JP2005217516A - Portrait generating method, and portrait generating system and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily carry out background image combination processing while representing an atmosphere suitable for photographing an object. <P>SOLUTION: In a photographed image processing system 100, a background lighting unit 222 projects a background image onto a plain background member 25 under the control of a photographing control section 21, and the photographing condition of a DSC23 and object lighting units 221a, 221b is set. When a release switch is depressed, the background lighting unit 222 is turned off, a shutter in the DSC 23 is released succeedingly and an object α is photographed. Photographed image information obtained by photographing is subjected to signal value conversion by a pre-processing section 51 and thereafter an object image extract section 52 detects the contour of an object image region to extract object image information, and an image combination section 53 combines the extracted object image information with background image information prepared in advance. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portrait creation method, a portrait creation system, and a program for photographing a subject and performing image processing on obtained captured image information to create a portrait.

  Although the background when shooting a portrait of a person in a shooting studio is not a main subject, it is a component that plays a very important role in enhancing the subject person. In an old photographic studio, several roll-shaped wallpapers that can wind up and store this background were prepared and exchanged depending on the application.

  The above-mentioned wallpaper is an important element in deciding the quality of a photograph, and is very expensive due to the attention paid to the material and texture. In recent years, portrait photography styles have become diversified, and a wide variety of backgrounds have been required, and the number of cases in which conventional roll-shaped wallpaper cannot be supported is increasing.

  For this reason, there is a case where only one type of wallpaper is used, and a background image is projected onto a plain wallpaper using a slide projector or the like, and a person is photographed against this background. This is effective for projecting a zodiac pattern on the back when taking a simple pattern, for example, a family photo used for New Year's cards. However, it is impossible to give a more profound feeling or display a realistic background.

Therefore, Patent Document 1 discloses a technique using a chroma key, which is used when a subject image is cut out from a background image and combined with another background image. By using such a method, a free background can be used.
Japanese Patent Laid-Open No. 11-261888

  It is very important to create an environment for taking pictures in order to bring out the preferable facial expressions of ordinary customers who are not photographed and take portrait pictures. However, in the case of the technique using image composition of Patent Document 1, in actual shooting, the background is a solid background, preferably a color as low as possible that can be overlapped with the color of the subject, so that the background can be easily synthesized. If so, take a picture using blue. If the subject to be photographed is a profession model, there is no particular problem even in this state, but in the case of a photography studio that is generally present in the city, the subject is a general customer and before the blue plain back as described above There is a problem that it is almost impossible to pose or make facial expressions according to the atmosphere of the background, which will be synthesized from now on, and there is a problem that it is not possible to take a preferable photograph. It was very difficult to use the synthesis method.

  The present invention has been made in view of such circumstances, and a portrait creation method and a portrait capable of easily performing background image composition processing while producing an atmosphere suitable for photographing a subject. An object is to provide a creation system and a program.

In order to solve the above-mentioned problem, the invention described in claim 1
A background image is displayed behind the subject before the subject is photographed, and the display of the background image is stopped when the subject is photographed.

The invention according to claim 2 is the invention according to claim 1,
It is characterized in that the contour of the subject image area is detected from the photographed image information obtained by the photographing, subject image information is extracted, and background image information is synthesized with the extracted subject image information.

The invention according to claim 3
A first image is captured by displaying a background image behind the subject, a second image is captured by changing the luminance of the background image, and the first captured image information obtained by the first imaging and the first image Subject image information is extracted using the second photographed image information obtained by the second photographing, and background image information is synthesized with the extracted subject image information.

The invention according to claim 4 is the invention according to claim 2 or 3,
The background image information to be combined with the extracted subject image information is similar to the displayed background image.

The invention according to claim 5 is the invention according to claim 2 or 3,
The background image information to be combined with the extracted subject image information is related to the displayed background image.

The invention described in claim 6
Background display means for displaying a background image behind the subject;
Photographing means for photographing the subject;
Shooting control means for displaying a background image on the background display means before shooting the subject, and for stopping the display of the background image on the background display means when shooting the subject;
It is characterized by having.

