JP4368783B2 - Imaging device - Google Patents

Description

  The present invention relates to a photographing apparatus that generates and records an image signal representing a subject in accordance with a photographing operation.

  Conventionally, as a photographing apparatus as described above, a specific subject signal representing a specific subject is extracted from a video signal obtained by performing image processing on an image signal output from an image sensor, and based on the specific subject signal. There has been proposed a video camera that controls a shutter or the like to individually process a specific subject and other backgrounds to give a portrait effect or correct a color of the specific subject (Patent Document 1). reference).

A high-frequency component signal is extracted from a video signal obtained by performing image processing on the image signal output from the image sensor, and an image signal representing the main subject is focused on the maximum contrast point based on the extracted signal. There has been proposed a digital camera that separately identifies a main subject represented by the image signal and other subjects (background) (see Patent Document 2).
JP-A-5-110936 JP 2004-151609 A

  In the above-described photographing apparatus, photography is performed by obtaining an image signal representing a photographed image in a state where the main subject is stopped and the background is flowing while following the moving main subject with the line of sight of the photographing device. A photographing technique called “panning” (hereinafter simply referred to as panning) is known. According to the panning, a clear image can be obtained for the main subject, and an image that flows in the direction in which the photographing apparatus is moved can be obtained for the background, so that a photograph with a sense of speed can be taken.

  Here, when the techniques proposed in Patent Documents 1 and 2 are adopted for panning, the following problems occur.

  The technique proposed in Patent Document 1 needs to extract a specific subject signal representing a specific subject in advance in providing a portrait effect, color correction of the specific subject, and the like. For this reason, when this technique is adopted for panning, the main subject that is moving is chased with a delay, and thus there is a problem of missing a photo opportunity.

  Further, the technique proposed in Patent Document 2 obtains an image signal representing a main subject by focusing based on a signal of a high frequency component extracted from a video signal, and further obtains a main subject and background represented by the image signal. Since this technique is used for separation and identification, if this technique is adopted for panning, the main subject that is moving is followed after being focused, and thus there is a problem of missing a photo opportunity.

  In general, panning shots require advanced shooting techniques, such as setting the shutter speed to a slower shutter speed while following the main subject while moving the camera while looking at the main subject while moving. Is done. Therefore, there is a problem that panning is difficult for beginners.

  SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a photographing apparatus that can easily perform a panning shot even for a beginner.

The imaging device of the present invention that achieves the above object is an imaging device that generates and records an image signal representing a subject in accordance with an imaging operation.
There is a panning mode that obtains an image signal representing a captured image in a state in which the main subject is stopped while the main subject is moving with the line of sight of the photographing device and the background is flowing, and operates in the panning mode ,
Separating means for separating the main subject and the background;
Image processing means for performing contour emphasis processing for the main subject and processing for enhancing the image flow for the background are provided.

  The photographing apparatus of the present invention represents a photographed image in both the state where the main subject is stopped and the background flows while the main subject being moved is followed by the line of sight of the photographing device in the panning mode. An image signal is obtained. For this reason, a technique proposed in Patent Documents 1 and 2 that extracts a specific subject signal representing a specific subject in advance, or obtains an image signal representing a main subject by focusing on a high-frequency component signal is adopted. Compared to the case, the image signal representing the main subject is not obtained with a delay, and therefore, it is prevented to miss the photo opportunity. Further, based on the image signal obtained in the panning mode, the main subject and the background are separated, and the contour emphasis processing is performed on the main subject and the image flow is enhanced on the background. Therefore, it is possible to easily obtain a clear image for the main subject and an image that flows in the direction in which the photographing apparatus is moved for the background. Therefore, even a beginner can easily perform panning.

Here, the photographing apparatus includes a moving image display means for photographing and displaying a moving image for angle of view confirmation before performing a photographing operation.
It is preferable that the separating means separates the main subject and the background in the photographed image by detecting the movement of each part of the successively moving image.

  In this way, it is possible to reliably check the main subject in the captured image and perform panning, and to separate the main subject and the background with high accuracy.

