JP2005231488A - Diving mask, control method for display device for diving mask, control program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To consider absorption characteristic in water and to observe the peripheral circumstance (particularly colors of fishes, seaweeds, corals and rocks) in more natural color. <P>SOLUTION: The diving mask 5 is provided with a camera 5A for photographing an image. A controller 20 determines the present position of a diver and the absorption characteristic of the sunlight by peripheral water, corrects the color of the image photographed by the camera 5A in response to the determined absorption characteristic and displays the image after the color is corrected on a permeation type display panels 21R, 21L. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a diving mask, a control method for a diving mask display device, a control program, and a recording medium.

Conventional diving masks have been used to simply protect the eyes of divers in water from seawater and to ensure a safe and reliable visual field during diving.
In addition, a diving mask having a function for notifying divers of various important diving information during diving (for example, diving time, current water depth, cylinder residual pressure, bearing, body residual nitrogen amount, etc.) has been proposed ( Patent Document 1).
JP-A-5-246383

However, the diving mask described in Patent Document 1 only functions as an information display device that provides diving information, and cannot be used for the purpose of improving the visibility of the diver's surroundings in water. .
By the way, at the time of diving, absorption by sunlight water (seawater, freshwater and brackish water) varies depending on the wavelength, and as the water depth increases, it is gradually absorbed in the order of red → orange → yellow → green → blue → purple. Go. For example, even a fish that has a bright red color under the sunlight on land may appear brown at some depth.
Accordingly, an object of the present invention is to consider the light absorption characteristics in water, and to display a diving mask and a diving mask that enable observation of ambient conditions (especially, colors of fish, seaweed, coral, rocks, etc.) with more natural colors. An object is to provide an apparatus control method, a control program, and a recording medium.

In order to solve the above-described problem, the diving mask corresponds to the determined light absorption characteristic, a camera unit that captures an image, an absorption characteristic determination unit that determines the light absorption characteristic of sunlight by water around the current position of the diver, and A color correction unit that corrects the color of the image and a display unit that displays the image after correcting the color are provided.
According to the above configuration, the camera unit captures an image.
In parallel with this, the light absorption characteristic determination unit determines the light absorption characteristic of sunlight by the water around the current position of the diver. The color correction unit corrects the color of the image corresponding to the determined light absorption characteristic.
As a result, the display unit displays the image after correcting the color.
In this case, the light absorption characteristic determination unit includes a pressure detection unit that detects an ambient pressure, and a water depth calculation unit that calculates a water depth based on the ambient pressure, and the color correction unit corresponds to the water depth. The light absorption characteristic storage unit that stores the light absorption characteristic in advance may be provided, the light absorption characteristic corresponding to the water depth calculated by the water depth calculation unit may be read out, and the color of the image may be corrected.

The light absorption characteristic determination unit includes a white balance adjustment unit that generates white balance adjustment data for adjusting white balance based on an image captured by the camera unit, and the color correction unit includes the white balance adjustment data. The color of the image may be corrected based on the above.
Furthermore, the display unit may include a transmissive display device and display an image after correcting the color so as to overlap the scenery around the diver.
Furthermore, the display unit may include a reflective display device and display an image after correcting the color corresponding to the scenery around the diver.

In addition, the control method of the display device for diving masks corresponds to the imaging process of capturing an image, the light absorption characteristic determination process of determining the light absorption characteristic of sunlight by water around the current position of the diver, and the determined light absorption characteristic. A color correction process for correcting the color of the image, and a display process for displaying the image after correcting the color.
A control program for controlling a diving mask provided with a camera unit that captures an image and a display unit that displays the captured image by a computer causes the camera unit to capture an image and The light absorption characteristic of sunlight by surrounding water is discriminated, the color of the image is corrected according to the discriminated light absorption characteristic, and the image after correcting the color is displayed on the display unit. It is said.
In this case, the ambient pressure is detected, the water depth is calculated based on the ambient pressure,
The light absorption characteristic may be stored in advance corresponding to the water depth, and the color of the image may be corrected based on the light absorption characteristic corresponding to the calculated water depth.
The white balance may be adjusted based on an image captured by the camera unit to generate white balance adjustment data, and the color of the image may be corrected based on the white balance adjustment data.
The control programs may be recorded on a computer-readable recording medium.

