JP2006033418A - Image pickup system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display an object with perspective as an image picked up from the front in a system for monitoring a deep object such as a train from an oblique direction. <P>SOLUTION: An object image is extracted from the inside of a screen. An image picked up from the front is displayed after automatically generating it by magnifying and processing every part of the object image. The object image is stored with image quality higher than the displaying and storing image quality. Only an partially magnified image is displayed or recorded. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a monitoring system, and more particularly, to a system for imaging a monitoring area having a depth such as a train or a platform of a station with an imaging device and recording the acquired image.

  Conventionally, in the case of a system in which a subject existing in a deep monitoring area such as a train is imaged by an imaging device (hereinafter referred to as a camera) such as a television camera and the acquired image is viewed on a monitor or the like, a monitor or the like The images of trains, platforms (hereinafter referred to as “homes”), passengers, station staff, and the like displayed on the screen are large in front of the screen and small in the back of the screen (see Patent Document 1). Therefore, it becomes more difficult to visually confirm passengers and to confirm safety as they go deeper.

  In order to monitor whether passengers get caught between the platform and the train, jump into the train, or fall from the platform to the track, it is necessary to make a quick check. In particular, in a system in which a driver confirms safety in train operation such as boarding / exiting monitoring like a one-man vehicle, quick and reliable visibility is particularly strongly required.

  In such a system, not only the display of the image but also the monitoring image is usually recorded on the recording device and stored for a certain period of time, but only the portion to be recorded is enlarged and recorded. No processing has been performed.

  For images acquired with a digital camera, etc., manually specify the image area to be enlarged using image processing software as a technology for converting a deep subject into an image captured from the front (perspective correction). There is a way to enlarge. However, there is no method for enlarging and displaying a subject's depth by automatically processing a moving image such as an image acquired by a surveillance camera in real time using hardware.

  Conventionally, when an image acquired by imaging the inside of a monitoring area is recorded on a recording device, the image acquired by the camera is stored as it is. In the recording apparatus, the image quality of recorded and reproduced images is fixed unless re-set from the outside. Therefore, when an image recorded in the recording device is reproduced and a partial area (image area) that the image is desired to be viewed is enlarged by image processing, the image quality deteriorates.

  A conventional monitoring system for monitoring a monitoring area having a depth will be further described with reference to FIG. FIG. 1 is a diagram illustrating a schematic configuration of a system for monitoring a monitoring area having a depth, such as monitoring of the status of a railway platform and monitoring of the status of getting on and off a train, and a display example of a monitor screen. Fig. 1 (a) shows the schematic configuration of the system as seen from above. 1-1 and 1-2 are cameras, and 2-1 to 2-4 are train vehicles. The camera, home, and vehicle only show some, not all. Also, illustrations of other objects that should be on the platform and the train, such as passengers, are omitted to avoid complexity. Here, the monitor and recording device are not shown in FIG. 1, but are installed in, for example, a driver's seat, a conductor's seat, a station office, or a monitoring center, and either cameras 1-1 and 1-2, wireless or wired, or These are combined by well-known transmission means (not shown, for example, a wireless local area network (LAN), optical communication, or the like.

  Fig. 1 (b) shows an example of the display on the monitor screen of the images acquired by cameras 1-1 and 1-2 shown in Fig. 1 (a). 10-1 is the image displayed in display example 10 on the monitor screen, and 20-1 and 20-2 are the images displayed in display example 20. In addition, the number of cameras and monitors varies depending on the needs of home length, shape, obstacles, number of passengers, budget, and the like.

  The railroad platform is narrow, and a camera is installed in the platform in an optimal position to capture the train entrance and exit due to obstacles such as passengers, pillars, guide boards, clocks, advertisements, signal lights, etc. There are many restrictions to do this, and the home is not always straight, and may be on a slope or have a step. For this reason, the viewing direction of the camera must be installed in a direction almost parallel to the traveling direction of the train car, as well as being installed so as to look down from the ceiling, and the number of cameras to be installed is also limited. Is done.

