value of the feature amount (hue value, lightness value, saturation value) of the entire image is almost the same, the appearance of the image differs depending on the distribution of the feature amount. It is known that human vision has a property called attractiveness, and images with large brightness and color differences from the background and images with a large area are highly attractive and easily attract people's attention ( For example, “Yuji Kikuta and two others, presentation method of mass information considering importance and attractiveness and evaluation using display achievement level, IEICE technical report, Japan, IEICE, 2000 May, Vol. 100 No. 31, pages 41 to 48, DE2000-6 (document number) ”). In particular, the human eye is said to be more sensitive to differences in brightness than to differences in hue and saturation, and thus the feature image area detected by the above-described processing is most easily noticed by humans, ie The image region 52 having the highest attractiveness tends to be detected.

  Note that the feature image area may be detected based on not only the lightness average value but also the hue average value or the saturation average value, or a combination of these average values. Thereby, based on not only lightness but also hue or saturation, or a combination of hue, lightness, or saturation, their feature values greatly change compared to the adjacent (surrounding) image region 52, The image region 52 having the most characteristic and high attractiveness is detected as the feature image region.

  The feature image area detection method is not limited to the above-described method. For example, the process block having the largest feature amount or the image area 52 corresponding to the smallest process block is set as the feature image area. Based on the feature quantity distribution, the image area 52 corresponding to the processing block having the feature quantity with the least appearance frequency is set as the feature image area, or the image area 52 with the largest change in the feature quantity in time series is featured. For example, a feature image area that is the most attractive image area 52 may be detected.

  The image data feature detection unit 83 supplies the processing parameter feature amount and the image data feature information indicating the feature image region to the illumination parameter setting unit 84.

  Next, details of an example of the illumination parameter setting process in step S3 of FIG. 4 will be described with reference to the flowchart of FIG.

  In step S41, the illumination parameter setting unit 84 selects one illumination area 62. Hereinafter, the illumination area 62 selected in the process of step S41 is referred to as a selected illumination area.

  In step S42, the illumination parameter setting unit 84 uses the image area 52 (hereinafter referred to as an intermediate image area) used for calculating the setting value of the illumination parameter among the image areas 52 existing between the feature image area and the selected illumination area. ) Is set. Hereinafter, the processing block corresponding to the intermediate image area is referred to as an intermediate block.

  Specifically, the illumination parameter setting unit 84 includes the image area 52 displayed at the left end or the right end of the screen 51 among the image areas 52 displayed in the same horizontal row as the feature image area, and the feature image area. Of the image areas 52 displayed in the same vertical column, the image areas 52 displayed at the upper or lower end of the screen 51 are set as candidates for the intermediate image area.

  For example, when the feature image area is the image area 52-7, the candidate for the intermediate image area is that of the screen 51 in the image area 52 displayed in the same horizontal row as the image area 52-7 that is the feature image area. Of the image area 52-5 displayed at the left end, 52-8 displayed at the right end, and the image area 52-7 displayed in the same vertical column as the image area 52-7 as the feature image area, the screen 51 An image area 52-3 displayed at the upper end and 52-15 displayed at the lower end. When the feature image area is displayed at the left end, the right end, the upper end, or the lower end of the screen 51, the feature image area itself is taken as one of the candidates for the intermediate image area. For example, when the image area 52-5 is a feature image area, the intermediate image area candidates are the image areas 52-1, 52-5, 52-8, and 52-13.

  Next, the illumination parameter setting unit 84 sets the image region 52 displayed near the selected illumination region among the candidates for the intermediate image region displayed in the same row as the feature image region, and the same column as the feature image region. Of the displayed intermediate image region candidates, the image region 52 displayed near the selected illumination region is set as the intermediate image region.