  According to the present invention, it is possible to observe ambient conditions (particularly colors of fish, seaweed, coral, rocks, etc.) with a more natural color.

Next, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating how the diving equipment is used when the diving mask (diving mask) of the embodiment is used. Moreover, FIG. 2 is a schematic configuration explanatory diagram of the diving equipment of the embodiment.
The diving equipment 100 is roughly divided into a cylinder unit 1 having a plurality of cylinders 1A, 1B, a switching valve / regulator 2, a water depth / residual pressure gauge 3, a remote control unit 4, and a diving mask 5 having a camera 5A. And.
FIG. 2 is an external front view of the diving mask of the embodiment. FIG. 3 is a sectional view of the diving mask.
The diving mask 5 has a main body frame 5B to which a strap (not shown) is attached, and a camera 5A is disposed on the upper part of the main body frame 5B.
The main body frame 5B includes a lens frame 5C, and rigid lenses 5D and 5E are supported by the lens frame 5C.
Further, as shown in FIG. 3, a flexible skirt portion 5F made of semi-transparent rubber or plastic is attached to the main body frame 5B.

Furthermore, a nose frame 5G that covers the nose of the diver is attached to the lower part of the main body frame 5B.
A transmissive display panel 21R is disposed on the rear surface side of the rigid lens 5D, and a transmissive display panel 21L is disposed on the rear surface side of the rigid lens 5D.
The diving mask 5 includes a controller 20 that controls the whole, and the driver 22 drives the transmissive display panels 21R and 21L under the control of the controller 20.
Further, the controller 20 has a ROM 23 for storing control programs and control data in advance, a RAM 24 for temporarily storing various data, and a VRAM 25 for temporarily storing image data to be displayed on the transmissive display panels 21R and 21L. And are connected.
Further, a communication unit 26 for communicating with the remote control unit 4 and an operation unit 27 provided with operation buttons (not shown) for performing various operations by a diver who is a user are connected to the controller 20.
Further, the controller 20 performs a pressure sensor 28 constituted by a semiconductor pressure sensor, an amplification circuit 29 for amplifying a detection output signal of the pressure sensor 28, and analog / digital conversion of the output signal of the amplification circuit 29. The A / D conversion circuit 30 that outputs to the controller 20 is connected.

FIG. 5 is a schematic configuration block diagram of the remote control unit.
The remote control unit 4 includes a ROM and a RAM (not shown), an MPU 31 that controls the entire remote control unit 4, an operation unit 32 that a diver who is a user performs various operations, and a display unit 33 that displays various information such as an operation state. The communication unit 34 communicates with the communication unit 26 of the diving mask 5.
Here, the principle of color correction will be described.
FIG. 6 is a diagram showing the relationship between the absorbance of sunlight and the water depth due to standard seawater. FIG. 7 is a diagram for explaining the relationship between the absorbance at a water depth of 15 meters and the color correction amount.
FIG. 6 shows a red absorbance characteristic RE, an orange absorbance characteristic OR, a yellow absorbance characteristic YE, a green absorbance characteristic GR, and a blue absorbance characteristic BL.
As shown in FIG. 6, it can be seen that the longer the wavelength of light, the lower the absorbance at the lower water depth and the greater the absorption by seawater.
Specifically, as shown in FIG. 7, at a water depth of 15 meters, the absorbance of red light = 10, the absorbance of orange light = 15, the absorbance of yellow light = 20, the absorbance of green light = 35, and the absorbance of blue light. = 50, absorbance of purple light = 20.
In the case of the above-described example of a water depth of 15 meters, the color correction amount is set as follows, for example.