  Therefore, the cameras 1-1 and 1-2 in FIG. 1 (a) are connected by the transmission means, and the monitor displaying the images acquired by the cameras 1-1 and 1-2 is shown in FIG. 1 (b). As shown in Display Examples 10 and 20, the vehicle in front of Cameras 1-1 and 1-2 appears large, and the vehicle in the back appears small.

  As shown in the upper part of Fig. 1 (b), in the case of a single screen that displays an image 10-1 that is a combination of images taken by cameras 1-1 and 1-2 (not combined when there is only one camera) In display example 10 of, it is possible to monitor not only near the entrance / exit but also the inside of the platform, but the depth of the screen (mainly the train entrance / exit and the car side lights) is small, making it difficult to see the back of the screen. In addition, as shown in the lower part of Fig. 1 (b), the image 20-1 and 20-2 captured by the cameras 1-1 and 1-2 are displayed separately as shown in the display example 20 (split image). After the composition, for example, when divided and displayed for each vehicle, the camera is also provided at the back of the screen, so it can be seen to the back of the vehicle, but the inside of the home is cut, and the screen is entirely It's hard to see.

In addition, when an image captured by a normal camera is enlarged with an electronic zoom on a portion that needs to be monitored (for example, particularly in the vicinity of a crowded entrance / exit), the image quality deteriorates and monitoring is particularly necessary. Although the portion is enlarged, the visibility is not improved due to the poor resolution. For this reason, even if an image is captured using a high-resolution camera (for example, a megapixel camera) and the image is enlarged and displayed without deterioration of the image quality, the image recorded and reproduced Since the image quality is fixed, the image quality deteriorates when an image recorded from the recording device is reproduced and a partial area (image area) to be viewed of the image is enlarged by image processing.
Japanese Patent Application Laid-Open No. 11-124036

  The above-described prior art has a drawback that safety cannot be confirmed quickly and reliably. Also, when investigating the situation and cause of an accident or confirming safety by playing back recorded images, the image quality deteriorates even if the image portion you want to view is enlarged. There was a drawback that could not be done.

An object of the present invention is to provide a monitoring system that eliminates the above-described drawbacks and improves the visibility on a monitor screen.
In addition, another object of the present invention is to remove the above-mentioned drawbacks and save the recorded image with an image quality that improves the visibility on the monitor screen when recording on the recording device. The object is to provide a monitoring system in which the image quality of the part to be viewed does not deteriorate.

  By automatically detecting the depth of the subject and enlarging the back part of the screen, which is displayed in a small size, and generating an image that virtually captures the subject from the front, the depth of the subject is equal to or equal to the front of the subject. The purpose is to monitor and improve visibility.

  Also, when recording this image on a recording device, it is possible to record only the portion that is desired to be viewed without degrading the image quality by storing the image frame in advance with a higher image quality than the recording image quality and enlarging the subject part. .

  In order to achieve the above object, the image pickup system of the present invention enlarges the image of the back of the subject and displays it on the monitor in the same size as the front of the subject. It is characterized by being enlarged so as to be uniform as seen from the front.

  In order to achieve the above object, the imaging system of the present invention desirably detects the boundary (edge) of the subject and detects the luminance difference between the subject and the background to recognize the subject depth in two dimensions. And the enlargement process is automatically performed so that the subject is uniformly displayed on the entire screen.

  In order to achieve the above object, the imaging system of the present invention is preferably an imaging system that stores an image captured by a recording device, and has a high definition in advance so as not to deteriorate the image quality even when the screen is partially enlarged. The image frame is stored in memory, and a necessary part is enlarged and recorded by image processing.

  In order to achieve the above object, the image enlarging method of the imaging system of the present invention is preferably a railway home image capturing system that monitors images of a train car unit with a plurality of monitors, and the monitor image is partially enlarged only in the vehicle portion. An image obtained by capturing a train from the front is automatically generated and displayed on a plurality of monitors in the order of vehicles.

