JP2012124801A - Camera - Google Patents

Abstract

A camera capable of obtaining image data having a natural color is provided.
An imaging unit, a projection unit, a setting unit for setting a white balance value used when imaging is performed in the imaging unit, and a projection irradiated from the projection unit based on the white balance value. A determining unit 4 that determines the color of the light; a projection control unit 36 that irradiates the projection light of the color determined by the determining unit from the projection unit; and a projection light of the color determined by the determining unit from the projection unit And an imaging control unit 26 that performs imaging by the imaging unit while irradiating the light.
[Selection] Figure 1

Description

  The present invention relates to a camera.

  2. Description of the Related Art Conventionally, there is a portable information device that can perform projector projection and shooting simultaneously (see, for example, Patent Document 1). According to this portable information device, by projecting an image having a uniform luminance within the shooting angle of view, the projection light can be used as an assisting framing light as well as a framing assist light.

JP 2006-93801 A

  However, in the above-described portable information device, when the color of the photographing auxiliary light and the color of the ambient light do not match, the color of the photographing auxiliary light and the color of the environmental light are related to the color of the obtained image data. In some cases, the difference causes unnaturalness or a sense of incongruity, and image data having a natural color cannot be obtained.

  An object of the present invention is to provide a camera capable of obtaining image data having a natural color.

  The camera of the present invention includes an imaging unit, a projection unit, a setting unit for setting a white balance value used when imaging is performed in the imaging unit, and projection light emitted from the projection unit based on the white balance value A determining unit that determines the color of the projector, a projection control unit that irradiates the projection light of the color determined by the determination unit from the projection unit, and irradiation of the projection light of the color determined by the determination unit from the projection unit And an imaging control unit that performs imaging by the imaging unit.

  According to the present invention, natural color image data can be obtained.

It is a block diagram which shows the system configuration | structure of the camera which concerns on embodiment. It is a flowchart which shows the imaging | photography process of the camera which concerns on embodiment. It is a rear view which shows the external appearance of the camera which concerns on embodiment.

  A camera according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a system configuration of a camera according to an embodiment of the present invention. As shown in FIG. 1, the camera 2 includes a control unit 4 that comprehensively controls each unit of the camera 2. The control unit 4 includes an imaging unit 8 that captures an image of a subject, a memory 10 that stores image data generated from an imaging signal output from the imaging unit 8, a shooting process, a projection process, and a projection light that are executed by the control unit 4. A program memory 11 for storing a program for determining colors, a memory card 12 for storing image data of a captured image and a projected image, a projection unit 14 for irradiating projection light within a shooting angle of view by the imaging unit 8, and a camera 2 An LCD display 16 and an operation unit 18 are connected to display an image, a through image, a screen for setting the mode of the camera 2, and the like that are arranged on the back surface and captured by the imaging unit 8.

  Here, the imaging unit 8 includes a photographing lens 20, an image sensor 22, a lens driving circuit 24, and a photographing control circuit 26. The image sensor 22 is configured by an image sensor such as a CCD or a CMOS. The taking lens 20 forms a subject image on the image pickup surface of the image sensor 22. The imaging control circuit 26 drives and controls the image sensor 22 and the lens driving circuit 24 according to a command from the control unit 4. That is, the imaging control circuit 26 causes the image sensor 22 to start imaging in response to an imaging start instruction from the control unit 4, and sends the imaging signal read from the image sensor 22 to the control unit 4. The lens driving circuit 24 moves a focus lens (not shown) constituting the photographing lens 20 in the optical axis direction based on the focus adjustment signal output from the photographing control circuit 26. The lens driving circuit 24 moves a zoom lens (not shown) constituting the photographing lens 20 in the optical axis direction (tele side or wide side) based on the zoom adjustment signal output from the photographing control circuit 26.

  The projection unit 14 includes a projection lens 30, a liquid crystal panel 32, an LED light source 34, and a projection control circuit 36. The projection unit 14 projects an image displayed on the liquid crystal panel 32 via the projection lens 30. The projection control circuit 36 controls the LED light source 34 and the liquid crystal panel 32 according to the projection command output from the control unit 4.

  The operation unit 18 includes a power switch, a release button, a zoom button, a mode setting button for setting the mode of the camera 2, a projection light adjusting member 40 for adjusting the color of the projection light, a cross button, an OK button, and the like.

  Here, the imaging unit 8 and the projection unit 14 are arranged such that the shooting direction by the imaging unit 8 and the projection direction by the projection unit 14 face the same direction. Further, the imaging unit 8 and the projection unit 14 are arranged close to each other. Thereby, it is possible to irradiate the projection light from the projection unit 14 within the shooting angle of view by the imaging unit 8.

  Next, imaging processing of the camera 2 according to the embodiment of the present invention will be described with reference to the flowchart shown in FIG. When the operator operates the mode setting button of the operation unit 18 to shift the camera 2 to the shooting mode, the control unit 4 images the subject at a predetermined frame rate by the imaging unit 8, and is output from the imaging unit 8. A through image is displayed on the LCD display unit 16 based on the captured image signal. Here, the image data of the through image output from the imaging unit 8 is temporarily stored in the memory 10.

