JP5259032B2 - Image processing device - Google Patents

Description

  The present invention relates to an image processing apparatus, and more particularly to an image processing apparatus characterized by a setting control portion of a monitor screen.

  2. Description of the Related Art In recent years, endoscope apparatuses that insert an insertion part into a body cavity, image an observation site with an imaging device provided at the distal end of the insertion part, display an endoscopic image on a monitor, and perform diagnosis / examination of the affected part are widely used. It has become like this.

  Conventionally, when performing diagnosis / inspection by a plurality of users, a high-quality monitor for lesion inspection and a sub-monitor for confirmation are often provided so that each person can easily see.

Problems to be solved by the invention

  At that time, since each user's preference / diagnosis method for viewing each monitor is different, it is necessary to be able to set detailed video signal parameters separately for each monitor.

  Also, when setting video signal parameters on the setting screen during diagnosis, if the parameter setting screen is displayed on both monitors, the subject image will not be displayed, so the diagnosis will be interrupted and the accuracy and efficiency of the diagnosis will be reduced. It was a falling problem.

  Furthermore, there has been a strong demand from users to make it possible to easily cope with high-quality recording equipment used for early detection of lesions.

  Further, when adding a function of an endoscope apparatus, since there is no means for determining whether a substrate has been added, it is necessary to disassemble the apparatus and confirm it, which is a difficult operation.

  In addition, the item dedicated to high-quality video output on the setting screen does not display that the setting cannot be disabled when the additional board is not mounted, resulting in a misunderstanding to the user.

  Furthermore, when using an HDTV high image quality and large screen monitor with high image quality output, it has been desired that the user can set the following two usage methods.

(1) Although the image quality is high, the magnification rate of the subject image remains the SDTV size. Until now, users have become accustomed to observing subject images on an SDTV-sized monitor, so there are some users whose eyes tend to get tired when the HDTV-sized screen is enlarged.

(2) There is a user who attaches high importance to HDTV size / lesion finding in the high image quality and the enlargement rate of the subject image.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image processing apparatus that can set video signal parameters separately for a high-quality monitor and a sub-monitor, and can improve the efficiency of diagnosis and inspection. It is said.

Means for solving the problem

[Means for Solving the Problems]
An image processing apparatus according to the present invention performs image processing on an imaging signal of a subject image obtained from an endoscope and outputs the image signal as a video signal. A first image processing unit for obtaining a video signal corresponding to the first resolution in a first monitor having a size and a first resolution; and performing image processing on the imaging signal to obtain the first monitor A video signal corresponding to the second resolution is obtained in a second monitor having a second monitor screen size that is a larger monitor screen size and having a second resolution that is higher than the first monitor . and second image processing unit, the observation screen size before Symbol second monitor, the first to be displayed by the first observation screen size corresponding to the monitor screen size in the first monitor Over de and, the second mode for displaying the second observation screen size corresponding to the monitor screen size in the second monitor, selectively both sets, said first monitor and the second monitor The magnification of the observation screen displayed on the first monitor or the second monitor is changed based on the operation signal from the magnification setting operation means for switching the magnification of the observation screen displayed on the screen. Screen size setting means for controlling the first image processing section or the second image processing section so that the first image processing section is displayed, and when the screen size setting means is set to the first mode, Controlling the first image processing unit to display the observation screen size displayed on the first monitor by switching the enlargement ratio in accordance with an operation signal from the enlargement ratio setting operation means, and The observation screen size displayed on the second monitor is displayed only in an area having the same size as the first observation screen size, and the area is enlarged according to an operation signal from the enlargement ratio setting operation means. When the second image processing unit is controlled to switch and display the rate and set to the second mode, the observation screen size displayed on the second monitor is set to the second observation screen. The second image processing unit is controlled to display according to the size and to switch and display the enlargement factor according to an operation signal from the enlargement factor setting operation means.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 7 relate to an embodiment of the present invention, FIG. 1 is a block diagram showing the configuration of the endoscope apparatus, FIG. 2 is a diagram showing the configuration of the front panel of FIG. 1, and FIG. 4 is a diagram showing an example of a user setting screen displayed by the image processing apparatus, FIG. 4 is a diagram showing a modification of the user setting screen displayed by the image processing apparatus in FIG. 1, and FIG. 5 is an operation of the image processing apparatus in FIG. FIG. 6 is a second diagram illustrating the operation of the image processing apparatus of FIG. 1, and FIG. 7 is a diagram illustrating an example of a system setting screen displayed by the image processing apparatus of FIG. .