  In order to achieve the above object, the image processing technology of the imaging system of the present invention desirably automatically enlarges a still life such as a building with a depth in a digital camera photograph and automatically generates an image captured from the front. Features.

  In order to achieve the above object, an imaging system of the present invention includes an imaging device that captures an image within a field of view, an image processing device that processes an image captured by the imaging device and outputs the image in a predetermined display format, and an output from the image processing device. In an imaging system that captures an object with a depth from an oblique direction, an image of a deep part and an image of a front part of the image of the object imaged by the imaging device are equivalent in size. It is displayed on the monitor.

  In order to achieve the above object, the imaging system of the present invention desirably enlarges the image of the back part of the image of the object imaged by the imaging device, or reduces the image of the front part. Thus, the image of the back part and the image of the front part are made the same size and displayed on the monitor.

  In order to achieve the above object, the imaging system of the present invention further includes an image frame memory in the image processing apparatus, stores a higher-definition image than the image displayed on the monitor in the image frame memory, and has a predetermined specified value. The image of the portion is enlarged and output.

  In order to achieve the above object, the imaging system of the present invention preferably further includes a recording device, and stores at least one of an image displayed on the monitor and an image stored in the image frame memory. is there.

  In order to achieve the above object, the imaging system of the present invention desirably includes a plurality of imaging devices, and displays each of the images captured by the plurality of imaging devices or a synthesized image on a monitor.

  In order to achieve the above object, an imaging system of the present invention desirably includes an imaging device that captures an image within a field of view, an image processing device that processes an image captured by the imaging device and outputs the image in a predetermined display format, and image processing An image pickup system for picking up an image of a train vehicle in a station premises, wherein only a vehicle portion of a train image picked up by the image pickup device is enlarged, and a train entrance / exit An image capturing the side lamp from the front is displayed on the monitor.

  In order to achieve the above object, an imaging system of the present invention desirably includes an imaging device that captures an image within a field of view, an image processing device that processes an image captured by the imaging device and outputs the image in a predetermined display format, and image processing An imaging system for imaging an object having a depth from an oblique direction, and enlarging an image of a deep part of the image of the object imaged by the imaging device, or in front The image of this part is reduced or at least one of them is converted into an image captured from the front and output.

  According to the present invention, when the installation environment of the monitoring camera is narrow and the installation position is limited, or when a large subject is monitored by a plurality of cameras, the spatial depth of the subject is automatically detected, The image at the back of the screen can be enlarged and displayed step by step, and a video as if the subject was imaged from the front with one camera can be provided.

  For example, in a system where a camera is used for train operation such as a one-man operation home monitoring system for railways, and the improvement of visibility is strongly required, the present invention makes it possible to feel the spatial spread caused by the environment. Since the object and the monitoring area can be monitored uniformly without any problems, one-man monitoring work by the driver can be further supported.

  In addition, video captured by a high-resolution imaging device such as a megapixel camera is stored in the image frame memory as a high-definition memory image, and enlargement processing is performed using the stored high-definition memory image. It can be displayed on a monitor or recorded on a recording device without deterioration.

Hereinafter, embodiments of the present invention will be described.
The present invention relates to a monitoring system that monitors important monitoring points existing in a deep monitoring area, such as a train, and extracts and enlarges a noticed portion of an image obtained by imaging the monitoring area from the image area. To do. For enlargement, change the pixel enlargement ratio as you go from the front to the back.For example, the image near the entrance / exit of the train and the vicinity of the car side light are the same as if the entrance / exit and the car side light were imaged from the front. By performing the conversion process, an image in which the train is viewed from the side (for example, an image in which the entrance / exit is captured from the front) is automatically generated, and an enlarged portion is displayed. There are usually a plurality of such important monitoring points, such as a vehicle entrance / exit and a vehicle side light at a station platform, which have a similar shape and are often arranged at a predetermined interval.

