JP5406899B2 - Display system, image output device, and display device - Google Patents

Description

  The present invention relates to a display system, an image output apparatus, and a display apparatus that can detect a specific image area included in an input image and perform image processing.

  In recent years, color display devices using a liquid crystal panel or a PDP (Plasma Display Panel) are widely used. For example, medical display devices are used for displaying images by X-ray imaging, displaying images captured by an endoscope, and the like. The display device performs correction processing (so-called gamma correction processing) for converting pixel values of an input image from a PC (Personal Computer) or the like into pixel values suitable for display characteristics of the display device. In a display device for medical use, since a suitable display characteristic is different between a monochrome image obtained by X-ray photography (hereinafter simply referred to as monochrome) and a color image obtained by photography using an endoscope or the like, an optimal correction process is performed on the display image. It is desirable.

  However, in recent years, an OS (Operating System) installed in a PC has a multi-window system, and can display a plurality of windows on a display device. For this reason, in a medical display device, a monochrome image of X-ray photography and a color image such as an endoscope may be displayed simultaneously on one screen. There is a problem that it is difficult to perform the correction process appropriately.

  In Patent Document 1, for an image display device that can change the display attribute of a specific region on the display screen, the information processing device transmits region attribute information for changing the display attribute to the image display device. There has been proposed a system in which an image display device changes display attributes according to received area attribute information. In this system, area attribute information transmitted from the information processing apparatus to the image display apparatus specifies area information that specifies the position of a specific area in which display data is displayed, and display attributes when display data is displayed. Attribute information. The attribute information includes contrast, brightness, chromaticity, γ characteristics, and the like.

Japanese Patent Laid-Open No. 10-275074

  In order to solve the problem that it is difficult for the display device to appropriately perform gamma correction when different types of images are displayed on one screen, the inventors of the present application have disclosed a monochrome region and / or color included in the displayed image. A display device that detects a region or the like and performs gamma correction suitable for each region is proposed. This display device extracts information such as pixel values and edges included in an image to be displayed, and performs region determination according to whether the extracted information satisfies a determination criterion.

  In the display device described above, a certain degree of tolerance is set as a criterion for region determination. These determination criteria and tolerances are determined in advance by a designer or the like by examining characteristics of various images in the design stage of the display device. However, when an unexpected image (that is, an image having an area exceeding the tolerance of the criterion) is input to the display device, there is a risk that an error may occur in the result of region detection by the display device.

  The present invention has been made in view of such circumstances, and the object of the present invention is to display even if an error occurs in the result of area detection by the display device and image processing based on the result. It is an object of the present invention to provide a display system, an image output device, and a display device that allow a user of the device to finely adjust a region.

  A display system according to the present invention stores a display unit that displays an image, a region detection unit that detects a region that satisfies a predetermined condition in the image displayed on the display unit, and position information of the region detected by the region detection unit. Image output unit having a storage unit, a display device having image processing means for performing predetermined image processing on an area related to position information stored in the storage unit, and an image output unit for outputting an image to be displayed to the display device The image output device includes an acquisition unit that acquires position information stored in the storage unit, and a reception unit that receives a change operation of an area related to the position information acquired by the acquisition unit. And a generation unit that generates change information related to the position of the region in response to a change operation received by the reception unit, and an information output that outputs the change information generated by the generation unit to the display device. And means, said display device, said in response to the information output unit change information is output of the image output apparatus, characterized by having a updating means for updating the location information stored in the storage unit.

  In the display system according to the present invention, the region detection unit of the display device repeatedly performs the region detection process, and after the update unit updates the position information, the region detection process is stopped. It is characterized by the above.

  In the display system according to the present invention, the display device includes size changing means for enlarging or reducing the horizontal width and / or vertical width of the image output from the image output device at a predetermined magnification, and the updating means The position information stored in the storage unit is updated according to the change information output by the information output unit of the image output apparatus and the predetermined magnification.

  Moreover, the display system according to the present invention is characterized by comprising means for highlighting an area related to the position information stored in the storage unit.

  In the display system according to the present invention, when the image output device is switched between processing means for generating an image output by the image output means by execution of a program and a program executed by the processing means. Switching notification means for notifying the display device of switching, and the region detecting means of the display device updates the predetermined condition in response to the notification from the image output device. It is characterized by that.

  In the display system according to the present invention, the region detection unit of the display device updates the predetermined condition in accordance with the change information output by the information output unit of the image output device. Features.

  The display system according to the present invention includes a plurality of the display device, the image output device, and a server device, and each image output device has predetermined condition acquisition means for acquiring the predetermined condition from the display device. The predetermined condition acquired by the predetermined condition acquisition unit is transmitted to the server device, the server device receiving a predetermined condition transmitted by the image output device, and the predetermined condition Based on one or more predetermined conditions received by the receiving means, a plurality of common predetermined condition generating means for generating a predetermined predetermined condition common to the plurality of image output devices, and a plurality of common predetermined conditions generated by the predetermined condition generating means. Predetermined condition transmitting means for transmitting to the image output device, each image output device receiving a common predetermined condition receiving the common predetermined condition transmitted by the predetermined condition transmitting means of the server device. And a common predetermined condition output means for outputting the common predetermined condition received by the common predetermined condition receiving means to the display device, wherein the display device outputs the common predetermined condition output means of the image output device. In accordance with the common predetermined condition output from the above, the area detecting means has a predetermined condition updating means for updating a predetermined condition used for area detection.

  In addition, the image output apparatus according to the present invention includes a display unit that displays an image, a region detection unit that detects a region that satisfies a predetermined condition in the image displayed on the display unit, and position information of the region detected by the region detection unit An image to be displayed on the display unit to the display device. An image output apparatus including an image output means for outputting, an acquisition means for acquiring position information stored in the storage unit, and a reception means for receiving a region change operation related to the position information acquired by the acquisition means; In accordance with the change operation received by the receiving means, a generating means for generating change information relating to the position of the region, and an information output means for outputting the change information generated by the generating means to the display device are provided. The features.

  Further, the display device according to the present invention includes a display unit that displays an image, a region detection unit that detects a region that satisfies a predetermined condition in the image displayed on the display unit, and a position of the region detected by the region detection unit A display device comprising: a storage unit for storing information; and an image processing unit that performs predetermined image processing on an area related to position information stored in the storage unit. Means for inputting / outputting, means for outputting the position information stored in the storage unit to the other device, and updating the position information stored in the storage unit according to the change information input from the other device And updating means for performing the processing.