Color correction amount of red light = 100%, color correction amount of orange light = 100%, color correction amount of yellow light = 75%, color correction amount of green light = 42%, color correction amount of blue light = 30%, Purple light color correction amount = 75%.
This color correction amount data is stored in advance in the ROM 23 as a color correction table in association with each water depth (for example, every 5 meters of water depth). Here, the ROM 23 functions as an absorption characteristic storage unit, and the color correction table corresponds to the absorption characteristic.
FIG. 8 is a processing flowchart of the embodiment.
First, a diver who is a user operates the operation unit 32 of the remote control unit 4 and inputs an instruction to perform color correction. As a result, the MPU 31 transmits a color correction instruction command to the communication unit 26 of the diving mask 5 via the communication unit 34.
In parallel with this, the MPU 31 displays on the display unit 33 the transmission of the color correction instruction command and the start of color correction processing.

On the other hand, when receiving the color correction instruction command via the communication unit 26, the controller 20 of the diving mask 5 detects the current water depth (step S1). That is, the water depth is detected based on the pressure detected by the pressure sensor 28. In parallel with this, the controller 20 controls the camera 5A to capture surrounding images.
Specifically, the pressure sensor 28 detects the water pressure, which is the ambient pressure, and outputs a detection output signal to the amplifier circuit 29. The amplifier circuit 29 amplifies the detection output signal and outputs it to the A / D conversion circuit 30. The A / D conversion circuit 30 performs analog / digital conversion of the output signal of the amplification circuit 29 and outputs the converted pressure data to the controller 20.
As a result, the controller 20 converts the pressure data into water depth data.
Next, the controller 20 determines whether or not the water depth detection is completed (step S2). When the water depth detection is completed (step S2; Yes), the controller 20 refers to the color correction table stored in the ROM 23 and determines the current water depth. Is read out (step S3).
Next, the controller 20 performs color correction processing on the image data output from the camera 5A in correspondence with the color correction amount data, and writes the image data in the VRAM 25 (step S4).

Subsequently, the controller 20 displays an image corresponding to the image data after color correction in the VRAM 25 on the transmissive display panels 21R and 21L via the driver 22 (step S5).
As a result, the surrounding scenery seen by the diver can be seen in a more natural color than before. In other words, in the past, marine organisms such as fish and sea bream that looked brown due to the absorption of sunlight by seawater can be seen as fish and sea bream with their original colorful colors. You can improve your enjoyment.
In the above description, the image obtained by performing color correction on the image captured by the camera 5A is displayed superimposed on the actual scenery. However, the transmissive display panels 21R and 21L are used as color filters having colors according to the water depth. Even if it is made to function, the same effect can be obtained.
In the above description, the case where the color correction is automatically performed has been described. However, since actual diving is also affected by the transparency of seawater, a manual correction button is provided on the remote control unit 4 side or the diving mask 5, It is also possible to configure so that the color after automatic correction is further corrected to a favorite color.

In the above embodiment, color correction is performed according to the water depth. However, in order to perform more accurate color correction, it is preferable to perform white balance adjustment. Hereinafter, a modified example of the embodiment when white balance adjustment is performed will be described.
In this case, since the apparatus configuration is the same as that of the above embodiment, detailed description is omitted.
FIG. 9 is a process flowchart of a modification of the embodiment.
First, a diver who is a user operates the operation unit 32 of the remote control unit 4 and inputs an instruction to perform color correction. As a result, the MPU 31 transmits a color correction instruction command to the communication unit 26 of the diving mask 5 via the communication unit 34.
In parallel with this, the MPU 31 displays on the display unit 33 the transmission of the color correction instruction command and the start of color correction processing.
On the other hand, when receiving the color correction instruction command via the communication unit 26, the controller 20 of the diving mask 5 performs white balance adjustment (step S1). That is, the controller 20 controls the camera 5A to capture a surrounding image and adjust the white balance of the captured image.