  In addition, the present invention recognizes the shape of the subject image by detecting the boundary (edge) of the subject and detecting the difference in luminance value between the subject image and the background image in order to recognize the depth of the subject image in two dimensions. Thus, the enlargement process is automatically performed so as to uniformly display the subject image (for example, the entrance / exit or the vehicle side light).

  The present invention also relates to a recording method for recording an image with high image quality in advance by recording only the partially enlarged image by recording the converted image on a recording device. As a result, the image quality does not deteriorate even if the recorded image is enlarged.

  In addition, the present invention is a monitoring system that monitors an area having a depth, such as a station home image monitoring system that monitors images on a plurality of monitors, and images displayed on a plurality of monitors, for example, a train Are displayed on separate monitor screens for each vehicle. And only the entrance / exit part of a captured image is expanded partially, the image which caught the entrance / exit of the train from the front is automatically generated, and it displays on multiple monitors. The straight front is, for example, a direction perpendicular or substantially perpendicular to the traveling direction of the train vehicle. At this time, the image of one vehicle may be displayed for one monitor, or the installation position of the monitor and the arrangement order of the vehicles may be matched.

Further, not only the entrance / exit but also the vehicle side light may be displayed simultaneously or in the vicinity (for example, on the display frame of the entrance / exit).
Embodiments of the present invention will be described.

  FIG. 2 is a block diagram showing a monitoring system according to an embodiment of the present invention. FIG. 2 is a system diagram using an image processing apparatus and a recording apparatus for performing partial enlargement processing of an image of a subject. 21 is a camera, 22 is an image processing device, 22-1 is an image frame memory in the image processing device 22, 23 is a recording device, and 4 is a monitor. Reference numerals 25, 26, and 27 are video signals. The recording device is, for example, a digital recorder. The camera 21 is, for example, a megapixel camera having an effective pixel count of 1.2 million pixels or more.

  In FIG. 2, the camera 21 captures a vehicle in a monitoring area, for example, a train stopped at the platform, and outputs a video signal 25 to the image processing device 22. The image processing device 22 stores the input video signal 25 in the image frame memory 22-1 in the image processing device 22 in an SXGA size (1280 × 1024 pixels) for each frame.

  The image processing device 22 partially enlarges the image stored in the image frame memory 22-1 based on the depth and shape of the subject image, and outputs the partially enlarged image as the video signal 26 to the recording device 23. To do. The recording device 23 records the image of the input video signal 26 in a previously selected image quality mode.

  The image recorded with the preselected image quality is read out from the recording device 23 as a video signal 27 and output to the monitor 24 as a reproduced image. The monitor 24 displays the playback image of the input video signal 27 on the screen.

  The above embodiment is characterized in that the image quality does not deteriorate even when the image is enlarged. However, in order to prevent the image magnified by the image processing device 22 from degrading the image quality compared to a normal recorded image recorded without being magnified, pay attention to the pixel enlargement rate and the recording image quality of the recording device 23. There must be.

For example, if the recording device 23 records with VGA (640 × 480 pixels), the enlargement ratio of the pixels can be enlarged up to twice as much as the vertical and horizontal without reducing the image quality.
Also, for example, when recording in QVGA (320 × 240), if the pixel enlargement ratio is up to 4 times both vertically and horizontally, it is possible to enlarge without degrading the image quality.

  FIG. 3 is a diagram illustrating an example of functional blocks of the image processing apparatus 22 according to an embodiment of the present invention. 31 is an image frame memory, 32 is an edge detector, 33 is a luminance difference detector, 34 is a subject shape detector, and 35 is an enlargement processor. FIG. 4 is a diagram schematically showing the state of an image in each component (31 to 35) in the image processing apparatus 22 of FIG. 41 is an image stored in the image frame memory 31, 42 is an edge detection image detected by the edge detection unit 32, 43 is a luminance difference detection image detected by the luminance difference detection unit 33, and 44 is a subject shape detection unit 34. , 45 is an enlarged image output from the enlargement processing unit 35.

  In FIG. 3, the video signal 25 input to the image processing device 22 is stored in the image frame memory 31 as high-quality (for example, SXGA size) image data (image 41). The image frame memory 31 outputs the stored image 41 to the edge detection unit 32 and the luminance difference detection unit 33.