In addition, a detection means for detecting the direction of panning is provided,
The separation means separates the main subject and the background in the photographed image based on a predetermined spatial frequency component in each part of the photographed image with respect to the panning direction detected by the detection means. Is also a preferred embodiment.

  In this way, the main subject and the background can be easily separated with high accuracy in the panning direction.

In addition, this photographing apparatus is provided with a moving image display means for photographing and displaying a moving image for angle of view confirmation before performing a photographing operation,
It is also preferable that the detection means detects the direction of panning by detecting the movement of each part of a sequentially moving image.

  In this way, it is possible to reliably check the main subject in the captured image and perform panning, and to detect the panning direction with high accuracy.

  It is also preferable that the detection means is an acceleration sensor that detects the direction of panning by detecting acceleration acting on the photographing apparatus.

  In this way, the direction of panning can be detected with a simple configuration.

  According to the photographing apparatus of the present invention, even a beginner can easily perform a panning.

  Embodiments of the present invention will be described below.

  FIG. 1 is an external perspective view of a digital camera, which is a first embodiment of a photographing apparatus of the present invention, as viewed from the front obliquely above.

  A digital camera 10 shown in FIG. 1 is a digital camera that generates and records an image signal representing a subject in accordance with a shooting operation, and details thereof will be described later. A moving main subject is indicated by the line of sight of the digital camera 10. There is a panning mode for obtaining an image signal representing a captured image in a state where the main subject is stopped while chasing and the background is flowing.

  A zoom lens barrel 10_1 having a photographing lens 10_1a, which is an optical zoom lens, is provided at the center of the front surface of the digital camera 10 shown in FIG. In addition, on the front upper portion of the digital camera 10, a flash light emitting device 10_2 that emits flash light in synchronization with photographing and a light amount of the flash light are detected in order to control the light amount of the flash light from the flash light emitting device 10_2. A flash light control sensor 10_3 and an optical viewfinder objective window 10_4 are provided.

  Further, on the left side of the front surface of the digital camera 10, a grip 10_5 having a shape that can securely hold the digital camera 10, a self-timer lamp 10_6 that blinks when the self-timer is activated, and a microphone 10_7 that picks up sound. And are provided.

  Further, on the upper surface of the digital camera 10, a shutter button 10_8, a mode dial 10_9 for performing various settings, and a power button 10_10 are provided.

  Further, a speaker 10_11 is provided on the right side surface of the digital camera 10 shown in FIG.

  FIG. 2 is an external view of the digital camera shown in FIG. 1 as viewed from above.

  In this digital camera 10, in addition to the flash light emitting device 10_2, the shutter button 10_8, the mode dial 10_9, and the power button 10_10 described above, a flash light emitting device is provided on an inclined surface provided from the upper side to the lower side of the digital camera 10. A pop-up button 10_12 for popping up 10_2 is provided. Further, the mode dial 10_9 includes a character AUTO indicating the auto mode, P indicating the program auto mode, S indicating the shutter speed priority auto mode, A indicating the aperture priority auto mode, M indicating the manual mode, and a picture indicating the moving image mode. , And four pictures showing four scene positions (night view, sports, landscape, person scene position) are printed. A desired mode can be set by rotating the mode dial 10_9. Here, each mode will be described.

  The auto mode (AUTO) is a mode for controlling all of exposure, white balance and the like on the camera side.

  The program auto mode (P) is a mode for automatically setting the shutter speed and the aperture.

  The shutter speed priority auto mode (S) is a mode for preferentially setting the shutter speed.

  The aperture priority auto mode (A) is a mode for preferentially setting the aperture.

  The manual mode (M) is a mode for freely setting the shutter speed and the aperture.

  The moving image mode indicated by the picture next to the manual mode (M) is a mode for moving image shooting.

  In addition, there are four scene position modes for selecting four shooting scenes (night view, sports, landscape, and person) clockwise as viewed from the moving image mode.

  The scene position mode for night view is a mode suitable for shooting taking advantage of the atmosphere such as sunset view and night view.

  The scene position mode for sports is a mode suitable for shooting a moving body including a sports scene.

  The scene position mode for landscape is a mode suitable for photographing landscapes in the daytime such as buildings and mountains.

  The scene position mode for a person is a mode suitable for portrait photography that can make skin color appear more beautiful.