Here, a method of white balance adjustment will be described.
White balance adjustment methods include auto white balance adjustment and semi-auto white balance adjustment.
The auto white balance adjustment is automatically set so that a part or the whole of the captured image of the camera 5A, for example, the color of the central portion of the captured image is mixed to become white. Specifically, when processing in RGB,
R: G: B = 255: 255: 255
If it is white at the ratio of, about the color when all the colors of the center part of the captured image are mixed,
R: G: B = 173: 125: 218
If the ratio is, the correction amounts CR, CG, and CB for R, G, and B are set as follows.
CR = 255-173 = 82
CG = 255-125 = 130
CB = 255-218 = 37

Therefore, actually, the captured image is R: G: B = 82: 130: 37.
Color correction is performed so as to obtain an image viewed with a color filter having a value of.
The semi-auto white balance adjustment is to perform the same correction as the auto white balance adjustment so that a white subject (for example, a white plastic plate) is imaged by the camera 5A and the color of the subject in the captured image becomes white. According to this method, a more ideal white balance adjustment can be performed as compared with the automatic white balance adjustment. As described above, a white object may be used separately from the diving mask 5 as described above. However, a storage member that can be stored while supporting a small object by the diving mask 5 is provided to adjust the white balance. A configuration in which a diver who is a user can draw a subject to a position separated from the front of the camera 5A by a predetermined distance may be employed.

Next, the controller 20 determines whether or not the white balance adjustment is completed (step S12).
If it is determined in step S12 that the white balance adjustment has not been completed, the controller 20 enters a standby state.
If the white balance adjustment is completed in the determination in step S12, the controller 20 applies color correction processing to the image data output from the camera 5A in accordance with the color correction amount corresponding to the white balance adjustment, and stores it in the VRAM 25. Write (step S4).
Subsequently, the controller 20 displays an image corresponding to the image data after color correction in the VRAM 25 on the transmissive display panels 21R and 21L via the driver 22 (step S5).
As a result, as in the above-described embodiment, the surrounding scenery viewed by the diver can be seen in a more natural color than in the past. In other words, in the past, marine organisms such as fish and sea bream that looked brown due to the absorption of sunlight by seawater can be seen as fish and sea bream with their original colorful colors. You can improve your enjoyment.

In the above description, the case where white balance adjustment is performed in RGB has been described, but it is also possible to perform a normal process in color correction of other images. As other processing, for example, a histogram of an image can be created and corrected so that the histogram is the same as the image on the ground, gamma adjustment, or color temperature adjustment can be performed.
In the description of each of the above embodiments, the transmissive display panel is used as the display panels 21R and 21L. However, a reflective display panel may be used. In this case, for example, when the power is turned off, it becomes impossible to see the outside world. Therefore, it is preferable that only the display panel portion can be detached from the diving mask 5 even underwater.
In the above description, the case where there is one camera has been described. However, if two cameras are provided so as to have a predetermined parallax and images corresponding to the display panels 21R and 21L are displayed, a three-dimensional display is provided. It is possible to display without reducing the feeling. This is particularly effective when a reflective display panel is used.

In the above description, specific examples of the display panels 21R and 21L have not been described, but (transparent or reflective) liquid crystal display panels, organic EL display panels, and the like are conceivable.
In the above description, the communication method of the communication unit is not mentioned, but it is also possible to perform a wireless communication using ultrasonic waves or light, or a wired communication.
In the above description, the case where there are two display panels has been described. However, the display panel may be configured so as to include a single display panel or three or more display panels.
In the above description, the case where the control program for controlling the diving mask 5 is stored in the ROM in advance has been described. However, the control program is recorded in advance on recording media such as various magnetic disks, optical disks, and memory cards. However, it is also possible to read and install from these recording media via the communication unit. It is also possible to connect the communication unit to a network such as the Internet or a LAN, download the control program via the network, install it, and execute it. With this configuration, it is possible to perform color correction processing control with higher functionality in terms of software.
In the above description, the diving mask has been described as an example. However, the camera unit that captures an image, the light absorption characteristic determination unit that determines the light absorption characteristic of sunlight by water around the current position of the diver, and the determined light absorption When configuring a color correction unit that corrects the color of the image in accordance with characteristics and a display unit that displays the image after correcting the color, the color correction unit, the display unit, and the like are arranged in the viewfinder unit of the underwater camera. It can also be configured as a display unit, a color correction unit, or the like of equipment used underwater, such as a display unit of a divers information processing apparatus (dive computer).