  The edge detection unit 32 performs edge extraction of the image of the input image data, and outputs the extracted edge detection image 42 to the subject shape detection unit 34. For example, in the case of an image of a home train, a train outer frame in a state where the train enters the home is detected as an edge.

  In addition, the luminance difference detection unit 33 calculates a luminance value difference between the input image 41 and the background image, and generates an image (luminance difference detection image 43) using the calculated luminance value difference as a luminance value. The generated luminance difference detection image 43 is output to the subject shape detection unit 34. For example, in the case of an image of a home train, the train and the background are separated using the fact that the train surface is brighter than the background, and only the image area of the train is extracted. Note that the background image is obtained by, for example, capturing the monitoring visual field region in advance when the train is not in the line, and storing it in a predetermined memory in the image processing device 22, for example. Further, the calculation of the difference in luminance value is executed for each pixel, for example.

  The object shape detection unit 34 determines a highly correlated partial area as a train image from the input edge detection image 42 and the luminance difference detection image 43, and enlarges the image of the determined area (shape detection image 44). Output to processing unit 35.

  The enlargement processing unit 35 determines the enlargement ratio of the pixel size for each pixel in the pixel region of the shape detection image 44 determined by the subject shape detection unit 34. Then, the determined enlargement ratio is multiplied by the size of each pixel to generate an enlarged image 45 in which the subject is viewed from the front in a pseudo manner, and is output as a video signal 26 to the monitor 24. Note that the enlargement ratio is calculated under conditions where there is no change in the background and no moving object, such as an incoming train on the platform or a building premises (for example, based on the background image).

  In addition, in order to monitor passengers getting on and off near the entrance, it is necessary to monitor not only the entrance and exit but also the surrounding area. You may make it enlarge an image until.

As described above, in order to monitor a moving image in real time, the processes in FIG. 3 are all configured by hardware.
However, the image processing apparatus can be configured with an FPGA and processed as shown in the flowchart of FIG. FIG. 5 is a flowchart for explaining a processing operation example of the image processing method according to the embodiment of the present invention.

In FIG. 5, in step 501, a reference background image is determined and stored in advance.
In step 502, the enlargement ratio for each pixel is calculated based on the background image.
In step 51, the video signal 25 is stored in the image frame memory 31.

In step 52, the edge of the stored video signal 25 is extracted, and the edge detection image 42 is extracted.
In step 53, a difference in luminance value between the stored video signal 25 and the background image stored in advance is calculated for each pixel, for example, and a luminance difference detection image 43 is detected.

In step 54, a highly correlated partial area is determined as the shape detection image 44 from the edge detection image 42 and the luminance difference detection image 43.
In step 55-1, for the pixel area of the shape detection image 44 determined by the subject shape detection unit 34, the enlargement ratio of the pixel size of each pixel is determined.

In step 55-2, the determined enlargement ratio for each pixel is multiplied by the size of each pixel to generate an enlarged image 45 in which the subject is viewed from the front in a pseudo manner.
Next, an example of the procedure for calculating the enlargement ratio according to the present invention will be described with reference to FIG. FIG. 6 is a diagram for explaining the procedure for calculating the enlargement ratio according to the embodiment of the present invention. It is displayed in XY coordinates with the horizontal axis as the X axis and the vertical axis as the Y axis. The coordinate at the bottom left is the origin (0, 0). (a) is the image 10-1 of display example 10 in FIG. 1, (b) is the size of the pixel before enlargement, and (c) is the size of the pixel after enlargement. However, as compared with the image of FIG. 6A, FIG. 6B and FIG. 6C show the size of the illustrated pixel larger.

6, represents an image 10-1 X, in Y coordinate, image 10-1 overall (L _H × L _V) = a (1280 × 1024).
In order to generalize the calculation method, variables are defined as follows.