The invention according to claim 7 is the invention according to claim 6,
Subject image extraction means for extracting the subject image information by detecting the contour of the subject image region from the photographed image information obtained by the photographing;
Image synthesizing means for synthesizing background image information with the extracted subject image information;
It is characterized by having.

The invention according to claim 8 provides:
Background display means for displaying a background image behind the subject;
Photographing means for photographing the subject;
A shooting control unit configured to display the background image on the background display unit to perform the first shooting, and to control the background image display unit to perform the second shooting by changing the luminance of the background image;
Subject image extraction means for extracting subject image information using the first photographed image information obtained by the first photographing and the second photographed image information obtained by the second photographing;
Image synthesizing means for synthesizing background image information with the extracted subject image information;
It is characterized by having.

The invention according to claim 9 is the invention according to claim 7 or 8,
The background image information to be combined with the extracted subject image information is similar to the displayed background image.

The invention according to claim 10 is the invention according to claim 7 or 8,
The background image information to be combined with the extracted subject image information is related to the displayed background image.

The invention according to claim 11
On the computer,
It is a program for realizing a function of displaying a background image behind the subject before photographing the subject and stopping the display of the background image when photographing the subject.

The invention according to claim 12 is the invention according to claim 11,
In addition to the computer,
A function of detecting the contour of the subject image from the photographed image information obtained by the photographing and extracting the subject image information;
A function of combining background image information with the extracted subject image information;
It is characterized by realizing.

The invention according to claim 13
On the computer,
A function of performing a first shooting by displaying a background image behind a subject and performing a second shooting by changing the luminance of the background image;
A function of extracting subject image information using first captured image information obtained by the first photographing and second photographed image information obtained by the second photographing;
A function of combining background image information with the extracted subject image information;
It is characterized by being a program for realizing.

The invention according to claim 14 is the invention according to claim 12 or 13,
The background image information to be combined with the extracted subject image information is similar to the displayed background image.

The invention according to claim 15 is the invention according to claim 12 or 13,
The background image information to be combined with the extracted subject image information is related to the displayed background image.

  According to the first, sixth, and eleventh aspects, the background image is displayed behind the subject before the subject is photographed, and the display of the background image is stopped when the subject is photographed. Therefore, in portrait shooting, the background image is displayed before shooting to produce an atmosphere suitable for shooting the subject, while the background image display is stopped at the time of shooting and shooting is performed with a background of a plain background. It is possible to extract a preferable expression from the subject, and it is possible to obtain photographed image information that is easy to perform image composition processing with a plain background.

  According to the invention described in claims 2, 7 and 12, the contour of the subject image area is detected from the photographed image information obtained by photographing performed by stopping the display of the background image, and the subject image information is extracted, Background image information is combined with the extracted subject image information. Accordingly, the subject image information can be easily extracted from the captured image information, and the background image information can be synthesized.

  According to the third, eighth, and thirteenth aspects of the present invention, the first image is taken by displaying the background image behind the subject, the second image is taken by changing the luminance of the background image, and the first image is taken. The subject image information is extracted using the first photographed image information obtained by photographing and the second photographed image information obtained by second photographing, and the background image information is synthesized with the extracted subject image information. Therefore, in portrait shooting, it is possible to produce an atmosphere suitable for shooting, to draw a preferable expression from the subject, and to easily obtain subject image information from the shot image information regardless of the color of the subject. It is possible to accurately extract and combine the subject image information and the background image information.

  According to the invention described in claims 4, 9 and 14, the background image information to be combined with the extracted subject image information approximates the displayed background image. It is possible to produce an atmosphere according to the background image to be combined with the background.

  According to the fifth, tenth and fifteenth aspects of the present invention, the background image information to be combined with the extracted subject image information is related to the displayed background image. It is possible to produce an atmosphere according to the background image to be combined with the background.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
First, the configuration will be described.
FIG. 1 shows an example of the overall configuration of a captured image processing system 100 as a portrait creation system according to the present invention. As shown in FIG. 1, the captured image processing system 100 includes an FB (flat bed) scanner 11, a film scanner 12, a memory driver 13, an image input unit 14, an image capturing unit 20, an image display unit 30, an instruction input unit 40, an image. A processing unit 50, an image output unit 60, and the like are provided.