  FIG. 3 is an external view of the digital camera shown in FIG. 1 as viewed from the back.

  On the upper back of the digital camera 10 shown in FIG. 3, an optical viewfinder eyepiece window 10_22, a finder lamp 10_23 that lights up when the preparation for photographing is completed or blinks during photographing, and an exposure correction button 10_24 are pressed. Is provided with a wide-angle zoom button 10_25 for zooming up to the wide-angle side (wide side), a telephoto zoom button 10_26 for zooming up to the telephoto side (tele-side) when pressed, and a mode switch 10_27 for switching between the shooting mode and the playback mode. It has been.

  Further, below the mode switch 10_27, a photo mode button 10_30, a cross button 10_31, a menu / OK button 10_32, and a DISP / BACK button 10_33 are provided. Furthermore, a liquid crystal monitor 10_34 is provided at the center of the back surface of the digital camera 10.

  The photo mode button 10_30 is a button for setting the number of pixels, sensitivity, color, number of prints, and the like.

  When a menu screen or the like is displayed on the liquid crystal monitor 10_34, the cross button 10_31 is operated by operating the four buttons of the upper button 10_31a, the lower button 10_31b, the left button 10_31c, and the right button 10_31d of the cross key 10_31. Menu selection can be made. The left button 10_31c is also a button for switching whether or not to perform macro shooting. When the button is pressed once, the macro shooting mode is set, and when pressed again, the macro shooting mode is canceled. Furthermore, the right button 10_31d is also a button that plays the role of a flash button. Every time the right button 10_31d is pressed, the flash state is changed as follows: auto flash → red eye reduction flash → forced flash → flash prohibition → slow shutter flash → auto flash. It is also a button for switching repeatedly.

  The menu / OK button 10_32 is a button for displaying various menus at the time of shooting or reproduction and determining a selected menu.

  The DISP / BACK button 10_33 serves as both a DISP button and a BACK button. In the case of the role of the DISP button, it is a button for switching the state of the screen displayed on the liquid crystal monitor 10_34. For example, the display of the liquid crystal monitor 10_34 is turned on / off during shooting, and the character display is turned on / off during reproduction. To do. On the other hand, in the case of the role of the BACK button, it is a button for returning or canceling the operation state by the MENU / OK button 10_32 or the like.

  The liquid crystal monitor 10_34 displays an image composed of image data generated by capturing subject light with the digital camera 10, information at various settings, and the like. Further, the liquid crystal monitor 10_34 also serves as a moving image display means according to the present invention, which captures and displays a moving image for angle of view confirmation before performing a photographing operation.

  In addition, the digital camera 10 includes a panning mode button 10_35 between the photo mode button 10_30 and the DISP / BACK button 10_33. This panning mode button 10_35 is set to a panning mode that obtains an image signal representing a captured image in a state where the main subject is stopped and the background is flowing while following the moving main subject with the line of sight of the digital camera 10. When the button is pressed once, the panning mode is set. When the button is pressed again, the set panning mode is canceled.

  FIG. 4 is a block diagram showing a circuit configuration of the digital camera shown in FIG.

The digital camera 10, a zoom lens 10_1A ₁ and the focusing lens 10_1A ₂ constituting the taking lens 10_1A described above, the image pickup device (CCD which converts the subject image focused through the imaging lens 10_1A into an analog signal 10_41).

  The digital camera 10 also includes an A / D conversion circuit 10_42 that generates an analog image signal by A / D converting an analog image signal from the CCD 10_41, and a digital image from the A / D conversion circuit 10_42. An image input controller 10_43 that transmits a signal to the bus line 10_100 is provided.

  Further, the digital camera 10 is provided with an image signal processing circuit 10_44. The image signal processing circuit 10_44 serves as a separating unit according to the present invention that separates the main subject and the background represented by the digital image signal input via the bus line 10_100. Specifically, the main subject and the background in the captured image are separated based on a predetermined spatial frequency component in the panning direction detected by an acceleration sensor 10_55 described later in each part of the captured image. The image signal processing circuit 10_44 also serves as an image processing means according to the present invention that performs contour enhancement processing for the main subject and processing for enhancing the image flow for the background. Further, the image signal processing circuit 10_44 converts the digital image signal input via the bus line 10_100 into a YC signal represented by luminance (Y) and color (C).