  For example, when the feature image region is the image region 52-7 and the intermediate image region candidates are the image regions 52-3, 52-5, 52-8, and 52-15, the selected illumination region is the illumination region 62L-4. At this time, the intermediate image area is displayed near the illumination area 62L-4 as the selected illumination area among the candidates for the intermediate image area displayed in the same row as the image area 52-7 as the feature image area. Of the image area 52-5 and the intermediate image area candidates displayed in the same column as the image area 52-7 that is the feature image area, the image that is displayed near the illumination area 62L-4 that is the selected illumination area The area 52-3 is set as the intermediate image area. Hereinafter, the intermediate image area displayed in the same row as the feature image area is referred to as a horizontal intermediate image area, and the intermediate image area displayed in the same column as the feature image area is referred to as a vertical intermediate image area.

  When the selected illumination area is located in the same row as the feature image area, the intermediate image area is only the horizontal intermediate image area. For example, when the feature image region is the image region 52-7 and the selected illumination region is the illumination region 62R-8, only the image region 52-8 that is the horizontal intermediate image region is set as the intermediate image region.

  Further, when the feature image area is a candidate for the intermediate image area and there are three intermediate image area candidates in the same row (or column), the candidate for the horizontal intermediate image area (or the vertical intermediate image area) is Of the intermediate image region candidates displayed in the same row (or column) as the feature image region, only the image region 52 displayed at the left end or right end (or upper end or lower end) of the screen 51 is set. For example, when the image area 52-5 is a feature image area and the intermediate image area candidates are the image areas 52-1, 52-5, 52-8, and 52-13, the intermediate image is arranged in the same column as the feature image area. There are three candidate areas, image areas 52-1, 52-5, and 52-13. The candidates for the vertical intermediate image area are displayed at the upper end of the screen 51 and at the lower end. Only the image area 52-13.

  In step S43, the illumination parameter setting unit 84 calculates a set value of the illumination parameter of the illumination light that irradiates the selected illumination area. Specifically, for example, the illumination parameter is configured by three parameters of a hue value, a lightness value, and a saturation value, similarly to the feature amount of the image region 52.

  For example, the hue value, brightness value, and saturation value of the feature image area are Hr, Br, Sr, respectively, and the hue value, brightness value, and saturation value of the horizontal intermediate image area are respectively Hh, Bh, Sh, and vertical intermediate image area. Hue value, brightness value, and saturation value are Hv, Bv, and Sv, respectively, the distance in the x-axis direction between the feature image area and the selected illumination area is Drix, and the distance in the y-axis direction between the feature image area and the selected illumination area is Driy The distance between the feature image area and the horizontal intermediate image area is Drh, the distance between the feature image area and the vertical intermediate image area is Drv, and the hue value, brightness value, and saturation value of the illumination parameter of the selected illumination area are Hi, Bi , Si, the hue value Hi, the lightness value Bi, and the saturation value Si of the illumination parameter in the selected illumination area are obtained by the following equations (1) to (3).

Hi = Hr + ((Hh−Hr) × Fh (Drix ÷ Drh) + (Hv−Hr) × Fh (Driy ÷ Drv)) ÷ 2… (1)
Bi = Br + ((Bh−Br) × Fb (Drix ÷ Drh) + (Bv−Br) × Fb (Driy ÷ Drv)) ÷ 2 (2)
Si = Sr + ((Sh−Sr) × Fs (Drix ÷ Drh) + (Sv−Sr) × Fs (Driy ÷ Drv)) ÷ 2 (3)

  Fh () indicates a correction function for calculating the hue value of the illumination parameter, Fb () indicates a correction function for calculating the brightness value of the illumination parameter, and Fs () indicates the illumination parameter. The correction function for calculating the saturation value of is shown. In Expressions (1) to (3), the value of the correction function Fh (), Fb (), or Fs () is the distance Drix in the x-axis direction between the feature image area and the selected illumination area, and the feature image area. Calculated based on the ratio of the distance Drh to the horizontal intermediate image area or the distance Dry of the feature image area and the selected illumination area in the y-axis direction and the distance Drv between the feature image area and the vertical intermediate image area Is done.