The FB scanner 11 obtains digital image information by reading an image on a reflective original such as a photographic print 71.
The film scanner 12 reads frame images recorded on a transparent original such as a developed photographic film 72 imaged by an analog camera and acquires digital image information.
The memory driver 13 reads and acquires digital image information recorded on various recording media 73 including MO (Magnet-Optic), CD-R (CD Recordable), and smart media cards.

  The image input unit 14 is connected to the FB scanner 11, film scanner 12, memory driver 13, and image processing unit 50, and digital image information acquired by the FB scanner 11, film scanner 12, and memory driver 13 is input to the image processing unit 50. input. The image input unit 14 is connected to the shooting control unit 21 of the shooting unit 20 and inputs image information shot by the shooting unit 20 to the image processing unit 50. Further, the image input unit 14 outputs the instruction information regarding the imaging input from the instruction input unit 40 via the image processing unit 50 to the imaging control unit 21 of the imaging unit 20.

  The imaging unit 20 is an imaging unit, and includes an imaging control unit 21, an illumination unit 22, a DSC (digital still camera) 23, a communication line 24, a background member 25, an imaging operation unit 26, and the like as shown in FIG. ing. FIG. 2 is a view showing the appearance of a shooting set in a shooting studio to which the shooting image processing system 100 according to the present invention is applied, and FIG. 3 is a block diagram showing the configuration of the shooting unit 20 in more detail. In the shooting studio, as shown in FIG. 2, a DSC 23 for shooting the subject α and subject illuminators 221a and 221b for illuminating the subject α are arranged in front of the subject α. A plain background member 25 is disposed behind the subject α, and a background image that produces a background is displayed by a background illuminator 222 configured by a slide projector or the like. As shown in FIG. 3, the DSC 23, the subject illuminators 221 a and 221 b, and the background illuminator 222 are respectively connected by the imaging control unit 21, and the imaging of the subject α is performed by controlling these devices by the imaging control unit 21. To be implemented.

Hereinafter, each part of the imaging unit 20 will be described in detail.
The imaging control unit 21 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU is software that cooperates with a program stored in the ROM. Instruction information input from the instruction input unit 40 (for example, background image instruction information, etc.) input via the image processing unit 50 and the image input unit 14 by the processing, a release switch of the photographing operation unit 26, etc. Based on the above, illumination of the subject α and display of the background image are performed by controlling the power ON / OFF of each device of the illumination unit 22 and the amount of light, and the subject α is photographed by controlling the DSC 23 via the communication line 24. The obtained digital image information (captured image information) is output to the image input unit 14.

  As illustrated in FIGS. 2 and 3, the illumination unit 22 includes subject illuminators 221 a and 221 b and a background illuminator 222. The illumination unit 22 is connected to the shooting control unit 21, the subject illuminators 221 a and 221 b illuminate the subject α based on the control of the shooting control unit 21, and the background illuminator 222 is based on the control of the shooting control unit 21. The background member 25 is irradiated with light to project and display a background image. The background member 25 and the background illuminator 222 function as background display means.

  The DSC 23 includes a focusing lens, a zoom lens, an optical lens unit for imaging including a shutter and a diaphragm, a photoelectric conversion unit including an imaging element such as a CCD (Charge Coupled Device), and the like. The DSC 23 is connected to the imaging control unit 21 via the communication line 24, images the subject α based on the control from the imaging control unit 21, and photoelectrically converts the captured image as digital image information via the communication line 24. To the imaging control unit 21. The communication line 24 may be wireless or wired.

The background member 25 is configured by a plain screen, a panel, or the like, and displays a background image projected from the background illuminator 222.
The photographing operation unit 26 is a release switch or the like, and outputs a pressing signal to the photographing control unit 21.

  The image display unit 30 is connected to the image processing unit 50 and includes a display screen formed by a CRT (Cathode Ray Tube), an LCD (Liquid Crystal Display), or the like, and in accordance with an instruction of a display signal input from the image processing unit 50. Display image information on the screen.