  As shown in FIG. 1, the endoscope apparatus according to the present embodiment performs image processing on an imaging signal sent from an endoscope 1 that captures a subject image and a CCD 1 a in the endoscope 1 and is equivalent to an SDTV or an HDTV. The image processing device 2 is converted to a video signal and sent to the SDTV monitor 3, HDTV monitor 5 or recording device 4, 6, and the light source device 7 that supplies illumination light to the endoscope 1. Here, the recording devices 4 and 6 refer to a VTR, a printer, a filing device, a photography device, and the like.

  The image processing apparatus 2 includes an analog video processing circuit 11 that performs processing such as CDS and clamp processing on analog signals sent from the CCD in the endoscope 1, and analog-digital conversion of the output of the analog video processing circuit 11. / D circuit 12, insulation circuit 13 that performs insulation processing on the output of A / D circuit 12 using a photocoupler, transformer, etc., color adjustment circuit 14 that adjusts the levels of R, G, and B signals, and G signal Is a white balance circuit 15 that performs white balance processing, and a gamma correction circuit 16 that performs gamma correction.

  The image processing apparatus 2 includes a freeze circuit 20, an enlargement / reduction circuit 21, an enhancement processing circuit 22, a mask circuit 23, a character synthesis circuit 24, a graphic IC 25, a VRAM 26, a color bar circuit 27, a selector 28, an encoder 29, a D / D A conversion circuit 30, buzzer 31, WDT (watchdog timer) 32, transmitter 33, CPU 34, address decoder 35, ROM 36, RAM 37, RTC 38, BackUP RAM 39, SIO 40, PIO 41, and the like are provided.

  Specifically, the freeze circuit 20 performs color misregistration correction and freezes the image.

  The enlargement / reduction circuit 21 enlarges or reduces the image.

  The enhancement processing circuit 22 performs enhancement processing such as structure enhancement, contour enhancement, and IHb enhancement, and RGB synchronization processing.

  The mask circuit 23 performs mask processing (for example, octagonal) on the image.

  The character synthesis circuit 24 synthesizes the data created by the graphic IC 25 and outputs it.

  The graphic IC 25 is connected to endoscope-related information (patient ID, patient name, date and time, date of birth, connection status and number of recorded peripheral devices, user name, comment, STOPwatch, various setting screens, and other endoscopes or connected. Recording device or monitor operating status and setting status).

  The VRAM 26 is a buffer (DRAM, FIFO, ROM, etc.) used for character synthesis.

  The color bar circuit 27 displays a color bar or a white screen.

  The selector 28 selects an observation image or color bar in which characters are synthesized.

  The encoder 29 converts the RGB signal into a Y / C or NTSC signal.

  The D / A conversion circuit 30 performs digital-analog conversion.

  The buzzer 31 outputs a sound when a key on the keyboard 42 or the front panel 43 is input or when an error operation of the recording devices 4 and 6 occurs.

  The CPU 34 controls each circuit in accordance with at least a key input from the keyboard 42 or the front panel 43.

  The address decoder 35 controls each circuit by generating a chip select signal from the address signal output from the CPU 34 and outputting it to each circuit.

  The BackUPRAM 38 stores data to be stored (the setting status of the front panel 43 and the keyboard 42, items set on various setting screens, etc.). Holds when power is off.

  The SIO 40 is a serial interface such as USB, IEEE 1394, or RS232C, and inputs and outputs control signals for controlling a monitor, a recording device, a keyboard, a light source device, and the like.

  The PIO 41 is a parallel interface, and inputs and outputs control signals for controlling a monitor, a recording device, a front panel, a light source device, and the like.