  When the selected illumination area is located in the same row as the feature image area and only the horizontal intermediate image area exists, the hue value Hi, brightness value Bi, and saturation value Si of the illumination parameters are expressed by the equations (1) to (3). Is obtained by the following equations (4) to (6).

Hi = Hr + (Hh−Hr) × Fh (Drix ÷ Drh) (4)
Bi = Br + (Bh−Br) × Fb (Drix ÷ Drh) (5)
Si = Sr + (Sh−Sr) × Fs (Drix ÷ Drh) (6)

  Furthermore, when the feature image area and the horizontal intermediate image area coincide, that is, when Hr = Hh, Br = Bh, Sr = Sh, and Drh = 0, the hue value Hi, the lightness value Bi, and the saturation of the illumination parameter The value Si is obtained by the following equations (1) ′ to (6) ′ instead of the equations (1) to (6).

Hi = Hr + ((Hv−Hr) × Fh (Driy ÷ Drv)) ÷ 2 (1) '
Bi = Br + ((Bv−Br) × Fb (Driy ÷ Drv)) ÷ 2 (2) '
Si = Sr + ((Sv−Sr) × Fs (Driy ÷ Drv)) ÷ 2 (3) ′
Hi = Hr ... (4) '
Bi = Br ... (5) '
Si = Sr ... (6) '

  Also, when the feature image area and the vertical intermediate image area match, that is, when Hr = Hv, Br = Bv, Sr = Sv, Drv = 0, the hue value Hi, the lightness value Bi, and the saturation value Si of the illumination parameter Is obtained by the following equations (1) ″ to (3) ″ instead of equations (1) to (3).

Hi = Hr + ((Hh−Hr) × Fh (Drix ÷ Drh)) ÷ 2… (1) ''
Bi = Br + ((Bh−Br) × Fb (Drix ÷ Drh)) ÷ 2 ... (2) ''
Si = Sr + ((Sh−Sr) × Fs (Drix ÷ Drh)) ÷ 2 (3) ''

  In the above-described formula, when the value of the brightness value Bi or the saturation value Si of the illumination parameter is lower than the lower limit value, it is corrected to the lower limit value, and when it exceeds the upper limit value, it is corrected to the upper limit value. .

  Also, regarding the hue value Hi, in consideration of the fact that the hues of the upper limit value 100 and the lower limit value 1 are adjacent in the hue ring of the Munsell color system, the value of the hue value Hi is less than the lower limit value in the above formula. If the upper limit value is exceeded, the value of the hue value Hi is corrected to a remainder value divided by 100. However, when the remainder value is 0, the hue value Hi is corrected to the upper limit value of 100. For example, in the above formula, when the hue value Hi is 156, the hue value Hi is corrected to 56 (= 156 mod 100), and when the hue value Hi is -15, When the value of Hi is corrected to 85 (= -15 mod 100) and the value of Hue value Hi becomes 200, the remainder value obtained by dividing the value of Hue value Hi by 100 is 0 (= 200 mod 100) The hue value Hi is corrected to 100.

  Depending on the situation, the hue value Hi is corrected to the lower limit value if it falls below the lower limit value, as well as the lightness value Bi or saturation value Si, and to the upper limit value if it exceeds the upper limit value. You may make it do.

  For example, when the correction functions Fh (), Fb (), and Fs () are defined as the following equations (7) to (9), the above equations (1) to (6) are expressed by the following equations ( 10) to (15).

Fh (x) = x (7)
Fb (x) = x (8)
Fs (x) = x (9)

Hi = Hr + ((Hh−Hr) × (Drix ÷ Drh) + (Hv−Hr) × (Driy ÷ Drv)) ÷ 2 (10)
Bi = Br + ((Bh−Br) × (Drix ÷ Drh) + (Bv−Br) × (Driy ÷ Drv)) ÷ 2 (11)
Si = Sr + ((Sh−Sr) × (Drix ÷ Drh) + (Sv−Sr) × (Driy ÷ Drv)) ÷ 2 (12)
Hi = Hr + (Hh−Hr) × (Drix ÷ Drh) (13)
Bi = Br + (Bh−Br) × (Drix ÷ Drh) (14)
Si = Sr + (Sh−Sr) × (Drix ÷ Drh) (15)