In the present invention, the display device detects an area that satisfies a predetermined condition in the image, stores position information of the detected area (information such as coordinates and size of the area on the display screen) in the storage unit, and stores the stored position information. Each area is subjected to predetermined image processing (gamma correction processing according to the type of each area). An image output device such as a PC (Personal Computer) that outputs an image to a display device has means for accepting a user operation such as a pointing device. The image output device acquires position information stored in the storage unit of the display device and accepts a position change operation for the area detected by the display device. The image output device that has received the position change operation generates change information corresponding to the operation and outputs the change information to the display device, and updates the position information stored in the storage unit by the display device according to the change information. Based on the obtained position information, predetermined image processing is performed on each area.
At this time, the image output apparatus may generate position information reflecting the contents of the received position change operation with respect to the position information acquired from the display apparatus, and output the position information as change information to the display apparatus. In this case, the display device stores the change information from the image output device in the storage unit as new position information. Alternatively, the image output device may output the contents of the position change operation (for example, the displacement amount of the region) as change information to the display device. In this case, the display device updates the position information stored in the storage unit based on the change information from the image output device and the position information stored in the storage unit so that the position information reflects the contents of the position change operation. I do.
As a result, the result of the area detection performed by the display device can be changed by the user using the pointing device of the image output device.

In the present invention, the display device repeatedly performs the area detection process, for example, at regular intervals. However, when the region detection result is changed by the user's position change operation and the position information stored in the storage unit of the display device is updated based on the change information from the image output device, the display device detects the region detection. Stop processing.
Thus, after the position information stored in the storage unit of the display device is updated based on the user's position change operation, automatic area detection by the display device is performed, and the position information of the storage unit is further updated. Can be prevented.

  In addition, the size of the image output by the image output device (the horizontal width and / or the vertical width) may differ from the size of the image displayed on the display unit of the display device. Therefore, in the present invention, the display device enlarges or reduces the size of the image output by the image output device at a predetermined magnification and displays it on the display screen. In this case, since the change information output from the image output device corresponds to the size of the image output from the image output device, the display device given the change information enlarges or reduces the image from the image output device. The position information of the storage unit is updated in consideration of the predetermined size.

  Further, in the present invention, the region related to the position information stored in the storage unit of the display device (that is, the region detection result) is highlighted. Thereby, the user can easily change the detected area. The highlighting may be performed by a display device or may be performed by an image output device.

  When the image output device is a computer that executes various programs, an image output to the display device (that is, an image displayed by the display device) has characteristics (for example, the type of the program executed by the image output device) (for example, Window layout or border thickness). Therefore, in the present invention, predetermined conditions used for area detection of the display device are updated in accordance with a program executed by the image output device. Thereby, the display device can perform the region detection process under conditions suitable for the program executed by the image output device (that is, conditions suitable for the image to be displayed).

In addition, when an area position changing operation is performed by the user, an error may occur in the result of area detection of the display device. Therefore, in the present invention, when change information is given from the image output device, the display device updates a predetermined condition used for area detection. The update of the predetermined condition may be performed by adjusting a threshold value or the like so that an area whose position has been changed by a user operation can be detected.
Thereby, after the user performs the position changing operation, it is possible to detect the area desired by the user even in the automatic area detection by the display device.

In the present invention, a network system is configured by connecting a plurality of display devices, image output devices, and server devices via a LAN (Local Area Network) or the like. Each image main unit acquires a predetermined condition used for region detection processing from each display unit and transmits it to the server unit. The server apparatus collects the predetermined conditions transmitted by the image output apparatus in a lump, calculates, for example, an average value, minimum value, maximum value, or the like of a threshold that defines the predetermined conditions, and sets the predetermined conditions based on the calculation result as a common predetermined It is created as a condition, and the created common predetermined condition is transmitted to a plurality of image output apparatuses. Each image output device gives the common predetermined condition received from the server device to the display device, and the display device updates the predetermined condition used for area detection according to the given common predetermined condition.
Thereby, the update of the predetermined condition used for the area detection of the display device related to the position change operation performed in any of the image output devices can be reflected in the predetermined condition of the other display device. For example, in a network system provided in a hospital or company, there are many opportunities to display the same or similar images at each terminal (display device and image output device). When the apparatus collectively manages, the area detection results at each terminal can be made substantially the same.

  In the case of the present invention, the image output device acquires the position information stored in the storage unit as a result of the region detection of the display device, and the image output device receives the region position change operation and outputs the change information to the display device. With the configuration, even if an error occurs in the result of area detection by the display device and image processing based on this result, the user of the display device can finely adjust the area. Therefore, it is possible to reliably perform image processing for each region, and it is possible to improve visibility of an image displayed on the display device.

1 is a block diagram illustrating a configuration of a display system according to Embodiment 1. FIG. It is a schematic diagram for demonstrating an example of the area | region detection process which an area | region detection part performs. It is a schematic diagram which shows an example of the positional information which an area | region detection part produces. It is a schematic diagram for demonstrating the adjustment process of an area | region detection result. It is a flowchart which shows the procedure of the reception process of position change operation of the area | region detection result by PC. It is a flowchart which shows the procedure of the update process of the positional information by a monitor. 10 is a schematic diagram for explaining threshold update processing performed by a monitor according to Embodiment 2. FIG. 10 is a schematic diagram for explaining threshold update processing performed by a monitor according to Embodiment 2. FIG. 14 is a flowchart illustrating a procedure of region detection condition update processing performed by the PC according to the third embodiment. 14 is a flowchart illustrating a procedure of region detection condition update processing performed by the monitor according to the third embodiment. FIG. 10 is a block diagram illustrating a configuration of a display system according to Embodiment 4. 15 is a flowchart illustrating a procedure of area detection condition update processing performed by the PC according to the fourth embodiment. 15 is a flowchart illustrating a procedure of region detection condition update processing performed by the monitor according to the fourth embodiment. 15 is a flowchart illustrating a procedure of region detection condition update processing performed by the server device of the fourth embodiment.

(Embodiment 1)
Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof. FIG. 1 is a block diagram illustrating a configuration of a display system according to Embodiment 1. In the figure, reference numeral 1 denotes a monitor (display device) having a display unit 18 such as a liquid crystal panel or PDP (Plasma Display Panel). The monitor 1 is connected to a PC (image output device) 3 via a cable for transmitting and receiving image data (image signal), and displays an image related to the image data output from the PC 3. The monitor 1 and the PC 3 are connected via a USB (Universal Serial Bus) cable and can transmit and receive various data to and from each other.

  The monitor 1 includes an MPU (Micro Processing Unit) 11, a memory 12, a USB communication unit 13, an image input unit 14, an area detection unit 15, an LUT 16, a drive unit 17, a display unit 18, and the like. The MPU 11 executes a program stored in advance in the memory 12 to perform processing for controlling the operation of each unit in the monitor 1 and various arithmetic processing. The memory 12 is constituted by a nonvolatile memory element such as an EEPROM (Electrically Erasable Programmable Read Only Memory) or a flash memory, for example, and a program executed by the MPU 11 and data necessary for this processing are stored in advance. The memory 12 can store various data generated in accordance with the processing of the MPU 11. In particular, in the present embodiment, the result of area detection performed by the area detection unit 15 is stored in the memory 12.