  The instruction input unit 40 is connected to the image processing unit 50, and includes a keyboard having character / alphanumeric input keys, cursor keys, various function keys, and the like, a mouse as a pointing device, and the like. The pressed signal of the pressed key and the operation signal by the mouse are output to the image processing unit 50 as input signals.

  The image processing unit 50 includes a CPU, a ROM, a RAM, and the like. The CPU performs various kinds of images on the digital image information input from the image input unit 14 through software processing in cooperation with a program stored in the ROM. Apply processing. Specifically, the CPU of the image processing unit 50 performs the software processing in cooperation with a program stored in the ROM as the preprocessing unit 51, the subject image extraction unit 52, and the image composition unit 53 illustrated in FIG. The subject image area is extracted from the captured image information input from the image input unit 14 and is combined with a previously stored background image.

The preprocessing unit 51 converts the captured image information input from the image input unit 14 into image information that can be easily subjected to subsequent signal processing. For example, when the input image information is composed of a signal value indicating the transmitted light amount, a process for converting the input image information into a signal value indicating the optical density is performed.
The subject image extraction unit 52 detects the contour of the subject image area from the preprocessed captured image information, and extracts subject image information.
The image composition unit 53 performs composition processing of the extracted subject image information and background image information previously set in a storage unit such as a ROM to create output image information.

  As shown in FIG. 1, the image output unit 60 includes an image output control unit 61, an image print unit 62, a media writing unit 63, and the like.

The image output control unit 61 is connected to the image processing unit 50 and outputs the output image information input from the image processing unit 50 to the image printing unit 62 or the media writing unit 63.
The image print unit 62 exposes the photosensitive material based on the output image information input from the image output control unit 61, develops the exposed photosensitive material, and dries it to create a photographic print 81. The media writing unit 63 includes a recording media slot and the like, and writes output image information input from the image output control unit 61 to various recording media 82 such as an MO, a CD-R, and a smart media card.

  In FIG. 1, the imaging control unit 21 and the image processing unit 50 have been described as independent configurations connected via the image input unit 14, but are not necessarily realized as independent devices. You may implement | achieve by the software process by cooperation with the program memorize | stored in memory | storage means, such as single CPU and ROM.

Next, the operation of the first embodiment will be described.
FIG. 4 shows a portrait shooting sequence A executed by the shot image processing system 100. This sequence is a sequence executed when a background image to be displayed on the background member 25 is selected by the instruction input unit 40 and an instruction for photographing is given.

  First, when a shooting instruction from the instruction input unit 40 is input to the shooting control unit 21, the background illuminator 222 is controlled by the shooting control unit 21, and a background image selected in advance is projected and displayed on the background member 25. (Step S1). By displaying this background image, an atmosphere suitable for photographing is produced. Next, the photographing control unit 21 sets the photographing conditions of the DSC 23 and the subject illuminators 221a and 221b (step S2), and waits for the release switch of the photographing operation unit 26 to be pressed (step S3). When the release switch is pressed (step S3; YES), the photographing controller 21 stops the background image display by turning off the background illuminator 222 (step S4), and then the shutter is turned off in the DSC 23. The subject α is photographed (step S5), and after photographing, the background illuminator 222 projects and displays the background image on the background member 25 again (step S6). That is, when the background illuminator 222 is turned off during shooting, the display of the background image is stopped and shooting of the subject α is performed.

  When photographed image information obtained by photographing is input to the image processing unit 50 via the image input unit 14, the pre-processing unit 51 converts the photographed image information into image information that can be easily subjected to subsequent signal processing. Pre-processing such as processing (for example, conversion processing from a luminance signal to an optical density signal) is performed (step S7). Next, the subject image extraction unit 52 detects the contour of the subject image region from the pre-processed captured image information, and extracts subject image information (step S8). Then, in the image composition unit 53, background image information corresponding to the background image projected in step S1 prepared in advance and stored in a storage means such as a ROM is read out, and read out as the extracted subject image information. The output background image information is combined (step S9), and the portrait photographing sequence A ends.

  Here, the storage means such as the ROM stores in advance the background image that can be displayed in step S1 and the background image information used at the time of image composition when the background image is displayed. For example, displayable background images are each assigned an identification code for uniquely identifying each background image, and background image information corresponding to the background image is stored in association with this identification code. .