  Here, the SDTV monitor 3 is a monitor having, for example, 480 effective scanning lines and 720 effective samples per line. The freeze circuit 20, the enlargement / reduction circuit 21, the enhancement processing circuit 22, the mask circuit 23, the character The synthesis circuit 24, the graphic IC 25, the VRAM 26, the color bar circuit 27, the selector 28, the encoder 29, and the D / A conversion circuit 30 operate, for example, at 13.5 Mhz and 8 bits each for RGB.

  The HDTV monitor 5 is, for example, a monitor having 1080 effective scanning lines and 1920 effective samples per line. The image processing apparatus 2 includes a freeze circuit 20H, an enlargement / reduction circuit 21H, an enhancement processing circuit 22H, a mask. An additional board 51 equipped with a circuit 23H, a character synthesis circuit 24H, a graphic IC 25H, a VRAM 26H, an encoder 29H, and a D / A conversion circuit 30H can be connected. The additional board 51 operates, for example, at 74 Mhz and 10 bits each for RGB. . The connection state of the additional board 51 is taken into the CPU 34 via the PIO 41.

  Further, the endoscope 1 is provided with an identification circuit 52 for identifying the type of the endoscope 1 and is taken into the CPU 34 via the PIO 41, and the CPU 34 performs image processing according to the type of the endoscope 1. Control each of the above circuits to do so.

  FIG. 2 shows the front panel 43. When each key SW is pressed, an input signal passes through the PIO and is input to the CPU 34. The CPU 34 performs the following control based on the input signal.

  Monitor output: An image displayed on the monitor is selected by a selector (such as a relay switch after D / A conversion, not shown).

  Scope: An image captured by the endoscope 1 is displayed together with endoscope related information.

  VTR: An output image from the VTR among the recording devices 4 and 6 is displayed.

  Digital file: Displays an output image from the filing device among the recording devices 4 and 6.

  Video printer: Displays an output image from the video printer among the recording devices 4 and 6.

  Printer: Controls the printers of the recording devices 4 and 6 via the SIO 40 to perform image printout or capture processing. During processing, the LED above the switch lights up or flashes.

  Standard: A part or all of each setting data (setting data on all setting screens including a user setting screen and a system setting screen described later) set by the front panel 43 or the keyboard 42 is reset.

  Emphasis: Every time the key SW is pressed, the emphasis setting changes as 1 → 2 → 3 → 1 → 2 → 3... And the LED above the SW changes. The emphasis setting mode is set on the user setting screen shown in FIGS.

  Enlargement: Every time the key SW is pressed, the emphasis setting changes from 0 → 1 → 2 → 0 → 1 → 2... And the LED above the SW changes. The enlargement setting mode is set on the user setting screen shown in FIGS.

  Metering: Every time the key SW is pressed, the dimming mode changes from auto to peak to average to auto, and the LED above the SW changes. The CPU 34 performs light control by controlling the light source device 7 via the SIO 40 or the PIO 41.

  White balance: When the key SW is pressed, the CPU 34 controls the white balance circuit 15 to perform white balance processing. During processing, the upper LED is turned on or blinked. In the case of a processing error, the LED blinks.

  Red / Blue: Each time the key SW is pressed, the color tone to be changed is changed from OFF → red → blue, and the LED (red and blue portions) above the SW changes. When red or blue is selected, the color value is changed (controls the color adjustment circuit 14 in FIG. 1) and the upper parameter display LED is changed by the cursor key to the right.

  When the additional board 51 of FIG. 1 is connected, the connection detection signal becomes “L”, and when not connected, it becomes “H”. When the power is turned on or the standard SW is input, the CPU 34 reads the detection signal level via the PIO 41 and performs the following processing.

  When the detection signal is “H”: the “high image quality” LED in FIG. 2 is turned off. The fact that it is not connected is displayed on the monitor (may be displayed for a certain period of time when the power is turned on).

  Items to be set only on the additional board in the user setting screen (for example, ENHANCE IhbCe, IHb, ImageSize HDMode, HD in FIG. 3 and FIG. 4, HDTV Setting in FIG. 7, ReleaseTime HDTV, etc.) display gray processing, etc. In addition to making changes, skip when moving the cursor so that settings cannot be made.