  The digital camera 10 also includes a compression processing circuit 10_45 that compresses the YC signal input via the bus line 10_100, and an NTSC (National TV Standards Committee) signal that is input via the bus line 10_100. Is provided. The NTSC signal output from the video encoder 10_46 is supplied to the liquid crystal monitor 10_34 described above, and an image is displayed on the liquid crystal monitor 10_34.

Further, the digital camera 10 includes a CPU 10_47 that controls the entire digital camera 10, motor drivers 10_48 and 10_49 that drive the zoom lens 10_1a ₁ and the focus lens 10_1a ₂ , and the shutter button 10_8 described above. .

  In addition, the digital camera 10 includes an AE detection circuit 10_50 that detects the field luminance based on the digital image signal.

  Furthermore, the digital camera 10 is provided with an AF detection circuit 10_51 for focusing on the maximum contrast point by contrast detection based on a digital image signal.

  The digital camera 10 also includes a memory (SDRAM) 10_52 for storing digital image signals and a medium for recording the YC signal compressed by the compression processing circuit 10_45 on a recording medium 10_54 that is a portable recording medium. A controller 10_53 is provided.

  Further, the digital camera 10 is provided with an acceleration sensor 10_55. The acceleration sensor 10_55 corresponds to an example of detection means for detecting the direction of panning shot according to the present invention, and specifically detects the direction of panning shot by detecting acceleration acting on the digital camera 10.

  FIG. 5 is a flowchart of a processing routine in the panning mode executed by the digital camera shown in FIG. 4, and FIG. 6 is a diagram illustrating an image for explaining the flowchart shown in FIG. 5 and the direction of panning of the digital camera. FIG. 7 is a diagram illustrating a state in which a captured image and a main subject in the captured image are separated from a background.

  When the panning mode button 10_35 is pressed, the panning mode is turned on and the processing routine shown in FIG. 5 is executed.

  First, in step S1, the motion of the digital camera 10 is examined by the acceleration sensor 10_55. That is, the direction of panning is detected by detecting the acceleration acting on the digital camera 10. For example, as shown in FIG. 6A, when performing panning with an object B displayed on the liquid crystal monitor 10_34 moving from the left direction indicated by the arrow A toward the right as the main subject, the digital camera 10 It is rotated from left to right as indicated by an arrow C shown in FIG. The acceleration sensor 10_55 detects acceleration acting on the digital camera 10.

  Next, in step S2, it is determined whether or not the shutter button 10_8 has been pressed. If it is determined that the shutter button 10_8 has not been pressed, the process returns to step S1. On the other hand, if it is determined that the shutter button 10_8 has been pressed, the process proceeds to step S3.

  In step S3, an HPF (high-pass filter) is applied to the image divided into fixed sizes according to the changed orientation of the digital camera 10. Specifically, it is assumed that the shutter button 10_8 is pressed and an image D as shown in FIG. 7A is obtained. As for the background, an image portion D1 that flows in the direction in which the digital camera 10 is moved is obtained, and for the main subject, an image portion D2 that is clearer than the background is obtained by shooting while following the line of sight of the digital camera 10. Here, in order to extract the signal of the high frequency component with respect to the direction in which the digital camera 10 is moved, the HPF (high-pass filter) in the direction (here, the horizontal direction) corresponding to the direction in which the digital camera 10 is moved is shown in FIG. Is applied (applied) to each block D3 having a certain size. As shown in FIG. 7B, since the background is a flowing image, there are few high-frequency components. Conversely, since the main subject is a clear image, there are many high-frequency components. Using this fact, the main subject and the background are separated. Note that the smaller the size of the block D3, the higher the accuracy of background separation.

  Next, in step S4, outline enhancement processing is performed on the main subject. Thereby, some blurring can be compensated. In step S5, a lateral blur effect is applied to enhance the image flow with respect to the background. Thereafter, this processing routine is terminated.

  FIG. 8 is a diagram showing an image obtained by the processing routine in the panning mode shown in FIG.