  The background image information associated with the background image is an image approximated to the background image, or an image having an atmosphere similar to the background image and related to the background image. For example, when shooting Shichigosan, display the Shinto shrine and Buddhist temple as a background image and shoot, and combine the subject image information with the image of the autumn shrine and Buddhist temple as well, It becomes possible to carry out in an atmosphere. In addition, in the case of Shichigosan's photography, even if the image of autumn leaves is displayed on the background image and taken, and the subject image information is combined with the image of the autumn shrine and Buddhist temple, the shooting is the same as the background to be combined. It becomes possible to perform in the quiet atmosphere of autumn.

  After this processing is completed, the synthesized image information is output to the image output unit 60, and the portrait created in the captured image processing system 100 is output.

  Note that the portrait shooting sequence A described in FIG. 4 is a program stored in a CPU and a storage unit such as a ROM of the shooting control unit 21, and a program stored in a storage unit such as a CPU and a ROM of the image processing unit 50. The imaging control unit 21 and the image processing unit 50 are realized by software processing in cooperation with a single CPU and a program stored in a storage unit such as a ROM, and the above sequence is realized. It may be realized.

  As described above, according to the photographed image processing system 100, in portrait photography, the background image is projected and displayed from the background illuminator 222 onto the plain background member 25 under the control of the photography control unit 21, and the DSC 23, When the shooting conditions of the subject illuminators 221a and 221b are set and the release switch is pressed, the background illuminator 222 is turned off to stop the display of the background image, and then the shutter is released in the DSC 23 and the subject α Is filmed. The photographed image information obtained by photographing is output to the image processing unit 50, subjected to signal value conversion by the preprocessing unit 51, and then the subject image region is detected by the subject image extraction unit 52, thereby subject image. The information is extracted, and the image composition unit 53 synthesizes the extracted subject image information and the background image information prepared in advance.

  Therefore, in portrait shooting, first, a background image similar to or related to the background to be combined with the portrait is displayed on the background member to produce an atmosphere suitable for shooting the subject, and at the shooting timing, the background Since the display of the image is stopped and the background is photographed as a plain background, it is possible to bring out a preferable expression from the subject, and the background is plain, and the subject contour can be easily extracted, and therefore the image composition processing is easy to perform. Image information can be obtained.

  In addition, the description content in the said embodiment is a suitable example of the picked-up image processing system 100 which concerns on this invention, and is not limited to this.

  For example, in the above embodiment, the background image is projected by the background illuminator from the front of the background member to display the background image, but the method of displaying the background image is not limited to this. For example, a background image may be projected and displayed on the translucent screen from the rear of the screen. Further, a background image may be displayed using a liquid crystal display, a plasma display, or the like.

  The background image may be displayed not only behind the subject but also on the side. By displaying the background image on the side surface of the subject, it is possible to produce an atmosphere that is more suitable for photographing for the subject. When the background image is displayed on the side, the display may be stopped at the time of shooting, as with the background image displayed behind, but it is displayed because it does not affect the extraction of the subject area in the subsequent stage. You may shoot with For example, if the background image is a sea or sky scene, it is more effective to not erase the side image because blue light is reflected in the subject. It is preferable to use it.

  In the above embodiment, the captured image processing system 100 is configured to include an FB scanner, a film scanner, and the like. However, these configurations are not essential for the implementation of the present invention and may be provided separately.

  In the above embodiment, the sequence of the system including the photographing unit and the image processing unit has been described as an example. For example, steps S1 to S6 in FIG. 4 are performed by the photographing device that performs photographing. The obtained image information may be input to a separate image processing apparatus, and the image processing apparatus may perform step S7 and subsequent steps in FIG.

  Furthermore, the portrait creation method, the portrait creation system, and the program according to the present invention are not only used for an image photographed by the DSC 23, but, for example, instead of the DSC 23 shown in FIGS. (Not shown) is controlled by the image capturing control unit 21, and the film that has been imaged is developed to obtain a developed photographic film 72, an image is sampled by the film scanner 12, and an image signal is input to the image input unit 14. Then, the same result as in the above-described embodiment can be obtained by combining the shooting frame information of the film camera sent from the shooting control unit and the image information from the film scanner 12 in combination with the image processing unit 50.