  When the detection signal is “L”: the “high image quality” LED in FIG. 2 is turned on. The connection is displayed on the monitor (may be displayed for a certain period of time when the power is turned on).

  In the user setting screen, items to be set only with the additional board 51 can be set.

  3 and 4 show examples of user setting screens. In this screen, items to be set by the user when used can be set on one screen, and the setting data can be stored in the Backup RAM 39, so that it can be saved even when the power is turned off. In addition, data can be easily managed, changed, and read by storing data for each user name. The setting items are as follows.

  User: User name registration.

  ScopeSwitch: Sets a function to be performed when the SW (not shown) provided in the endoscope 1 is pressed.

  Enhancement: Structure emphasis or outline emphasis (Str. 1) for each of the emphasis modes 1, 2, and 3 that are changed when the emphasis key SW is input on the front panel 43 or when Enhance is set by pressing ScopeSwitch and the Scope SW is pressed. (Display location) and IhbCE parameters are set.

  ImageSlze: Sets the size of the observation image displayed on the monitor. Each time the enlargement key SW on the front panel or the image size key (not shown) on the keyboard is pressed, the set size is alternately switched (in this example, the full size and the medium size are switched).

  HDMode: The enlargement size of the screen displayed on the monitor 5 is changed.

  SD: Sets the enlargement size of the monitor 3 (SDTV monitor).

  HD: The enlargement size of the monitor 5 (HDTV monitor) is set (the enlargement size can be set for each of the monitor 3 and the monitor 5).

  Help message area: An explanation, auxiliary information, input method, and the like regarding the selected setting item are displayed by a cursor movement key (not shown) on the keyboard.

  5 and 6 show an example of setting by HDMode. FIG. 5 shows an enlarged size when HDMode = Normal1. Both the monitor 3 (SDTV monitor) and the monitor 5 (HDTV monitor) have the same enlargement size.

  As a result, even if a user who has used an SDTV monitor uses an HDTV monitor, the same enlargement size can be used, so that it can be used without a sense of incongruity, and can occur during long-term use when the enlargement size is too large. It is possible to prevent a decrease in diagnosis rate due to fatigue.

  FIG. 6 shows an enlarged size when HDMode = Large. Since the monitor 5 (HDTV monitor) has a larger screen than the monitor 3 (SDTV monitor), the monitor 5 (HDTV monitor) has an enlarged size capable of displaying an observation image on the entire screen.

  As a result, the observation image can be enlarged to improve the diagnostic efficiency of the lesion.

  ImageControl: Iris, Control: Light control and contrast settings.

  Enh. Type: Strength Str. Change the setting of the part. Switching between structure enhancement 1, 2 (Str. 1, Str. 2) and edge enhancement (Edge) is performed. The display above the parameter setting is also switched.

  FIG. 7 shows an example of the system setting screen. This screen has multiple pages and displays the page number at the top of the screen. Pages can be switched by a single input by a page switching key (not shown) on the keyboard. By storing the setting data in the BackUPRAM 39, it can be saved even when the power is turned off, and data can be easily managed, changed, read out, and automatically set.

  HDTVSetting: MON.

  SCOPE: Selects the signal type (RGB, Y / C, NTSC) of the image to be displayed on the monitor 5 (HDTV monitor).

  Display: Select a monitor that displays various setting screens (system setting screen, user setting screen, and all other setting screens related to the settings of the apparatus).

  SDTV: A setting screen is displayed only on the monitor 3 (SDTV monitor).

  HDTV: A setting screen is displayed only on the monitor 5 (HDTV monitor).

  HDTV + SDTV: Display the setting screen on monitor 5 + monitor 3.

  From this setting, the CPU 34 controls the graphic IC 25 and the character synthesis circuit 24 to control display of various setting screens.

  Patent, Data: Select whether to save or delete data in the BackUPRAM 39 when the power is turned off.

  ImageRecord: SCVRemote.

  SCVCounter: Performs remote ON / OFF control of the photo photographic device and initialization of the number of shots in the recording device.

  D. FRemote: Performs remote ON / OFF control of the filing device among the recording devices.

  ReleaseTime: Sets a time to freeze an observation image when a release (recording instruction) is input by a SW (not shown) provided in the endoscope 1 (not shown) or a key SW (not shown) on the keyboard 42.