  An image E shown in FIG. 8 includes an image portion E1 representing the background and an image portion E2 representing the main subject. As for the background, since the blur effect in the horizontal direction is applied, the flow in the image portion E1 is more emphasized. In addition, since the outline enhancement process is performed on the main subject, a clear image portion E2 is obtained.

  Here, the blur effect is obtained by blending adjacent pixels. Also, the amount of flow varies depending on the distance to be blended. Hereinafter, a description will be given with reference to FIG.

  FIG. 9 is a diagram showing an original image before the blur effect is applied, an image with a weak blur effect, and an image with a strong blur effect.

  FIG. 9A shows an original image F taken by panning before the blur effect is applied. This original image F is composed of an image F1 representing the background and an image F2 representing the main subject. Here, the flow amount of the image F1 representing the background is small.

  Further, a weak blur effect is applied to the image G1 representing the background constituting the image G shown in FIG. On the other hand, contour enhancement is performed on the image G2 representing the main subject. The flow amount of the image G1 representing the background is larger than the flow amount of the image F1 shown in FIG. Therefore, a photograph with a sense of speed is obtained.

  Further, a strong blur effect is applied to the image H1 representing the background constituting the image H shown in FIG. In addition, contour enhancement is performed on the image H2 representing the main subject. The flow amount of the image H1 representing the background is larger than the flow amounts of the images F1 and G1 shown in FIGS. 9 (a) and 9 (b). Therefore, a photograph with a sense of speed is obtained.

  FIG. 10 is a block diagram showing a circuit configuration of a digital camera which is the second embodiment of the photographing apparatus of the present invention.

  The same components as those of the digital camera 10 shown in FIG. 4 described above are denoted by the same reference numerals, and redundant description is omitted.

  The digital camera 20 shown in FIG. 10 differs from the digital camera 10 shown in FIG. 4 in that the acceleration sensor 10_55 is deleted and the image signal processing circuit 10_44 is replaced with an image signal processing circuit 20_44. .

  The image signal processing circuit 20_44 plays a role of a separating unit according to the present invention that separates the main subject and the background represented by the digital image signal input through the bus line 10_100. Specifically, the main subject and the background in the photographed image are separated by detecting the movement (optical flow) of each part of the sequentially moving image. The image signal processing circuit 20_44 performs contour enhancement processing for the main subject and processing for enhancing the image flow for the background.

  FIG. 11 is a flowchart of a processing routine in the panning mode executed by the digital camera shown in FIG. 10, and FIG. 12 is a diagram showing an image for explaining the flowchart shown in FIG. 11 and the direction of panning of the digital camera. FIG. 13 is a diagram showing a state in which a captured image and a main subject in the captured image are separated from a background.

  When the panning mode button 10_35 is pressed, the panning mode is turned on and the processing routine shown in FIG. 11 is executed. In the state where the panning mode is turned on, the immediately preceding image is always stored in the memory 10_52 in order to check the optical flow.

  First, in step S11, it is determined whether the shutter button 10_8 has been pressed. If it is determined that the shutter button 10_8 has not been pressed, the process returns to step S11. On the other hand, if it is determined that the shutter button 10_8 has been pressed, the process proceeds to step S12. In this case, as shown in FIG. 12A, a panning shot is performed with an object K displayed on the liquid crystal monitor 10_34 moving from the left direction to the right direction indicated by an arrow J as the main subject. Assuming that the shutter button 10_8 is pressed while rotating the camera 20 from left to right as indicated by an arrow L shown in FIG. 12B, the process proceeds to step S12.

  In step S12, the optical flow is examined by comparing the image captured by the digital camera 20 with the image captured and stored immediately before the image.

  Here, it is assumed that the shutter button 10_8 is pressed and an image M as shown in FIG. 13A is obtained. As for the background, an image portion M1 that flows in the direction in which the digital camera 20 is moved is obtained, and for the main subject, an image portion M2 that is clearer than the background is obtained by shooting while following the line of sight of the digital camera 20. Here, the vector (optical flow) of each point on the screen shown in FIG. 13B is examined by comparing the latest image M with the immediately preceding stored image. Since the image portion M1 representing the background flows in the direction in which the digital camera 20 is moved, the optical flow is large. On the contrary, the main subject is the image portion M2 obtained by shooting while following the line of sight of the digital camera 20, and is fixed, so the optical flow is small. Using this fact, the main subject and the background are separated.