  According to the equations (10) to (15), based on the distance between the feature image area and the selected illumination area (illumination light irradiation position) and the change in the feature amount of the image data in the image centered on the feature image area. Thus, the brightness or color (hue value, brightness value, or saturation value) of the illumination light applied to the selected illumination area is set. More specifically, the amount of change in the feature amount (hue value, brightness value, or saturation value) between the feature image region and the horizontal intermediate image region or the vertical intermediate image region is determined by the feature image region and the selected illumination region. And the illumination parameter setting value (hue value, brightness value, or the illumination light of the selected illumination area) in proportion to the ratio of the distance between the feature image area and the horizontal intermediate image area or the vertical intermediate image area. , Saturation value). That is, the change in the feature amount of the image region 52 centered on the feature image region is also reflected in the setting value of the illumination parameter of the illumination light irradiated on the illumination region 62, and the brightness of the image centered on the feature image region The color change is also reflected in the illumination brightness and color change of the lighting device 15.

  Here, when the feature image region is the image region 52-7 and the feature amount is (Hr, Br, Sr) = (30, 10, 13), illumination based on the equations (10) to (15) An example of calculating the set values of the illumination parameters in the areas 62L-6 and 62L-11 will be described.

  First, when the illumination area 62L-6 is a selected illumination area, the feature image area and the illumination area 62L-6 are in the same row, so the horizontal intermediate image area is the image area 52-5, and there is no vertical intermediate image area. . At this time, the distance in the x-axis direction between the image area 52-7 as the feature image area and the illumination area 62L-6 as the selected illumination area is Drix = 8, and the image area 52-7 as the feature image area and the horizontal intermediate image The distance from the image area 52-5 that is the area is Drh = 4. When the feature amount of the image area 52-5 that is the horizontal intermediate image area is (Hh, Bh, Sh) = (20, 4, 10), the illumination light that is irradiated to the illumination area 62L-6 that is the selected illumination area The illumination parameter setting values (Hi, Bi, Si) are based on the following formulas (13) to (15).

Hi = 30 + (20-30) × (8 ÷ 4) = 10
Bi = 10 + (4−10) × (8 ÷ 4) = − 2
Si = 13 + (10-13) × (8 ÷ 4) = 7

  However, the lightness value Bi is corrected to 0 because it is lower than 0, which is the minimum lightness value.

  Next, when the illumination area 62L-11 is a selective illumination area, the horizontal intermediate image area is the image area 52-5, and the vertical intermediate image area is the image area 52-15. At this time, the distance in the x-axis direction between the image area 52-7 that is the feature image area and the illumination area 62L-11 that is the selected illumination area is Drix = 10, and the image area 52-7 that is the feature image area and the selected illumination area The distance in the y-axis direction from the illumination area 62L-11 is Drix = 2, the distance between the image area 52-7 as the feature image area and the image area 52-5 as the horizontal intermediate image area is Drh = 4, and the feature The distance between the image area 52-7 as the image area and the image area 52-15 as the vertical intermediate image area is Drh = 4. The feature amount of the image region 52-5 that is the horizontal intermediate image region is (Hh, Bh, Sh) = (20, 4, 10), and the feature amount of the image region 52-15 that is the vertical intermediate image region is (Hv, Bv). , Sv) = (10, 6, 15), the setting values (Hi, Bi, Si) of the illumination parameters of the illumination light applied to the illumination area 62L-11, which is the selected illumination area, are expressed by the equation (10). Based on (12), the following values are obtained.

Hi = 30 + ((20-30) x (10 ÷ 4) + (10 -30) x (2 ÷ 4)) ÷ 2 = 12.5
Bi = 10 + ((4−10) × (10 ÷ 4) + (6−10) × (2 ÷ 4)) ÷ 2 = 1.5
Si = 13 + ((10-13) x (10 ÷ 4) + (15 -13) x (2 ÷ 4)) ÷ 2 = 9.75

  However, the values after the decimal point are rounded off to obtain a hue value Hi = 13, a lightness value Bi = 2, and a saturation value Si = 10.