  The USB communication unit 13 transmits / receives various data to / from other devices connected via a USB cable. The USB communication unit 13 transmits the data given from the MPU 11 and gives the data received from another device to the MPU 11 via the USB cable. The image input unit 14 receives image data from an image output device such as the PC 3 and supplies the input image data to the region detection unit 15. For example, the MPU 11 reads out the position information of the area detection result stored in the memory 12 and gives it to the USB communication unit 13, and the USB communication unit 13 transmits the given position information to the PC 3.

  The region detection unit 15 performs processing for detecting a predetermined region included in the image displayed on the display unit 18 based on the image data given from the image input unit 14. The area detection unit 15 performs processing such as detecting a window area in the display image and detecting a color area or a monochrome area in the display image, for example. The area detection unit 15 generates position information of the detected area and gives it to the MPU 11, and the MPU 11 stores this position information in the memory 12. The area detection unit 15 provides the image data from the image input unit 14 to the LUT 16.

  The LUT 16 is a table for performing so-called gamma correction, a process of converting each pixel value of the image data given from the area detection unit 15 into a value corresponding to the display characteristics of the display unit 18. The monitor 1 according to the present embodiment includes a plurality of tables for gamma correction in the LUT 16, and the MPU 11 switches the table according to the detection result of the region detection unit 15, and is suitable for each detected region. Gamma correction can be performed. The image data whose pixel values have been converted by the LUT 16 is given to the drive unit 17. The drive unit 17 generates a drive signal to be output to the display unit 18 in accordance with the image data given from the LUT 16. The display unit 18 displays an image according to the given drive signal.

  The PC 3 is a general-purpose computer including a CPU (Central Processing Unit) 31, an image output unit 32, a USB communication unit 33, an input I / F unit 34, a RAM (Random Access Memory) 35, an HDD (hard disk) 36, and the like. It is. The CPU 31 executes various programs stored in advance in the HDD 36, thereby executing control processes and various arithmetic processes for each unit in the PC 3. For example, the CPU 31 executes a medical image display program stored in the HDD 36 to perform processing for displaying the image data stored in the HDD 36 on the monitor 1 by a display method according to the operation of the user of the PC 3. it can. A processing result related to the display by the CPU 31 is given to the image output unit 32. Further, for example, the CPU 31 can perform a process of accepting a user's change operation on the area detection result of the area detection unit 15 of the monitor 1 by executing a program such as a device driver or utility of the monitor 1 stored in the HDD 36. .

  The image output unit 32 generates and outputs image data to be displayed on the monitor 1 according to the processing result of the CPU 31. The USB communication unit 33 transmits and receives various data to and from the monitor 1 connected via a USB cable. For example, the MPU 11 receives a change operation for the area detection result, generates area change information from the received operation content, and gives it to the USB communication section 33, so that the USB communication section 33 transmits the given change information to the monitor 1. .

  The input I / F unit 34 is connected to input devices such as a keyboard 5 and a mouse 6, and signals and the like corresponding to operations performed by the user are input to these input devices. The input I / F unit 34 provides an input signal or input data from the input device to the CPU 31. The RAM 35 is composed of a memory element such as SRAM (Static RAM) or DRAM (Dynamic Random Access Memory), and temporarily stores various data associated with the processing of the CPU 31. The HDD 36 is a large-capacity magnetic storage device, and stores various programs such as an OS (Operating System) and application programs, and various data such as image data and audio data. The HDD 36 stores a program such as a device driver or a utility for the monitor 1.

  The monitor 1 according to the present embodiment displays an image on the display unit 18 based on the image data input from the PC 3. At this time, the monitor 1 detects a predetermined area included in the image to be displayed by the area detection unit 15, determines the image type of the detected area by the MPU 11, and the MPU 11 performs gamma correction by the LUT 16 for each area. Switch the table used for. Accordingly, the monitor 1 can display each area in the image on the display unit 18 with display characteristics suitable for the image type. The region detection process by the region detection unit 15 may be based on any algorithm, but an example of the region detection process will be described below.

  FIG. 2 is a schematic diagram for explaining an example of the area detection process performed by the area detection unit 15. When the OS installed in the PC 3 is equipped with a multi-window system and displays a plurality of windows on the display unit 18 of the monitor 1, the area detection unit 15 of the monitor 1 detects a window area in the display screen. Processing (window detection processing) is performed. In the window detection process, the area detection unit 15 first performs image processing for extracting edge pixels from an image related to image data input from the PC 3 (hereinafter simply referred to as an input image).

  Next, the region detection unit 15 detects a plurality of edge pixels (edge pixel group) that are continuous in the horizontal direction of the input image, and determines whether or not it is equal to or greater than the horizontal length threshold value of the detected edge pixel group. The threshold used for the determination is set in advance such that the horizontal size is 1000 pixels, for example. The area detection unit 15 sets an edge pixel group having a length equal to or greater than a threshold in the horizontal direction as a horizontal line segment. Next, the region detection unit 15 selects two horizontal line segments from a plurality of horizontal line segments detected from the input image, and determines whether or not the distance between the selected two horizontal line segments is greater than or equal to a threshold value. . The region detection unit 15 sets two horizontal direction line segments whose distance is equal to or greater than the threshold value as a horizontal line segment pair.

  Next, the area detection unit 15 performs the same processing in the vertical direction of the input image, and detects the vertical line segment and the vertical line segment pair. The example of FIG. 2 shows the horizontal line segment and the vertical line segment detected by the area detection unit 15 from the input image. In this figure, for example, the region detection unit 15 detects three horizontal line segments Y1 to Y3, and detects two pairs (Y1, Y2) and (Y2, Y3) as horizontal line segment pairs. To do. The area detector 15 detects four vertical line segments X1 to X4, and three pairs (X1, X2), (X2, X3), and (X3, X4) are detected as vertical line segment pairs. To detect.

  The region detection unit 15 detects a region surrounded by the detected horizontal line segment pair and vertical line segment pair as a window region. In the example illustrated in FIG. 2, the region detection unit 15 detects five windows 1 to 5 using two horizontal line segment pairs and three vertical line segment pairs. Note that window 1 is an area surrounded by (Y1, Y2) and (X1, X2), window 2 is an area surrounded by (Y2, Y3) and (X1, X2), and window 3 is ( Y1, Y2) and (X2, X3), window 4 is an area surrounded by (Y2, Y3) and (X2, X3), and window 5 is (Y1, Y3) and (Y X3, X4).

  The area detection unit 15 creates information (position information) indicating the position of the detected area and supplies it to the MPU 11. The MPU 11 stores the given position information in the memory 12. FIG. 3 is a schematic diagram showing an example of position information created by the region detection unit 15 and corresponds to the region detection result shown in FIG. The position information created by the region detection unit 15 is, for example, a window position represented by four coordinates, where the Y coordinate of the horizontal line segment Yn is yn and the X coordinate of the vertical line segment Xn is xn.