  Further, in step S13, contour enhancement processing is performed on the main subject. Thereby, some blurring can be compensated. Also, in step S14, a lateral blur effect is applied to enhance the image flow for the background. Thereafter, this processing routine is terminated.

  FIG. 14 is a block diagram showing a circuit configuration of a digital camera which is the third embodiment of the photographing apparatus of the present invention.

  The same components as those of the digital camera 10 shown in FIG. 4 described above are denoted by the same reference numerals, and redundant description is omitted.

  The digital camera 30 shown in FIG. 14 is different from the digital camera 10 shown in FIG. 4 in that the acceleration sensor 10_55 is deleted and the image signal processing circuit 10_44 is replaced with an image signal processing circuit 30_44. .

  The image signal processing circuit 30_44 plays a role of detection means for detecting the direction of panning as referred to in the present invention, and the image signal processing circuit 30_44 sequentially moves for each part of the moving image (optical flow). The direction of panning is detected by detecting. The image signal processing circuit 30_44 separates the main subject and the background in the captured image based on the predetermined spatial frequency component in the direction of panning detected as described above for each part of the captured image. To do. Further, the image signal processing circuit 30_44 performs a contour enhancement process for the main subject and a process for enhancing the image flow for the background.

  FIG. 15 is a flowchart of a processing routine in the panning mode executed by the digital camera shown in FIG. 14, and FIG. 16 is a diagram showing an image for explaining the flowchart shown in FIG. 15 and the direction of panning of the digital camera. FIG. 17 is a diagram illustrating a state in which a captured image and a main subject in the captured image are separated from a background.

  When the panning mode button 10_35 is pressed, the panning mode is turned on and the processing routine shown in FIG. 15 is executed. In the state where the panning mode is turned on, the immediately preceding image is always saved in order to check the optical flow.

  First, in step S21, it is determined whether or not the shutter button 10_8 has been pressed. If it is determined that the shutter button 10_8 has not been pressed, the process returns to step S21. On the other hand, if it is determined that the shutter button 10_8 has been pressed, the process proceeds to step S22. Here, as shown in FIG. 16A, when the panning is performed with an object O displayed on the liquid crystal monitor 10_34 moving from the left direction to the right direction indicated by the arrow N as the main subject, Assuming that the shutter button 10_8 is pressed while rotating the camera 30 from left to right as indicated by an arrow P shown in FIG. 16B, the process proceeds to step S22.

  In step S22, the optical flow is examined by comparing an image captured by the digital camera 30 with an image captured and stored immediately before the image.

  Here, it is assumed that an image Q as shown in FIG. 17A is obtained by pressing the shutter button 10_8. As for the background, an image portion Q1 that flows in the direction in which the digital camera 30 is moved is obtained, and for the main subject, an image portion Q2 that is clearer than the background is obtained by shooting while following the line of sight of the digital camera 30. Here, the vector (optical flow) of each point on the screen shown in FIG. 17B is examined by comparing the latest image Q with the immediately preceding stored image. Here, there are many leftward optical flows as a whole, and it can be determined that the digital camera 30 is shooting while rotating from the left to the right or moving to the right.

  Next, in step S23, an HPF (high pass filter) is applied to the image divided for each fixed size in accordance with the changed orientation of the digital camera 30. Specifically, as described with reference to FIG. 7, in order to extract a signal of a high-frequency component with respect to the direction in which the digital camera 10 is moved, a direction corresponding to the direction in which the digital camera 30 is moved (here, the horizontal direction). ) HPF (High Pass Filter) is applied (applied) to each block of a certain size. Here, since the background is a flowing image, there are few high-frequency components. Conversely, since the main subject is a clear image, there are many high-frequency components. Using this fact, the main subject and the background are separated.