  In step S <b> 44, the illumination parameter setting unit 84 determines whether or not the illumination parameter setting values for the illumination light to be emitted have been calculated for all illumination regions 62. When it is determined that the setting values of the illumination parameters of the illumination light to be irradiated have not been calculated for all the illumination areas 62, the process returns to step S41, and the illumination light to be irradiated for all the illumination areas 62 in step S44. Steps S41 to S44 are repeated until it is determined that the set value of the illumination parameter is calculated. That is, for all the illumination areas 62, the set values of the illumination parameters of illumination light to be irradiated in order are calculated.

  If it is determined in step S44 that the illumination parameter of the illumination light to be emitted has been calculated for the illumination area 62, the process proceeds to step S45.

  In step S45, the illumination parameter setting unit 84 supplies illumination parameter information indicating the calculated illumination parameter setting value to the illumination control unit 26, and the illumination parameter setting process ends.

  Thereafter, in step S4 of FIG. 4 described above, the brightness and color of the illumination light emitted from the illumination device 15 is controlled based on the set value of the illumination parameter in synchronization with the display of the image on the image display device 14. . That is, the distance between the feature image region and each illumination region 62 that is the irradiation position of the illumination light emitted from the illumination device 15, and the feature image region and the surrounding image region 52 (in this example, a horizontal intermediate image) The brightness or color (hue, lightness, or saturation) of the illumination light applied to the illumination area 62 is controlled based on the change in the feature amount of the image data of the image in the area and the vertical intermediate image area. More specifically, changes in brightness and color (hue, lightness, saturation) of an image centering on a characteristic image area that is highly attractive and easily attracts human eyes are developed up to the illumination surface 61, and the illumination device 15. The brightness and color (hue, lightness, saturation) of the illumination light emitted from the light source changes.

  For example, it is known that when a color changes in order of hue (rainbow color order), the person feels the change in color naturally (for example, “Sugano, N, Nasu, T., Human color impressions elicited by well-ordered color signal sequence with minimum distance, Industrial Electronics Society, 2000. IECON 2000. 26th Annual Conference of the IEEE, Japan, 10/22/2000 -10/28/2000 (conference date), vol.3, p.1614-1619 ").

  Therefore, as described above, the change in brightness and color (hue, lightness, and saturation) from the feature image area to the surrounding image area is developed on the illumination surface 61, whereby the image displayed on the image display device 14 is displayed. The viewer can be given a visual effect that naturally spreads, and the viewer can feel comfortable. In addition, the brightness and color of the illumination light emitted from the illumination device 15 is finely controlled according to the displayed image, so that the illumination light emitted from the illumination device 15 is merely to make the image easy to see. Without giving an effect of creating an atmosphere of a space for displaying an image.

  As described above, the feature amount that is the hue, brightness, or saturation of the image data of the image displayed on the display device is detected, and the feature region having the highest attractiveness in the image is detected based on the feature amount. Illumination that irradiates multiple illumination lights of individual brightness or color based on the distance between the feature area and the irradiation position of the illumination light and the change in the feature amount of the image data in the image centered on the feature area When setting the brightness or color of the illumination light of the apparatus, the brightness or color of the illumination light can be controlled based on the displayed image. Further, the brightness or color of the illumination light can be controlled to a brightness or color more suitable for the displayed image.

  In the above description, an example of changing the hue, brightness, and saturation of the illumination light of the illumination device 15 has been shown, but only one or two of them may be changed. For example, even when the color of the illumination light of the illumination device 15 is a single color, each illumination area 62 is based on the change in brightness and color (hue, brightness, saturation) of the image centering on the feature image area with high attractiveness. By controlling the illuminance of the illumination light that irradiates the illuminant, the illumination light that takes into account the attractiveness and makes it easier to see the image than controlling the illuminance of the illumination light based only on the average value of the illuminance of the entire image. Can be irradiated.