  The window position information may include color / monochrome type information of each window. The type of each window is determined by either the MPU 11 or the area detection unit 15 and the determination result is added to the window position information. The type can be determined, for example, by calculating the number of color pixels and the number of monochrome pixels in each window and determining which number of pixels is larger.

  The window detection process described above is for detecting a main window (a window having a relatively large size) displayed in an application program executed on the PC 3 or the like. On the other hand, as the application program is executed, a relatively small window, a so-called pop-up window, may be displayed. The area detection unit 15 of the monitor 1 may be configured to perform processing for detecting such a pop-up window. The pop-up window detection process will be described below.

  In the pop-up window detection process of the area detection unit 15, the horizontal edge pixel group that is not detected as a horizontal line segment pair in the above-described window detection process and the vertical direction pixel group that is not detected as a vertical line segment pair. This is performed for the edge pixel group. The area detection unit 15 determines whether or not the length of each vertical edge pixel group not detected as a vertical line segment pair is within a predetermined range, and the length of the edge pixels within the predetermined range. The group is detected as a short vertical line segment. The predetermined range used for the determination of the short vertical line segment is obtained by, for example, multiplying the vertical distance of the window detected by the above-described window detection processing by a predetermined coefficient (for example, 0.8 to 0.9 times). Can be used.

  Similarly, the region detection unit 15 determines whether or not the length of each horizontal edge pixel group not detected as a horizontal line segment pair is within a predetermined range, and the length is within the predetermined range. The edge pixel group is detected as a short horizontal line segment. The predetermined range used for the determination of the short horizontal line segment is obtained by, for example, multiplying the horizontal distance of the window detected by the above-described window detection process by a predetermined coefficient (for example, 0.8 to 0.9 times). Can be used.

  Next, the region detection unit 15 detects a pair of short vertical line segments that may form a pop-up window from the detected plurality of short vertical line segments. For each short vertical line segment pair, the region detection unit 15 searches for two short horizontal line segments most suitable for forming a pop-up window, thereby causing the short horizontal direction for the short vertical line segment pair. Detect line pairs. The area detection unit 15 uses the combination of the detected short vertical line segment pair and short horizontal line segment pair as a pop-up window, and creates position information of the pop-up window. Note that the position information of the pop-up window can be represented by four coordinates, similar to the position information of the window shown in FIG.

  The monitor 1 performs window detection as described above in the area detection unit 15, determines the type (color / monochrome) of the image displayed in each window based on the pixel value in the detected window, and the like. The position information shown in FIG. The MPU 11 performs gamma correction suitable for the type of color / monochrome for each window by switching the gamma correction table in the LUT 16 based on the position information stored in the memory 12.

  In the window detection process performed by the region detection unit 15, it is determined whether the length of the edge pixel group is equal to or greater than the threshold when detecting the horizontal line segment and the vertical line segment. Further, in the pop-up window detection process performed by the area detection unit 15, when detecting the short vertical line segment and the short horizontal line segment, whether or not the length of the horizontal line segment and the vertical line segment is within a predetermined range. Determine whether. The determination criteria such as the threshold value and the predetermined range are set to appropriate values in the design stage of the monitor 1 or the like, but there is a possibility that an erroneous determination occurs when an unexpected image is input from the PC 3. Since the monitor 1 switches the table for gamma correction according to the result of area detection, there is a possibility that appropriate gamma correction cannot be performed if an erroneous determination occurs in area detection.

  Therefore, in the display system according to the present embodiment, the result of area detection by the monitor 1 can be adjusted by the user using an input device such as the mouse 6 connected to the PC 3. FIG. 4 is a schematic diagram for explaining the region detection result adjustment processing. In the upper part of FIG. 4, an example of an image displayed on the display unit 18 of the monitor 1 is shown. In this example, five windows (windows 1 to 5) are arranged side by side on the display unit 18, a color image is displayed in the windows 1 to 4, and a monochrome image is displayed in the window 5.

  The user can make various settings related to the monitor 1 by executing the utility program of the monitor 1 recorded in the HDD 36 on the PC 3, and can adjust the area detection result in the settings. For example, when adjustment of the area detection result is selected by the user from a utility program menu or the like, the CPU 31 of the PC 3 requests the monitor 1 to transmit the position information of the area detection result from the USB communication unit 33. When the MPU 11 of the monitor 1 receives a position information transmission request from the PC 3 by the USB communication unit 13, the MPU 11 reads the position information stored in the memory 12 and sends it to the USB communication unit 13 to transmit it to the PC 3.

  The PC 3 that has received the position information from the monitor 1 by the USB communication unit 33 highlights the region detection result based on the position information. For example, in the example shown in the middle part of FIG. 4, the region detection result is highlighted by overlaying and displaying hatched rectangular frames. Since the CPU 31 of the PC 3 can obtain the four vertex coordinates of the detected area by referring to the position information received from the monitor 1, the rectangular frame surrounded by these vertex coordinates is displayed on the original display image. By generating a superimposed image and outputting the generated image data from the image output unit 32 to the monitor 1, highlighting can be realized. However, the highlighting may be performed on the monitor 1.

  In the example shown in the middle part of FIG. 4, the user can confirm that there is an error in the area detection result for the window 4 by highlighting. In this case, the user uses the mouse 6 connected to the PC 3 to detect the region by performing an operation such as dragging and dropping the mouse cursor 61 displayed on the screen over the rectangular frame of the region detection result. An operation of changing the position of the result can be performed (see the lower part of FIG. 4). The CPU 31 of the PC 3 that has received the position change operation updates the position information according to the received operation content (corrects the coordinates of the position information), and uses the updated position information as change information from the USB communication unit 33 to the monitor 1. Send. However, instead of updating the position information on the PC 3, the CPU 31 of the PC 3 may transmit the contents of the received position change operation to the monitor 1 as change information.

  The MPU 11 of the monitor 1 that has received the change information from the PC 3 by the USB communication unit 13 updates the position information stored in the memory 12 based on the received change information. (When the position information updated by the PC 3 according to the position change operation is transmitted to the PC 1 as the change information, the monitor 1 may overwrite the received change information on the position information stored in the memory 12. The PC 3 has the position. When the contents of the change operation are transmitted as change information to the PC 1, the monitor 1 corrects the coordinates of the position information stored in the memory 12 according to the received change information.) Thereafter, the monitor 1 is updated. Based on the position information, the MPU 11 performs processing such as table switching of the LUT 16. The monitor 1 repeatedly performs the area detection process by the area detection processing unit 15, but when the position information in the memory 12 is updated according to the change information from the PC 3, the area detection process is not performed and the update is performed thereafter. Use location information. The monitor 1 resumes the area detection process by the area detection unit 15 when an instruction to resume the area detection process is given from the PC 3.