It is a use mode figure of the diving equipment in the case of using the mask for diving (diving mask) of an embodiment. It is outline structure explanatory drawing of the diving equipment of an embodiment. It is a sectional view of a diving mask. It is a general | schematic block diagram of the control system of a diving mask. It is a general | schematic block diagram of a remote control unit. It is a figure which shows the relationship between the light absorbency of the sunlight ray by standard seawater, and the water depth. It is a figure explaining the relationship between the light absorbency in 15 meters of water depths, and a color correction amount. It is a processing flowchart of an embodiment. It is a process flowchart of the modification of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Dive computer, 5 ... Submersible mask, 5A ... Camera, 5B ... Main body frame, 5C ... Lens frame, 5D, 5E ... Rigid lens, 5F ... Skirt part, 5G ... Nose frame 5G, 21R, 21L ... Transmission type display panel , 22 ... driver, 23 ... ROM, 24 ... RAM, 25 ... VRAM, 26 ... communication unit, 27 ... operation unit, 28 ... pressure sensor, 29 ... amplification circuit, 30 ... A / D conversion circuit, 31 ... MPU, 32 ... operation unit, 33 ... display unit, 34 ... communication unit.

Claims (10)

A camera unit for capturing an image;
Absorption characteristic discriminating part for discriminating the absorption characteristic of sunlight by water around the current position of the diver,
A color correction unit that corrects the color of the image corresponding to the determined light absorption characteristics;
A display unit for displaying an image after correcting the color;
A diving mask characterized by comprising: The diving mask according to claim 1,
The light absorption characteristic determination unit includes a pressure detection unit that detects an ambient pressure, and a water depth calculation unit that calculates a water depth based on the ambient pressure,
The color correction unit has a light absorption characteristic storage unit that stores the light absorption characteristic in advance corresponding to the water depth, reads the light absorption characteristic corresponding to the water depth calculated by the water depth calculation unit, and corrects the color of the image To
Diving mask characterized by that. The diving mask according to claim 1,
The light absorption characteristic determination unit includes a white balance adjustment unit that generates white balance adjustment data for adjusting white balance based on an image captured by the camera unit,
The diving mask, wherein the color correction unit corrects the color of the image based on the white balance adjustment data. The diving mask according to any one of claims 1 to 3,
The diving mask, wherein the display unit includes a transmissive display device, and displays an image after correcting the color on the scenery around the diver. The diving mask according to claim 1 or 2,
The display unit includes a reflective display device, and displays an image after correcting the color corresponding to the scenery around the diver. An imaging process for capturing images;
Absorption characteristics determination process to determine the absorption characteristics of sunlight by water around the current position of the diver,
A color correction process for correcting the color of the image corresponding to the determined light absorption characteristics;
A display process for displaying the image after correcting the color;
A control method for a display device for a diving mask, comprising: In a control program for controlling a diving mask comprising a camera unit that captures an image and a display unit that displays the captured image by a computer,
Let the camera part take an image,
Determine the light absorption characteristics of sunlight by the water around the current position of the diver,
The color of the image is corrected according to the determined light absorption characteristic,
Displaying the image after correcting the color on the display unit;
A control program characterized by that. The control program according to claim 7,
Detect ambient pressure,
Calculate the water depth based on the ambient pressure,
Pre-store the light absorption characteristics corresponding to the water depth,
Correcting the color of the image based on the light absorption characteristics corresponding to the calculated water depth,
A control program characterized by that. The control program according to claim 7,
Based on the image captured by the camera unit, the white balance is adjusted to generate white balance adjustment data,
A control program for correcting the color of the image based on the white balance adjustment data. 10. A computer-readable recording medium on which the control program according to claim 7 is recorded.

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