  In addition, the detailed configuration and detailed operation of the captured image processing system 100 can be changed as appropriate without departing from the spirit of the present invention.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.
First, the configuration will be described. The configuration in the present embodiment is almost the same as that described in the first embodiment, and only the differences will be described below.

  In the present embodiment, the subject image extraction unit 52 in FIG. 1 takes a plurality of (here, two) photographed images obtained by photographing by changing the luminance of the background image by the photographing unit 20. The signal values of the corresponding pixels of the information are compared, and subject image information is extracted from the captured image information based on the comparison result. For example, since the condition of the subject illuminator at the time of photographing two pieces of photographed image information has changed, a region where the difference between the signal values of the corresponding pixels of the two pieces of photographed image information is smaller than a preset threshold value Extract as information.

Next, the operation in this embodiment will be described.
FIG. 5 shows a portrait shooting sequence B executed by the shot image processing system 100. This sequence is a sequence executed when a background image to be projected onto the background member 25 is selected by the instruction input unit 40 and photographing is instructed.

  First, when a shooting instruction from the instruction input unit 40 is input to the shooting control unit 21, the background illuminator 222 is controlled by the shooting control unit 21, and a background image selected in advance is projected and displayed on the background member 25. (Step S11). By displaying this background image, an atmosphere suitable for photographing is produced. Next, the photographing control unit 21 sets the photographing conditions of the DSC 23 and the subject illuminators 221a and 221b (step S12), and waits for pressing of the release switch of the photographing operation unit 26 (step S13). When the release switch is pressed (step S13; YES), the shutter is released in the DSC 23 under the control of the shooting control unit 21, and the first shooting is performed (step S14). After the first shooting, the intensity of light emitted from the background illuminator 222 for projecting the background image is changed by the control of the shooting control unit 21 (step S15), thereby changing the brightness of the background image. Thus, the second image is taken by the DSC 23 (step S16). The intensity of the light for projecting the background image may be changed in any way, but here, for example, the first shooting is set to ON and the second shooting is set to OFF.

  Captured image information obtained by the first and second photography (hereinafter, the photographed image information obtained by the first photography is referred to as the first photographed image information, and the photographed image information obtained by the second photography is represented as the second. Is input to the image processing unit 50 via the image input unit 14, and first, the pre-processing unit 51 converts each captured image information into image information that can be easily processed thereafter. Pre-processing such as processing (for example, conversion processing from a luminance signal to an optical density signal) is performed (step S17). Next, the subject image extraction unit 52 compares the signal values of the corresponding pixels of the first captured image information and the second captured image information, and the difference between the signal values is lower than a preset threshold value. A region is extracted as subject image information (step S18). Then, in the image composition unit 53, background image information corresponding to the background image projected in step S11 prepared in advance and stored in a storage unit such as a ROM is read out, and read out as the extracted subject image information. The outputted background image information is combined (step S19), and the portrait photographing sequence B is completed.

  Here, in the storage means such as the ROM, the background image that can be displayed in step S11 and the background image information that is used at the time of image composition when the background image is displayed are stored in association with each other. For example, displayable background images are each assigned an identification code for uniquely identifying each background image, and background image information corresponding to the background image is stored in association with this identification code. .

  The background image information associated with the background image is an image approximated to the background image, or an image having an atmosphere similar to the background image and related to the background image. For example, when shooting Shichigosan, display the Shinto shrine and Buddhist temple as a background image, shoot and combine the obtained subject image information with the background image information of the Shinto shrine and Buddhist temple as well. It is possible to perform in the background atmosphere to be synthesized. Similarly, in the case of Shichigosan's shooting, the image of autumn leaves is displayed on the background image, and the subject image information obtained is combined with the background image image of the autumn shrine or Buddhist temple. It is possible to perform in the quiet atmosphere of autumn, similar to the background to do.

  Note that the portrait shooting sequence B described in FIG. 5 is a program stored in the CPU and the storage means such as the ROM of the shooting control unit 21, and a program stored in the storage means such as the CPU and the ROM of the image processing unit 50. The imaging control unit 21 and the image processing unit 50 are realized by software processing in cooperation with a single CPU and a program stored in a storage unit such as a ROM, and the above sequence is realized. It may be realized.