From shape detection image 44 obtained by subject shape detection, l _H , l _V1 , and l _V2 are determined as shown in FIG. Here, l _H is the X coordinate of the left end of the shape detection image 44, l _V1 is the Y coordinate of the lower left end of the shape detection image 44, and l _V2 is the Y coordinate of the upper left end of the shape detection image 44. The straight line at the bottom of the train is function F ₁ (X), and the straight line at the top of the train is function F ₂ (X).

At this time, the function F ₁ (X) can be obtained as shown in Expression (1) and the function F ₂ (X) as shown in Expression (2).

Also, the size of the original pixel is (g _X × g _Y ), the size of the enlarged pixel is (G _X × G _Y ), the magnification rate of the pixel in the Y-axis direction is α (X), and the magnification in the X-axis direction is Let β (X) be the rate.
At this time, G _Y can be obtained as shown in Equation (3).

Next, G _X can be obtained as shown in Equation (4), where S is the sum of the horizontal pixels of the enlarged image frame, where α (X) is the enlargement ratio of the pixels in the X-axis direction.

As described above, an enlarged image can be obtained by multiplying the original pixel by the enlargement ratios α (X) and β (X), which are variables of X, and enlarging each pixel.
The above calculation processing is performed in a state where the subject is photographed when the camera is installed, and the magnification rate α (X) and β (X) are used as constants without calculating the magnification rate during subsequent normal monitoring.

  Another embodiment of the present invention will be described with reference to FIG. FIG. 7 is a diagram for explaining an embodiment of the present invention of a home image monitoring system in a railway. Fig. 7 (a) shows the schematic configuration of the system as seen from above. 1-1 to 1-4 are cameras, and 2-1 to 2-8 are train vehicles. Illustrations of other objects such as passengers and other platforms that should be on the train are omitted in order to avoid complexity. Here, although the monitor and the recording device are not shown in FIG. 7, for example, they are installed in a driver's seat, a conductor's seat, a station office, or a monitoring center, and either cameras 1-1 to 1-4 and either wireless or wired or These are combined by well-known transmission means (not shown, for example, a wireless local area network (LAN), optical communication, or the like.

  FIG. 7B is a display example of the prior art in which the images acquired by the cameras 1-1 to 1-4 in FIG. 7A are displayed as they are on a plurality of monitors. 10 'is a display example of the monitor screen, 10'-1 is a display example in which the video acquired by the camera 1-1 is displayed on one of the monitors, and 10'-2 is a video image acquired by the camera 1-2 on the monitor 1 10'-3 is a display example in which the video acquired by the camera 1-3 is displayed on one of the monitors, and 10'-4 is a video acquired by the camera 1-4 in one of the monitors. It is the example of a displayed display.

  FIG. 7 (c) is a diagram showing an example in which images acquired by the cameras 1-1 to 1-4 in FIG. 7 (a) are displayed on a plurality of monitors according to an embodiment of the present invention. 70 is a display example of the monitor screen, 70-1 is a display example of displaying the image acquired by the camera 1-1 on one of the monitors, 70-2 is a display of the image acquired by the camera 1-2 on one of the monitors 70-3 is a display example in which the video acquired by camera 1-3 is displayed on one of the monitors, and 70-4 is a display example in which the video acquired by camera 1-4 is displayed on one of the monitors. is there.

  In the embodiment of FIG. 7, one monitoring area is captured by a plurality of cameras and displayed on a plurality of monitors. For this reason, for example, as in the conventional example shown in FIG. 7B, the front and back images are alternately displayed, so that it is very difficult to visually recognize.