  When the release button is half-pressed (step S10, Yes), the control unit 4 is used for shooting when the imaging unit 8 performs imaging based on the image data temporarily stored in the memory 10. A white balance value is calculated (step S12). Here, the white balance value for photographing is a value defined by color coordinates such as RGB and YUV.

  When the shooting white balance value is expressed as a ratio of the RGB sensitivity of the image sensor 22, after the shooting white balance value is converted into color coordinates, the color of the projected light is changed to the shooting white balance value. The color of the projection light (projection white balance value) is determined so as to have the same color coordinates (step S14). The projection control circuit 36 controls the reflectance or transmittance of each pixel of the liquid crystal panel 32 in accordance with a command from the control unit 4, and the projection light having the determined white balance value for projection is captured from the projection unit 14. Irradiation is within the field angle of view by the unit 8 (step S16).

  When the projection light adjusting member 40 is operated (Step S18, Yes), the control unit 4 adjusts the color of the projection light (Step S20). That is, as shown in FIG. 3, when the projection light adjusting member 40 included in the operation unit 18 provided on the back surface of the camera 2 is rotated clockwise, the reflectance of each pixel of the liquid crystal panel 32. Alternatively, the transmittance is controlled to increase the red component of the color of the projection light. Conversely, when the projection light adjusting member 40 is rotated counterclockwise, the blue component of the color of the projection light is increased. Therefore, the operator adjusts the color of the projection light to a desired color by operating the projection light adjusting member 40 while confirming the color of the projection light. Then, the process returns to step S16, and the projected light of the adjusted color is irradiated within the shooting angle of view by the imaging unit 8 (step S16).

  When the release button is fully pressed (step S22, Yes), the control unit 4 performs imaging using the imaging white balance value (step S24), and an image based on the captured image. Data is stored in the memory card 12.

  According to the camera of the embodiment of the present invention, the color of the projection light emitted from the projection unit is determined based on the white balance value for shooting, and based on the color determined by the projection unit within the shooting angle of view. Since imaging is performed by the imaging unit in a state in which the projection light is irradiated, it is possible to perform shooting in a state where the color of the projection light matches the color of the ambient light. Therefore, it is possible to obtain image data having a natural color without any unnaturalness or discomfort caused by the color difference between the projection light and the ambient light. Further, by adjusting the color of the projection light in a state where the projection light is irradiated, the color of the projection light can be adjusted to a color desired by the operator according to the shooting environment.

  In the above-described embodiment, the white balance value for photographing is calculated based on the image data of the through image output from the imaging unit 8, but by the operation using the operation unit 18 by the operator, A white balance value for photographing used in the photographing mode may be set in advance.

  Further, in the above-described embodiment, when a plurality of shooting white balance values corresponding to the shooting environment are stored in the memory 10, the plurality of shooting white balance values are used in the shooting mode by the operator's operation. A white balance value for photographing may be selected in advance by operating the operation unit 18.

  In the above-described embodiment, an RGB LED light source or an RGB laser light source is used instead of the LED light source 34 to control the current ratio of each color LED or each color laser, thereby irradiating from the RGB LED light source or RGB laser light source. You may make it irradiate the projection light of the color based on the white balance value for imaging | photography, adjusting the color of light.

  In the above-described embodiment, when the projection unit 14 of the camera 2 includes a DMD (digital mirror device), the white balance for shooting is controlled by controlling the reflection time of each mirror of the DMD in a predetermined direction. You may make it irradiate the projection light of the color based on a value.

  DESCRIPTION OF SYMBOLS 2 ... Camera, 4 ... Control part, 8 ... Imaging part, 10 ... Memory, 14 ... Projection part, 16 ... LCD display part, 18 ... Operation part, 26 ... Shooting control circuit, 36 ... Projection control circuit.

Claims (5)

An imaging unit;
The projection department,
A setting unit for setting a white balance value used when imaging in the imaging unit;
A determination unit that determines a color of projection light emitted from the projection unit based on the white balance value;
A projection control unit that irradiates the projection light of the color determined by the determination unit from the projection unit;
A camera comprising: an imaging control unit that performs imaging by the imaging unit while irradiating the projection light of the color determined by the determination unit from the projection unit.   The camera according to claim 1, wherein the white balance value is a white balance value calculated based on an imaging signal output from the imaging unit.   The camera according to claim 1, wherein the white balance value is a white balance value selected by an operator. Provided with a shutter button for instructing imaging by the imaging unit by a full-press operation and instructing imaging preparation by the imaging unit by a half-press operation,
The camera according to claim 1, wherein the projection light of the color determined by the determination unit is emitted from the projection unit by a half-press operation of the shutter button.   The camera according to claim 1, further comprising an adjustment unit that adjusts a color of projection light emitted from the projection unit.

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