  As described above, according to the photographed image processing system 100, in portrait photography, the background image is projected and displayed from the background illuminator 222 onto the plain background member 25 under the control of the photography control unit 21, and the DSC 23, When the shooting conditions of the subject illuminators 221a and 221b are set and the release switch is pressed, the first shooting is performed by the DSC 23, and then the light intensity of the background illuminator 222 is changed, and the brightness of the background image The second shooting is performed with the state changed. The first photographed image information and the second photographed image information obtained by photographing are subjected to signal value conversion by the preprocessing unit 51 in the image processing unit 50, and then the first photographing image information is obtained by the subject image extracting unit 52. The signal values of the corresponding pixels of the image information and the second captured image information are compared, subject image information is extracted based on the comparison result, and the image composition unit 53 extracts the extracted subject image information, Are combined with background image information prepared in advance.

  Therefore, in portrait photography, it is possible to produce a favorable atmosphere according to the background image to be combined with the portrait background, and when combining the background, regardless of the color of the subject, The subject image information can be easily and accurately extracted from the captured image information.

In addition, the description content in the said embodiment is a suitable example of the picked-up image processing system 100 which concerns on this invention, and is not limited to this.
For example, in the above-described embodiment, the captured image processing system 100 is configured to include the FB scanner, the film scanner, and the like.

  In the above-described embodiment, the sequence of the system including the photographing unit and the image processing unit has been described as an example. For example, steps S11 to S16 in FIG. 5 are performed by the photographing device that performs photographing. The obtained captured image information may be input to a separate image processing apparatus, and the image processing apparatus may perform step S17 and subsequent steps in FIG.

  Moreover, in the said embodiment, the brightness | luminance of a background image is changed by changing the light intensity of a background illuminator, 1st imaging | photography and 2nd imaging | photography are performed, and the 1st imaging | photography obtained by 1st imaging | photography is carried out. The subject image information is extracted with the region where the signal value difference between the first captured image information and the second captured image information obtained by the second photographing is lower than a predetermined threshold as the subject image region. The first photographing and the second photographing are performed by changing the light intensity of the illuminator, and the first photographed image information obtained by the first photographing and the second photographed image obtained by the second photographing. The subject image information may be extracted using a region where the difference in signal value from the information is higher than a predetermined threshold as a subject image region.

  In the above embodiment, as an example of a method for obtaining a plurality of captured image information in which the brightness of the background image is changed, an example in which the background illuminator is turned on / off and the image is captured twice has been described. For example, a light source with a lot of flicker (for example, a glow-lighting general fluorescent lamp) is used as the light source of the background illuminator, and shooting is performed twice at the timing synchronized with the maximum and minimum flickers. May be performed.

  In the above embodiment, the background image is displayed by projecting the background image from the front of the background member with the background illuminator. However, the method of displaying the background image is not limited to this. For example, a background image may be projected and displayed on the translucent screen from the rear of the screen. Further, a background image may be displayed using a liquid crystal display, a plasma display, or the like.

  The background image may be displayed not only behind the subject but also on the side. By displaying the background image on the side surface of the subject, it is possible to produce an atmosphere that is more suitable for photographing for the subject. When the background image is displayed on the side, the luminance of the background image may be changed between the first shooting and the second shooting, as in the case of the background image displayed on the back side. Does not affect the image, so the image may be taken without changing the luminance. For example, when the brightness of the background image behind the subject is changed by turning on / off the background illuminator, if the background image is a sea or sky scene, it is better not to erase the side background image. It may be effective because of the occurrence of reflection, and the display of the background image on the side is preferably used selectively.

  Furthermore, the portrait creation method, the portrait creation system, and the program according to the present invention are not only used for an image photographed by the DSC 23, but, for example, instead of the DSC 23 shown in FIGS. (Not shown) is controlled by the image capturing control unit 21, and the film that has been imaged is developed to obtain a developed photographic film 72, an image is sampled by the film scanner 12, and an image signal is input to the image input unit 14. Then, the same result as in the above-described embodiment can be obtained by combining the shooting frame information of the film camera sent from the shooting control unit and the image information from the film scanner 12 in combination with the image processing unit 50.