  Further, as the correction functions Fh (), Fb (), Fs (), the ratio of the distance Drix between the feature image area and the selected illumination area in the x-axis direction and the distance Drh between the feature image area and the horizontal intermediate image area, or the feature An example of a function for obtaining a value by the ratio of the distance Dry between the image area and the selected illumination area in the y-axis direction and the distance Drv between the feature image area and the vertical intermediate image area has been shown. A function for obtaining a value by a power of a distance ratio, such as a power or a third power, may be used. Further, the correction function may be a function based on a hue, brightness, or saturation change curve obtained through experiments. Further, the correction function may be obtained each time based on the distribution of the feature amount of the image data of the image, the change in time series, and the like.

  Further, the feature image region detection method is not limited to the example described above, but may be detected using a two-dimensional spatial difference filter, or based on the meta information set in the image data. May be detected.

  Further, the setting value of the illumination parameter may be calculated based on the feature amount of the image data of more image areas 52 as well as the intermediate image area. Furthermore, the distance between the feature image area and the irradiation position of the illumination light, if necessary (for example, when the irradiation position cannot be specified by changing the irradiation light irradiation position or illuminating the entire space). Instead of this, the setting value of the illumination parameter may be calculated based on the distance between the feature image area and the light emission position of the illumination light.

  In addition, this invention is applicable to the illuminating device of a home theater for homes, for example.

  The series of processes described above can be executed by hardware or can be executed by software. When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a network or a recording medium into a general-purpose personal computer or the like.

  FIG. 9 is a diagram illustrating an internal configuration example of a general-purpose personal computer 700. A CPU (Central Processing Unit) 701 executes various processes according to a program stored in a ROM (Read Only Memory) 702 or a program loaded from a recording unit 708 to a RAM (Random Access Memory) 703. The RAM 703 also appropriately stores data necessary for the CPU 701 to execute various processes.

  The CPU 701, ROM 702, and RAM 703 are connected to each other via a bus 704. An input / output interface 705 is also connected to the bus 704.

  The input / output interface 705 includes an input unit 706 composed of buttons, switches, a keyboard or a mouse, an output unit 707 composed of a display such as a CRT (Cathode Ray Tube) or LCD (Liquid Crystal Display), and a speaker. Further, a recording unit 708 composed of a hard disk or the like and a communication unit 709 composed of a modem or a terminal adapter are connected. The communication unit 709 performs communication processing via a network including the Internet.

  A drive 710 is also connected to the input / output interface 705 as necessary, and a removable medium 711 made up of a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is appropriately attached, and a computer program read therefrom is read. Installed in the recording unit 708.

  As shown in FIG. 9, a recording medium that records a program that is installed in a computer and can be executed by the computer is distributed to provide a program to a user separately from the apparatus main body. Recording magnetic disk (including flexible disk), optical disk (including CD-ROM (Compact Disc-Read Only Memory), DVD (Digital Versatile Disc)), magneto-optical disk (MD (Mini-Disc) (registered trademark) ), Or included in the ROM 703 or the recording unit 708 in which a program is provided that is provided to the user in a state of being incorporated in the apparatus main body in advance. Hard disk.

  In the present specification, the step of describing the program stored in the program storage medium is not limited to the processing performed in chronological order according to the described order, but is not necessarily performed in chronological order. Or the process performed separately is also included.

  Further, in this specification, the system represents the entire apparatus composed of a plurality of apparatuses.