  SCV: Sets the freeze time of the observation image to be output to the photographic device among the recording devices 4 and 6.

  D. F: Sets the freeze time of the observation image to be output to the filing device among the recording devices 4 and 6. HDTV: Sets the freeze time of the observation image displayed on the monitor 3 (HDTV monitor).

  SDTV: Sets the freeze time of the observation image displayed on the monitor 5 (SDTV monitor).

  With this setting, the CPU 34 controls the freeze circuit 20 to control the freeze time.

  Thus, in this embodiment, when a plurality of users use at least a high-quality monitor for lesion examination and a sub-monitor for confirmation at the time of diagnosis, according to the preference of each user who views the monitor, Since the video signal parameters can be set separately for the high-quality monitor and the sub-monitor, the efficiency of diagnosis and inspection can be improved.

  In addition, since it can be easily applied to a high-quality recording device used for early detection of lesions, diagnostic accuracy is improved.

  Furthermore, when adding a function of the endoscope apparatus, it is possible to easily determine from the outside whether a board has been added, so that it is not necessary to disassemble the apparatus, and work efficiency can be improved.

  Further, when an HDTV high-quality and large-screen monitor with high-quality video output is used, the enlargement ratio can be easily customized according to the user's preference, reducing the burden on the user and increasing the diagnostic efficiency.

Effect of the invention

  As described above, according to the present invention, it is possible to set the video signal parameters separately for the high-quality monitor and the sub-monitor, and to improve the efficiency of diagnosis / inspection.

  The block diagram which shows the structure of the endoscope apparatus which concerns on one embodiment of this invention.   The figure which shows the structure of the front panel of FIG.   The figure which shows an example of the user setting screen displayed by the image processing apparatus of FIG.   The figure which shows the modification of the user setting screen displayed by the image processing apparatus of FIG.   FIG. 1 is a first diagram illustrating the operation of the image processing apparatus of FIG.   FIG. 2 is a second diagram for explaining the operation of the image processing apparatus of FIG.   The figure which shows an example of the system setting screen displayed by the image processing apparatus of FIG.

DESCRIPTION OF SYMBOLS 1 ... Endoscope 2 ... Image processing apparatus 3 ... SDTV monitor 5 ... HDTV monitor 4, 6 ... Recording equipment 7 ... Light source device Agent Patent attorney Susumu Ito

Claims (1)

In an image processing device that performs image processing on an imaging signal of a subject image obtained from an endoscope and outputs it as a video signal,
A first image processing unit that performs image processing on the imaging signal and obtains a video signal corresponding to the first resolution in a first monitor having a first monitor screen size and a first resolution ;
The image signal is subjected to image processing to have a second monitor screen size that is larger than the first monitor and a second resolution that is higher than the first monitor and has a second resolution. A second image processing unit for obtaining a video signal corresponding to the second resolution in the monitor;
The observation screen size before Symbol second monitor, a first mode for displaying the first observation screen size corresponding to the monitor screen size in the first monitor, depending on the monitor screen size in the second monitor And a second mode for displaying according to the second observation screen size, and for switching the enlargement ratio of the observation screen size displayed on the first monitor or the second monitor. Based on the operation signal from the enlargement ratio setting operation means, the first image processing unit or the first image display unit or the second image display section is changed so that the enlargement ratio of the observation screen size displayed on the first monitor or the second monitor is changed. Screen size setting means for controlling the two image processing units ;
With
The screen size setting means includes:
When the first mode is set, the observation screen size displayed on the first monitor is displayed by switching the magnification rate according to an operation signal from the magnification rate setting operation means. The observation screen size displayed on the second monitor is displayed only in an area having the same size as the first observation screen size, and the enlargement ratio is displayed in the area. Controlling the second image processing unit to switch and display an enlargement ratio according to an operation signal from the setting operation means;
When the second mode is set, the observation screen size displayed on the second monitor is displayed according to the second observation screen size, and the operation signal from the enlargement factor setting operation means is displayed. In accordance with the image processing apparatus, the second image processing unit is controlled so as to switch and display the enlargement ratio .

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