  FIG. 5 is a flowchart showing a procedure for accepting a position change operation for the area detection result by the PC 3. First, the CPU 31 of the PC 3 determines whether or not a menu for adjusting the area detection result in the utility program of the monitor 1 is selected by a user operation (step S1), and the adjustment of the area detection result is not selected. In this case (S1: NO), the process waits until adjustment of the area detection result is selected. When the adjustment of the area detection result is selected (S1: YES), the CPU 31 transmits a transmission request for the position information of the area detection result to the monitor 1 through the USB communication unit 33 (step S2).

  Next, the CPU 31 determines whether or not the position information from the monitor 1 has been received (step S3). When the position information has not been received (S3: NO), the CPU 31 stands by until the position information is received. When the position information is received (S3: YES), the CPU 31 obtains the coordinates of the area detected with reference to the received position information, and performs highlighting such as superimposing a rectangular frame according to the coordinates. (Step S4).

  Thereafter, the CPU 31 determines whether or not a position change operation has been performed on the region detection result using an input device such as the mouse 6 (step S5). If the position change operation has not been performed (S5: NO), step 31 is performed. The process returns to S4, and the highlighting is continued. When the position change operation is performed (S5: YES), the CPU 31 generates change information for changing the position information based on the received operation contents of the position change operation (step S6), and the generated change information is displayed. The data is transmitted to the monitor 1 by the USB communication unit 33 (step S7), and the position change operation acceptance process is terminated. The generation of the change information or the transmission to the monitor 1 may be performed every time the position change operation is performed, or may be performed when an instruction to end the adjustment work is given from the user.

  FIG. 6 is a flowchart showing a procedure of position information update processing by the monitor 1. First, the MPU 11 of the monitor 1 determines whether or not the USB communication unit 13 has received a position information transmission request from the monitor 1 (step S11), and if it has not received a position information transmission request (S11). : NO), and waits until a position information transmission request is received. When the position information transmission request is received (S11: YES), the MPU 11 stops the region detection process by the region detection unit 15 (step S12). Next, the MPU 11 reads the position information stored in the memory 12 (step S13), gives the read position information to the USB 13, and transmits it to the PC 3 (step S14).

  Thereafter, the MPU 11 determines whether or not the change information from the PC 3 has been received by the USB communication unit 13 (step S15). If the change information has not been received (S15: NO), the change information is received. Wait until When the change information is received (S15: YES), the MPU 11 updates the position information stored in the memory 12 based on the received change information (step S16), and ends the position information update process.

  In the display system having the above configuration, the PC 3 that outputs an image to be displayed on the monitor 1 acquires the position information of the area detection result stored in the memory 12 of the monitor 1, and the area is input by an input device such as the mouse 6. A position change operation as a detection result is received from the user, and change information created based on the received operation content is transmitted to the monitor 1. The monitor 1 updates the position information stored in the memory 12 based on the change information from the PC 3, and performs image processing for each area such as switching the table of the LUT 16 based on the updated position information. Thus, even if an error occurs in the result of the area detection processing performed by the area detection unit 15 of the monitor 1, the user can adjust the result of the area detection using the mouse 6 of the PC 3, etc. Display image quality can be improved.

  The monitor 1 repeatedly performs the area detection process by the area detection unit 15, but stops the area detection process after receiving the change information from the PC 3 and updating the position information of the memory 12. Thus, after the position information stored in the memory 12 of the monitor 1 is updated based on the user's position change operation, the area detection unit 15 of the monitor 1 performs automatic area detection processing, and the position of the memory 12 It is possible to prevent the information from being further updated. Moreover, when accepting the user's position change operation, the user can easily change the position of the detected area by highlighting the result of the area detection based on the position information.

  In the present embodiment, the apparatus that outputs image data to the monitor 1 is the PC 3. However, the present invention is not limited to this and may be another apparatus. In addition, the monitor 1 and the PC 3 are configured to transmit and receive information such as position information and change information via the USB cable. However, the present invention is not limited to this, and may be configured to transmit and receive information using other communication methods. The communication method may be either wired or wireless. Further, the format of the position information shown in FIG. 3 is an example, and the present invention is not limited to this. FIG. 4 shows an example in which highlighting is performed by superimposing rectangular frames. However, the highlighting method is not limited to this. For example, the brightness or color of each region is changed and displayed. Alternatively, blinking display may be performed for each region, the icon shape of the mouse pointer 61 may be changed for each region, or another method may be used.

  In addition, the area detection unit 15 of the monitor 1 is configured to detect a window or pop-up window area based on a horizontal line segment and a vertical line segment, but the area detection algorithm is not limited to this. The detection target is not limited to the window. For example, the area detection unit 15 may detect a monochrome area included in the color image. In this case, for example, it is determined whether or not the length of continuous monochrome pixels in the horizontal direction and the vertical direction exceeds a threshold value. The monochrome area can be detected by a method such as

(Modification)
In the display system, the size (resolution) of the image output from the PC 3 may be different from the size of the image that can be displayed on the display unit 18 of the monitor 1. In such a case, the monitor 1 needs to enlarge or reduce the image given from the PC 3 and display it on the display unit 18. For example, the monitor 1 may display an image subjected to enlargement or reduction image processing in the image input unit 14. This is given to the detection unit 15. Since the area detection unit 15 performs area detection on the enlarged or reduced image, the position information generated as a detection result is information indicating the position (coordinates) in the enlarged or reduced image.

  When a transmission request for position information is given from the PC 3 for the position change operation, the MPU 11 of the monitor 1 reads the position information from the memory 12 and changes the position information according to the magnification of the enlargement or reduction by the image input unit 14. The coordinates are corrected to a value suitable for the image size of the PC 3, and the corrected position information is transmitted to the PC 3. Since the change information generated by the PC 3 is in accordance with the image size of the PC 3, when the change information is received from the PC 3, the MPU 11 of the monitor 1 responds to the enlargement or reduction magnification by the image input unit 14. Then, the received change information is corrected to a value suitable for the image size of the monitor 1, and the position information stored in the memory 12 is updated based on the corrected change information.

  As described above, even if the image size of the PC 3 is different from the image size of the monitor 1 and the image input unit 14 of the monitor 1 changes the size of the image, the MPU 11 of the monitor 1 can change according to the size change magnification. The position information is corrected and transmitted to the PC 3, and the received change information is corrected and the position information is updated, whereby the position change operation of the region detection result by the PC 3 as described above can be accepted.

(Embodiment 2)
As described above, in the window detection process performed by the area detection unit 15 of the monitor 1, a plurality of edge pixels continuous in the horizontal direction or the vertical direction in the input image are detected as an edge pixel group, and the length of the edge pixel group is detected. Is determined to be greater than or equal to a threshold value, and a horizontal line segment or a vertical line segment is detected. The region detection unit 15 determines whether the distance between two horizontal line segments or vertical line segments is equal to or greater than a threshold value, and detects a horizontal line segment pair or a vertical line segment pair. The area detection unit 15 detects a window based on these detection results. However, when the position change operation for the area detection result is performed by the PC 3, the threshold used for the above detection may not be appropriate.