It is a block diagram which shows one Embodiment of the image display system to which this invention is applied. It is a figure which shows the positional relationship of the image area | region of the image displayed on the screen of the image display apparatus of FIG. 1, and the illumination area | region of the illumination surface irradiated with illumination light from an illuminating device. It is a figure which shows the example of a structure of the function implement | achieved when CPU of FIG. 1 performs a program. 3 is a flowchart for explaining an example of image display processing of the image display apparatus of FIG. 1. 5 is a flowchart illustrating details of image data feature detection processing in step S2 of FIG. 4. It is a figure for demonstrating the detection method of a feature image area | region. It is a flowchart explaining the detail of the illumination parameter setting process of step S3 of FIG. It is a figure for demonstrating the calculation method of the setting value of an illumination parameter. And FIG. 16 is a block diagram illustrating a configuration example of a personal computer.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Image display system, 11 Image input device, 12 User interface, 13 Illumination image management device, 14 Image display device, 15 Illumination device, 21 A / D conversion part, 22 Digital interface part, 23 Memory, 24 CPU, 25 D / A conversion unit, 26 illumination control unit, 51 screen, 52 image area, 61 illumination surface, 62 illumination area, 81 image data management unit, 82 area information management unit, 83 image data feature detection unit, 84 illumination parameter setting unit, 85 Display timing control unit, 701 CPU, 702 ROM, 703 RAM, 708 recording unit, 710 drive, 721 removable media

Claims (9)

In an illumination control device that controls the brightness or color of the illumination light of an illumination device that emits a plurality of illumination lights of individual brightness or color based on an image displayed on the display device,
A feature that detects a feature amount that is a hue, brightness, or saturation of image data of an image displayed on the display device, and that detects a feature region having the highest attractiveness in the image based on the feature amount. Detection means;
The brightness or color of the illumination light is set based on the distance between the feature area and the irradiation position of the illumination light and the change in the feature amount of the image data in the image centered on the feature area. A lighting control device comprising: setting means. The feature detection unit divides the image into a plurality of divided regions, and sets the divided region having the largest difference in the feature amount from the adjacent divided regions as the feature region. The lighting control device described. The lighting control apparatus according to claim 1, wherein the setting unit sets a hue, brightness, or saturation of the illumination light. The illumination device irradiates the illumination light of brightness or color based on a parameter value supplied from the outside,
The setting means sets the value of the parameter;
The illumination control device according to claim 1, further comprising parameter output means for outputting the set parameter value to the illumination device. The lighting control device according to claim 4, wherein the parameter includes a hue value, a brightness value, or a saturation value of the illumination light. The parameter output means outputs the parameter set based on the image data of the image to the illumination device in synchronization with display of an image on the display device. Lighting control device. In an illumination control method for controlling brightness or color of the illumination light of an illumination device that emits a plurality of illumination lights of individual brightness or color based on an image displayed on a display device,
A feature that detects a feature amount that is a hue, brightness, or saturation of image data of an image displayed on the display device, and that detects a feature region having the highest attractiveness in the image based on the feature amount. A detection step;
The brightness or color of the illumination light is set based on the distance between the feature area and the irradiation position of the illumination light and the change in the feature amount of the image data in the image centered on the feature area. A lighting control method comprising: a setting step. A computer program for an illumination control device that controls the brightness or color of the illumination light of an illumination device that emits a plurality of illumination lights of individual brightness or color based on an image displayed on the display device. ,
A feature that detects a feature amount that is a hue, brightness, or saturation of image data of an image displayed on the display device, and that detects a feature region having the highest attractiveness in the image based on the feature amount. A detection step;
The brightness or color of the illumination light is set based on the distance between the feature region and the irradiation position of the illumination light and the change in the feature amount of the image data in the image centered on the feature region. A recording medium on which a computer-readable program is recorded. Illumination control processing is performed on the computer of the illumination control device that controls the brightness or color of the illumination light of the illumination device that irradiates a plurality of illumination lights of individual brightness or color based on the image displayed on the display device In the program to be performed
A feature that detects a feature amount that is a hue, brightness, or saturation of image data of an image displayed on the display device, and that detects a feature region having the highest attractiveness in the image based on the feature amount. A detection step;
The brightness or color of the illumination light is set based on the distance between the feature region and the irradiation position of the illumination light and the change in the feature amount of the image data in the image centered on the feature region. A program comprising: a setting step.

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