  In addition, the detailed configuration and detailed operation of the captured image processing system 100 can be changed as appropriate without departing from the spirit of the present invention.

It is a block diagram which shows the functional structure of the picked-up image processing system 100 which concerns on this invention. It is a figure which shows the external appearance of the imaging | photography set in the imaging | photography studio to which the captured image processing system 100 which concerns on this invention is applied. It is a block diagram which shows the structure of the imaging | photography part 20 of FIG. 1 in detail. It is a flowchart which shows the portrait imaging | photography sequence A performed in the picked-up image processing system 100 of FIG. 2 is a flowchart showing a portrait shooting sequence B executed in the shot image processing system 100 of FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Shooting image processing system 11 FB scanner 12 Film scanner 13 Memory driver 14 Image input part 20 Shooting part 21 Shooting control part 22 Illumination part 23 DSC
24 communication line 25 background member 26 photographing operation unit 30 image display unit 40 instruction input unit 50 image processing unit 51 preprocessing unit 52 subject image extraction unit 53 image composition unit 60 image output unit 61 image output control unit 62 image print unit 63 media Writing part

Claims (15)

  A portrait creation method, comprising: displaying a background image behind the subject before photographing the subject; and stopping displaying the background image when photographing the subject.   The subject image information is extracted by detecting the contour of the subject image area from the photographed image information obtained by the photographing, and background image information is combined with the extracted subject image information. How to create a portrait of   A first image is captured by displaying a background image behind the subject, a second image is captured by changing the luminance of the background image, and the first captured image information obtained by the first imaging and the first image A portrait creation method, wherein subject image information is extracted using second photographed image information obtained by second photographing, and background image information is combined with the extracted subject image information.   4. The portrait creation method according to claim 2, wherein the background image information combined with the extracted subject image information approximates the displayed background image.   4. The portrait creation method according to claim 2, wherein the background image information to be combined with the extracted subject image information is related to the displayed background image. Background display means for displaying a background image behind the subject;
Photographing means for photographing the subject;
Shooting control means for displaying a background image on the background display means before shooting the subject, and for stopping the display of the background image on the background display means when shooting the subject;
A portrait creation system characterized by comprising: Subject image extraction means for extracting the subject image information by detecting the contour of the subject image region from the photographed image information obtained by the photographing;
Image synthesizing means for synthesizing background image information with the extracted subject image information;
The portrait creation system according to claim 6, further comprising: Background display means for displaying a background image behind the subject;
Photographing means for photographing the subject;
A shooting control unit configured to display the background image on the background display unit to perform the first shooting, and to control the background image display unit to perform the second shooting by changing the luminance of the background image;
Subject image extraction means for extracting subject image information using the first photographed image information obtained by the first photographing and the second photographed image information obtained by the second photographing;
Image synthesizing means for synthesizing background image information with the extracted subject image information;
A portrait creation system characterized by comprising:   9. The portrait creation system according to claim 7, wherein the background image information to be synthesized with the extracted subject image information is approximate to the displayed background image.   9. The portrait creation system according to claim 7, wherein the background image information to be combined with the extracted subject image information is related to the displayed background image. On the computer,
A program for realizing a function of displaying a background image behind the subject before photographing the subject and stopping the display of the background image when photographing the subject. In addition to the computer,
A function of detecting the contour of the subject image from the photographed image information obtained by the photographing and extracting the subject image information;
A function of combining background image information with the extracted subject image information;
12. The program according to claim 11, wherein the program is realized. On the computer,
A function of performing a first shooting by displaying a background image behind a subject and performing a second shooting by changing the luminance of the background image;
A function of extracting subject image information using first captured image information obtained by the first photographing and second photographed image information obtained by the second photographing;
A function of combining background image information with the extracted subject image information;
A program to realize   14. The program according to claim 12, wherein the background image information to be combined with the extracted subject image information is approximate to the displayed background image.   14. The program according to claim 12, wherein the background image information to be combined with the extracted subject image information is related to the displayed background image.

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