  Therefore, in the display system according to the second embodiment, when the position change operation is performed on the PC 3 and the position information of the monitor 1 is updated, the MPU 11 of the monitor 1 uses various conditions ( Processing for updating the threshold value). 7 and 8 are schematic diagrams for explaining threshold update processing performed by the monitor 1 according to the second embodiment. FIG. 7A shows an example of a horizontal direction line segment and a vertical direction line segment detected by the area detection unit 15. In the illustrated example, the region detection unit 2 detects edge pixel groups having a length equal to or longer than the threshold TH as horizontal line segments Y1 and Y2 with respect to the threshold value TH for detecting the horizontal line segment. Edge pixel groups Y1a and Y2a having a length less than TH are not detected as horizontal line segments.

  FIG. 7B shows an example of a detection result of the window based on the horizontal line segment and the vertical line segment detected in FIG. 7A. In the illustrated example, the region detection unit 15 detects two windows 1 and 2. Here, as indicated by an arrow in FIG. 7C, it is assumed that the position change operation for the area detected as the window 2 is performed on the PC 3. In the illustrated example, a position changing operation for reducing the detection area of the window 2 in the horizontal direction is performed. In this case, it may be appropriate to detect the edge pixel groups Y1a and Y2a indicated by lines in the drawing as horizontal line segments.

  Therefore, the MPU 11 of the monitor 1 updates the threshold for region detection when the region detection result is changed and the position information is updated. As shown in FIG. 8E, for example, when the region detection result is reduced in the horizontal direction, the MPU 11 decreases the threshold TH for detecting the horizontal line segment. Thereby, the area detection unit 15 can detect the edge pixel groups Y1a and Y2a that are not detected in FIG. 7A as horizontal line segments. The reduction amount of the threshold value TH is determined according to the reduction amount of the region accompanying the position change operation. For example, the reduction amount of the threshold value TH may be equal to the reduction amount of the region. FIG. 8F shows an example of a window detection result based on the horizontal line segment and the vertical line segment detected in FIG. 8E. As shown in the figure, by detecting the horizontal line segments Y1a and Y2a by decreasing the threshold TH, the area detection unit 15 detects a window that is substantially the same as the window (see FIG. 7C) changed by the position change operation by the user. can do.

  In the above description, only the threshold value TH for detecting the horizontal line segment is shown as an example. Similarly, for the threshold value for detecting the vertical line segment, the detection result is changed in the vertical direction by the position change operation. What is necessary is just to increase / decrease a threshold value when enlarged / reduced. Similarly, not only the threshold value for detecting the horizontal line segment and the vertical line segment, but also the threshold value for detecting the horizontal line pair and the vertical line segment pair, the detection result is enlarged / reduced. In some cases, the threshold may be increased / decreased.

  Similarly, in the pop-up window detection process, the region detection unit 15 determines whether the length of the edge pixel group is within a predetermined range in order to detect the short vertical line segment and the short horizontal line segment. Determine. When the user performs a position changing operation on the detection result of the pop-up window on the PC 3, the MPU 11 of the monitor 1 has a predetermined range (upper limit) for the area detecting unit 15 to detect the short vertical line segment and the short horizontal line segment. Value and lower limit). For example, the MPU 11 increases / decreases the upper limit value and the lower limit value of the predetermined range when the area of the pop-up window is enlarged / reduced.

  In the window detection process and the pop-up window detection process described above, the area detection unit 15 extracts edge pixels from the input image, and sets edge pixels that are continuous in the horizontal direction or the vertical direction as edge pixel groups. At this time, for example, when a small number of non-edge pixels are included in the middle of a plurality of edge pixels that are continuous in the horizontal direction or the vertical direction, the edge pixel group is divided and shortened. There is a risk that it will not be detected as minutes. Therefore, even if the non-edge pixel is included in the middle of the continuous edge pixel group, the region detection unit 15 divides the edge pixel group if the number of continuous non-edge pixels is less than the threshold value. It is good also as a structure handled as one edge pixel group, without doing.

  In this configuration, the larger the threshold value compared with the number of consecutive non-edge pixels, the more difficult the edge pixel group is divided, so that a long edge pixel group is detected. Conversely, as the threshold value is smaller, the edge pixel group is more likely to be divided, and thus a short edge pixel group is detected. Therefore, the MPU 11 of the monitor 1 can be configured to increase / decrease this threshold when the PC 3 performs a position change operation on the region detection result and the region is enlarged / reduced.

  As described above, in the display system according to the second embodiment, when the user performs a position change operation on the PC 3 and the change information is transmitted from the PC 3 to the monitor 1, the MPU 11 of the monitor 1 stores the position information in the memory 13. And a predetermined condition (such as a threshold) used by the region detection unit 15 for the region detection process is updated. For updating the predetermined condition, a threshold value or the like may be adjusted according to the enlargement / reduction of the area so that the area whose position is changed by the user's position changing operation can be detected. Thus, after the user performs a position change operation on the PC 3, it is possible to detect the area desired by the user even in the area detection processing by the area detection unit 15 of the monitor 1.

(Embodiment 3)
The PC 3 is a general-purpose computer, and the user can select and use various application programs recorded in the HDD 36. Further, the image displayed on the display unit 18 of the monitor 1 has various window numbers, window designs, and the like depending on application programs executed on the PC 3. Therefore, in the display system according to the third embodiment, when the application program used by the user is switched on the PC 3 (for example, when the application program is activated or the application program of the active window is switched), The area detection unit 15 of the monitor 1 switches conditions such as a threshold used for the area detection process.

  The PC 3 according to the third embodiment stores area detection conditions in the HDD 36 in advance for each application program, and when the application program is switched by the user's operation of the keyboard 5 or the mouse 6 or the like, the switched application program The USB communication unit 33 notifies the monitor 1 of the switching of the application program and transmits the read condition. In the monitor 1 that has received the application program switching notification by the USB communication unit 13, the MPU 11 gives the condition received together with the notification to the area detection unit 15. Thereafter, the region detection unit 15 performs region detection processing using the conditions given from the MPU 11.

  The area detection condition for each application program may be stored in advance in the memory 12 of the monitor 1. In the case of this configuration, the PC 3 notifies the application program name and the like to the monitor 1, and the monitor 1 reads the condition from the memory 12 in response to this notification and performs area detection processing.