  Next, in step S24, contour enhancement processing is performed on the main subject. Thereby, some blurring can be compensated. In step S25, a lateral blur effect is applied to enhance the image flow with respect to the background. Thereafter, this processing routine is terminated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a digital camera that is a first embodiment of a photographing apparatus according to the present invention when viewed obliquely from the front. It is the external view which looked at the digital camera shown in FIG. 1 from the top. It is the external view which looked at the digital camera shown in FIG. 1 from the back. It is a block diagram which shows the circuit structure of the digital camera shown in FIG. 5 is a flowchart of a processing routine in a panning mode executed by the digital camera shown in FIG. 4. It is a figure which shows the direction for the image for demonstrating the flowchart shown in FIG. 5, and the panning of a digital camera. It is a figure which shows a mode that the main to-be-photographed object and background in a picked-up image and a picked-up image are isolate | separated. FIG. 6 is a diagram showing an image obtained by a processing routine in the panning mode shown in FIG. 5. It is a figure which shows the original image before a blur effect is given, the image to which the blur effect was weakened, and the image to which the blur effect was strong. It is a block diagram which shows the circuit structure of the digital camera which is 2nd Embodiment of the imaging device of this invention. 12 is a flowchart of a processing routine in a panning mode executed by the digital camera shown in FIG. 10. It is a figure which shows the direction for the image for demonstrating the flowchart shown in FIG. 11, and the panning of a digital camera. It is a figure which shows a mode that the main to-be-photographed object and background in a picked-up image and a picked-up image are isolate | separated. It is a block diagram which shows the circuit structure of the digital camera which is 3rd Embodiment of the imaging device of this invention. It is a flowchart of the process routine in the panning mode performed with the digital camera shown in FIG. It is a figure which shows the direction for the image for demonstrating the flowchart shown in FIG. 15, and the panning of a digital camera. It is a figure which shows a mode that the main to-be-photographed object and background in a picked-up image and a picked-up image are isolate | separated.

Explanation of symbols

10, 20, 30 Digital camera 10_1 Zoom lens barrel 10_1a Shooting lens 10_1a ₁ Zoom lens 10_1a ₂ Focus lens 10_2 Flash light emitting device 10_3 Flash dimming sensor 10_4 Optical viewfinder objective window 10_5 Grip 10_6 Self-timer lamp 10_7 Macro button 10_8 Shutter button 10_9 Mode dial 10_10 Power button 10_11 Speaker 10_12 Pop-up button 10_22 Optical viewfinder eyepiece window 10_23 Viewfinder lamp 10_24 Exposure compensation button 10_25 Wide-angle zoom button 10_26 Tele zoom button 10_27 Mode switch 10_30 Photo mode button 10_31 Cross button 10_31a Up button 10_31a Up button 10_31a Left button 10_31d Right button 10_32 Menu / OK button 10_33 DISP / BACK button 10_34 LCD monitor 10_35 Panning mode button 10_41 Image sensor (CCD)
10_42 A / D conversion circuit 10_43 Image input controller 10_44, 20_44, 30_44 Image signal processing circuit 10_45 Compression processing circuit 10_46 Video encoder 10_47 CPU
10_48, 10_49 Motor driver 10_50 AE detection circuit 10_51 AF detection circuit 10_52 Memory (SDRAM)
10_53 Media controller 10_54 Recording medium 10_55 Acceleration sensor 10_100 Bus line

Claims (1)

In a photographing apparatus that generates and records an image signal representing a subject in accordance with a photographing operation,
There is a panning mode that obtains an image signal representing a photographed image in a state where the main subject is stopped while the main subject is moving with the line of sight of the photographing apparatus and a background is flowing, and operates in the panning mode ,
Separating means for separating the main subject and the background;
Image processing means for performing outline emphasis processing on the main subject and processing for enhancing the flow of the image on the background ;
Detecting means for detecting the direction of panning,
The separating means separates the main subject and the background in the photographed image based on a predetermined spatial frequency component in each part of the photographed image with respect to the panning direction detected by the detecting means. ,further,
This photographing apparatus is provided with a moving image display means for photographing and displaying a moving image for angle of view confirmation before performing a photographing operation,
An imaging apparatus, wherein the detection means detects a direction of a panning shot by detecting a motion of each part of a sequentially moving image .

Images