  FIG. 9 is a flowchart illustrating a procedure of area detection condition update processing performed by the PC 3 according to the third embodiment. The CPU 31 of the PC 3 determines whether or not the application program to be executed has been switched in response to an input from the keyboard 5 or the mouse 6 (step S21). If the switching has not been performed (S21: NO) ), Wait until the switch is made. When the application program is switched (S21: YES), the CPU 31 reads out area detection conditions suitable for the application program executed on the PC 3 from the HDD 36 (step S22), and the USB communication unit 33 sends the monitor 1 to the monitor 1. While notifying the switching of the application program, the read area detection condition is transmitted to the monitor 1 (step S23), and the process ends.

  FIG. 10 is a flowchart illustrating a procedure of region detection condition update processing performed by the monitor 1 according to the third embodiment. The MPU 11 of the monitor 1 determines whether or not the application communication switch notification is received from the PC 3 by the USB communication unit 13 (step S31). If the switch notification is not received (S31: NO), the switch notification is sent. Wait for reception. When the application program switching notification is received (S31: YES), the MPU 11 receives and acquires the region detection condition transmitted from the PC 3 together with the switching notification by the USB communication unit 11 (step S32). Is supplied to the region detection unit 15 to update the region detection condition (step S33), and the process is terminated.

  The display system according to the third embodiment having the above configuration can update the area detection conditions used in the area detection process of the area detection unit 15 of the monitor 1 in accordance with the application program executed on the PC 3. Therefore, the accuracy of area detection can be improved, and the display quality of the monitor 1 can be improved. This is particularly useful in an environment in which an application program having an extremely thin window border (edge) and an application having an extremely thick window border are used together. When the monitor 1 updates the area detection condition for each application program, the updated content may be reflected in the area detection condition stored in the HDD 36 of the PC 3.

(Embodiment 4)
FIG. 11 is a block diagram illustrating a configuration of a display system according to Embodiment 4. The display system according to Embodiment 4 includes a plurality of monitors 1 and PCs 3, each PC 3 has a function of communicating via a wired or wireless network, and the plurality of PCs 3 are connected to a common network 8. It is a configuration. The display system according to the fourth embodiment includes a server device 9, and this server device 9 can communicate with a plurality of PCs 3 via the network 8.

  The server device 9 includes a CPU 91, a communication unit 92, an HDD 93, an input unit 94, a display unit 95, and the like. The CPU 91 executes various programs stored in advance in the HDD 93, thereby executing control processes for various units in the PC 3 and various arithmetic processes. In particular, the CPU 91 of the server device 9 according to the present embodiment performs management processing for a plurality of monitors 1 and PCs 3 connected via the network 8. The communication unit 92 is connected to the network 8 and transmits / receives data to / from the PC 3 according to the control of the CPU 91 (note that although not shown in FIG. 1, the PC 3 includes a similar communication unit). )

  The HDD 93 is a large-capacity magnetic storage device and stores various programs and data. For example, the server device 9 stores data received through communication with the PC 3 in the HDD 93. The input unit 94 includes an input device such as a mouse or a keyboard, and is used when the administrator of the display system operates the server device 9. The display unit 95 is a liquid crystal panel, a PDP, or the like, and may be provided integrally with the main body of the server device 9 or may be provided separately (similar to the monitor 1). .

  Each PC 3 in the fourth embodiment can acquire the conditions used by the area detection unit 15 of the connected monitor 1 for the area detection process. For example, the CPU 31 of the PC 3 gives an area detection condition transmission request from the USB communication unit 33 to the monitor 1 periodically or in response to a request from the server device 9. The MPU 11 of the monitor 1 that has received this transmission request by the USB communication unit 13 acquires the region detection condition from the region detection unit 15 and sends it to the USB communication unit 13 to transmit to the PC 3. The CPU 31 of the PC 3 that has received the area detection condition from the monitor 1 by the USB communication unit 33 transmits the area detection condition to the server device 9 via the network 8.

  The server device 9 receives and collects area detection conditions from each PC 3 and stores them in a hard disk or the like. For example, the server device 9 determines whether or not there is a condition in which the content is remarkably changed (for example, a condition in which the amount of change in the threshold exceeds a predetermined amount) with respect to the default area detection condition, and detection of the area that has been significantly changed The average value, minimum value or maximum value of the condition is calculated. The server device 9 transmits the calculated average value, minimum value, maximum value, or the like to each PC 3 as a new area detection condition.

  The CPU 31 of the PC 3 that has received the area detection condition from the server apparatus 9 gives an instruction to update the area detection condition to the monitor 1 through the USB communication unit 33 and transmits the area detection condition from the server apparatus 9. The MPU 11 of the monitor 1 that has received the update instruction of the area detection condition from the PC 3 by the USB communication unit 13 gives the area detection condition received together with the update instruction to the area detection unit 15. Thereafter, the region detection unit 15 performs region detection processing using the conditions given from the MPU 11.

  FIG. 12 is a flowchart illustrating a procedure of region detection condition update processing performed by the PC 3 according to the fourth embodiment. The CPU 31 of the PC 3 determines whether or not the timing for obtaining the area detection condition has been reached, such as when receiving a periodic timing or a request from the server device 9 (step S41). When it is determined that the acquisition timing of the area detection condition has been reached (S41: YES), the CPU 31 gives a transmission request for the area detection condition to the monitor 1 through the USB communication unit 33 (step S42).

  Next, the CPU 31 determines whether or not the USB communication unit 33 has received the region detection condition from the monitor 1 (step S43). If the region detection condition has not been received (S43: NO), the region detection condition is determined. Wait until you receive When the area detection condition is received (S43: YES), the CPU 31 transmits the area detection condition to the server device 9 (step S44) and returns the process to step S41.

  If the CPU 31 determines that the timing for acquiring the area detection condition has not been reached (S41: NO), the CPU 31 further determines whether or not the area detection condition from the server device 9 has been received (step S45). When the area detection condition is received (S45: YES), the CPU 31 gives an instruction to update the area detection condition to the monitor 1 through the USB communication unit 33 and transmits the area detection condition from the server device to the monitor 1 (step S1). S46), the process is returned to step S41. If the area detection condition is not received (S45: NO), the CPU 31 returns the process to step S41. The CPU 31 repeatedly performs the above processing.

  FIG. 13 is a flowchart illustrating a procedure of region detection condition update processing performed by the monitor 1 according to the fourth embodiment. The MPU 11 of the monitor 1 determines whether or not the USB communication unit 13 has received an area detection condition transmission request from the PC 3 (step S51). When the transmission request is received (S51: YES), the MPU 11 acquires the region detection condition from the region detection unit 15 (step S52), and transmits the acquired region detection condition to the monitor 1 by the USB communication unit 13 (step S52). S53), the process returns to step S51.

  When the area detection condition transmission request is not received from the PC 3 (S51: NO), the MPU 11 further determines whether or not the USB communication unit 13 has received the area detection condition update instruction from the PC 3 (step S54). ). When the update instruction is received (S54: YES), the MPU 11 acquires the area detection condition transmitted from the PC 3 together with the update instruction (step S55), and gives the acquired area detection condition to the area detection unit 15 to obtain the area detection condition. The detection condition is updated (step S56), and the process returns to step S51. When the update instruction has not been received (S54: NO), the MPU 11 returns the process to step S51. The MPU 11 repeats the above processing.

  FIG. 14 is a flowchart illustrating a procedure of region detection condition update processing performed by the server device 9 according to the fourth embodiment. The server device 9 determines whether or not the region detection condition transmitted from the PC 3 has been received (step S61). If the region detection condition has not been received (S61: NO), the server device 9 receives the region detection condition. Wait until. When the area detection condition is received (S61: YES), the server device 9 stores the received area detection condition in a hard disk or the like (step S62).

  Further, the server device 9 determines whether or not the stored region detection condition has changed significantly with respect to the default region detection condition (step S63). If it is determined that the area detection condition has not changed significantly (S63: NO), the server device 9 returns the process to step S61. When it is determined that the area detection condition has changed significantly (S63: YES), the server device 9 calculates the average value or the maximum value of the area detection conditions received from the plurality of PCs 3 (step S64), and sets the calculated result as a new value. The area detection condition is transmitted to each PC 3 (step S65), and the process returns to step S61.

  In the display system according to the fourth embodiment having the above-described configuration, the server device 9 collects area detection conditions such as threshold values used for the area detection process of the area detection unit 15 of each monitor 1, and an average value of a plurality of area detection conditions. In this configuration, the area detection process of each monitor 1 is updated by calculating the minimum value or the maximum value and transmitting the calculated value to each PC 3. With this configuration, when the area detection condition is updated in one monitor 1 and the PC 3, this update can be reflected in the area detection process of another monitor 1 in the display system. In the present embodiment, the server device 9 is configured to calculate an average value, a minimum value, a maximum value, or the like and transmit it to each PC 3 when the area detection condition changes significantly. However, the present invention is not limited to this. Even if there is no significant change in the area detection condition, for example, an average value, minimum value, maximum value, or the like of the area detection condition may be periodically calculated and transmitted to each PC 3.

1 Monitor (display device)
3 PC (image output device)
5 Keyboard 6 Mouse (reception means)
8 Network 9 Server device 11 MPU (Image processing means, update means, predetermined condition update means)
12 Memory (storage unit)
13 USB communication unit 14 Image input unit (size changing means)
15 Area detection unit (area detection means)
16 LUT (image processing means)
17 drive unit 18 display unit 31 CPU (acquisition unit, generation unit, information output unit, processing unit, switching notification unit, predetermined condition acquisition unit, common predetermined condition reception unit, common predetermined condition output unit)
32 Image output unit (image output means)
33 USB communication unit (acquisition means, information output means, switching notification means)
34 Input I / F part (reception means)
35 RAM
36 HDD
91 CPU (predetermined condition receiving means, common predetermined condition generating means, predetermined condition transmitting means)
92 Communication unit (predetermined condition receiving means, predetermined condition transmitting means)
93 HDD

Claims (9)

A display unit that displays an image, a region detection unit that detects a region that satisfies a predetermined condition in the image displayed on the display unit, a storage unit that stores position information of the region detected by the region detection unit, and a storage unit that stores the position information A display system comprising: a display device having image processing means for performing predetermined image processing on the region related to the position information; and an image output device having image output means for outputting an image to be displayed to the display device. And
The image output device includes:
Obtaining means for obtaining position information stored in the storage unit;
Accepting means for accepting a change operation of the area related to the position information obtained by the obtaining means;
Generating means for generating change information relating to the position of the region in response to a change operation received by the receiving means;
Information output means for outputting the change information generated by the generating means to the display device,
The display system includes an updating unit that updates position information stored in the storage unit in accordance with change information output by the information output unit of the image output device. The area detecting means of the display device is
Repeat the area detection process,
2. The display system according to claim 1, wherein the region detection process is stopped after the update unit updates the position information. The display device has size changing means for enlarging or reducing the horizontal width and / or vertical width of the image output by the image output device at a predetermined magnification,
The update unit is configured to update the position information stored in the storage unit in accordance with the change information output by the information output unit of the image output device and the predetermined magnification. Item 3. A display system according to item 1 or item 2. The display system according to any one of claims 1 to 3, further comprising: a unit that highlights an area related to position information stored in the storage unit. The image output device includes:
Processing means for performing processing for generating an image output by the image output means by execution of a program;
A switching notification means for notifying the display device of switching when a program executed by the processing means is switched;
The region detection means of the display device updates the predetermined condition in response to the notification from the image output device. Display system described. The area detection unit of the display device updates the predetermined condition according to change information output by the information output unit of the image output device. The display system according to any one of the above. A plurality of the display device, the image output device, and a server device;
Each image output device includes a predetermined condition acquisition unit that acquires the predetermined condition from the display device, and transmits the predetermined condition acquired by the predetermined condition acquisition unit to the server device.
The server device
Predetermined condition receiving means for receiving the predetermined condition transmitted by the image output device;
Common predetermined condition generating means for generating a predetermined condition common to the plurality of image output devices based on one or more predetermined conditions received by the predetermined condition receiving means;
A predetermined condition transmitting means for transmitting the common predetermined condition generated by the predetermined condition generating means to the plurality of image output devices;
Each image output device
Common predetermined condition receiving means for receiving the common predetermined condition transmitted by the predetermined condition transmitting means of the server device;
A common predetermined condition output means for outputting the common predetermined condition received by the common predetermined condition receiving means to the display device;
The display device includes predetermined condition update means for updating a predetermined condition used for area detection by the area detection means in accordance with a common predetermined condition output by the common predetermined condition output means of the image output device. The display system according to claim 6. A display unit that displays an image, a region detection unit that detects a region that satisfies a predetermined condition in the image displayed on the display unit, a storage unit that stores position information of the region detected by the region detection unit, and a storage unit that stores the position information An image output device including an image output unit that outputs an image to be displayed on the display unit to the display device with respect to a display device having an image processing unit that performs predetermined image processing on an area related to the positional information. There,
Obtaining means for obtaining position information stored in the storage unit;
Accepting means for accepting a change operation of the area related to the position information obtained by the obtaining means;
Generating means for generating change information relating to the position of the region in response to a change operation received by the receiving means;
An image output device comprising: information output means for outputting the change information generated by the generation means to the display device. A display unit for displaying an image; a region detection unit for detecting a region satisfying a predetermined condition in the image displayed on the display unit; a storage unit for storing position information of the region detected by the region detection unit; An image processing unit that performs predetermined image processing on an area related to position information stored in a unit,
Means for inputting and outputting information to and from other devices;
Means for outputting position information stored in the storage unit to the other device;
A display device comprising: update means for updating position information stored in the storage unit in accordance with change information input from the other device.

Images