In such monitoring, in the present invention, a monitoring area captured by a plurality of cameras is displayed in a pseudo manner as if captured from the front by one camera. This improves the visibility.
FIG. 8 illustrates another embodiment of the present invention. FIG. 8 is a diagram showing an example of a monitor display screen according to an embodiment of the present invention. FIG. 8 (c) shows an embodiment of the present invention, in which FIG. 7 (c) has a plurality of monitors, one monitor is assigned to each camera, and one camera is assigned an image acquired by one camera. In contrast to the display on the monitor, one monitor is divided into a plurality of screens (in FIG. 7, four-divided display), and the number of monitors is reduced. 80 is a display example of the monitor screen, 70-1 is a display example of displaying the video acquired by the camera 1-1 on one of the monitors, 70-2 is a display of the video acquired by the camera 1-2 on one of the monitors 70-3 is a display example in which the video acquired by the camera 1-3 is displayed on one of the monitors, and 70-4 is a display example in which the video acquired by the camera 1-4 is displayed on one of the monitors. is there.

  With reference to FIG. 9, another embodiment of the present invention will be described. FIG. 9 is a diagram showing an example of a monitor display screen according to an embodiment of the present invention. FIG. 9 is a display example 70-1 of FIG. 7 (c) according to an embodiment of the present invention, in which the captured image of the outer wall portion of the vehicle is not displayed. It is the example of a display which displayed the upper passenger's picked-up image.

  In the embodiment of FIG. 9 described above, for example, a lamp (for example, a car side lamp) that notifies opening / closing of a passenger door provided on each side of the vehicle is recognized, and the lamp in the captured image is turned on by image processing. It can be executed by detecting this and calculating the position of the passenger door based on the lamp position.

For example, the shape detection image 44 described with reference to FIG. 4 may be selected.
Furthermore, the shape detection image 44 may be obtained by the processing in step 54 described with reference to FIG.

It is obvious that which part of the captured image is to be displayed or not to be set according to the application and purpose.
The image stored in the recording apparatus may be the same as the display image, the original image, or both.

The figure which shows the example of a general | schematic structure of the system which monitors the monitoring area | region with the conventional depth, and the display example of a monitor screen. The block diagram which shows the monitoring system of one Example of this invention. 1 is a diagram illustrating an example of functional blocks of an image processing apparatus according to an embodiment of the present invention. The figure which shows typically the mode of the image in the image processing apparatus of FIG. 6 is a flowchart illustrating an example of a processing operation of an image processing method according to an embodiment of the present invention. The figure for demonstrating the procedure of calculation of the expansion ratio of one Example of this invention. The figure for demonstrating one Example of this invention of the home image monitoring system in a railway. The figure which shows the example of a display of one Example of this invention. The figure which shows the example of a display of one Example of this invention.

Explanation of symbols

1-1 to 1-4: Camera, 2-1 to 2-8: Vehicle, 10, 10 ', 20: Display example, 10-1, 10'-1 to 10'-4, 20-1, 20- 2: Image, 21: Camera, 22: Image processing device, 22-1: Image frame memory, 23: Recording device, 24: Monitor, 25-27: Video signal, 31: Image frame memory, 32: Edge detection unit, 33: Luminance difference detection unit, 34: Subject shape detection unit, 35: Enlargement processing unit, 41: Image stored in the image frame memory 31, 42: Edge detection image, 43: Luminance difference detection image, 44: Shape detection image 45: Enlarged image, 70-1 to 70-4: Image, 70, 80: Display example.

Claims (7)

An imaging device that captures an image within the field of view; an image processing device that processes an image captured by the imaging device and outputs the image in a predetermined display format; and a monitor that displays an image output by the image processing device. In an imaging system for imaging an object from an oblique direction,
The image processing apparatus is characterized in that an image of a deep part of an image of an object imaged by the image pickup apparatus and an image of a front part of the image are displayed on the monitor with the same size. The imaging system according to claim 1.
The image processing device enlarges the image of the back portion of the image of the object imaged by the imaging device, or reduces the image of the front portion, or at least one of them, and thereby An image pickup system characterized in that an image of the portion is made the same size and displayed on the monitor. The imaging system according to claim 1 or 2, wherein the image processing apparatus includes an image frame memory,
An image pickup apparatus, wherein an image of a higher definition than an image displayed on the monitor is stored in the image frame memory, and an image of a predetermined portion specified in advance is enlarged and output. The imaging system according to any one of claims 1 to 3, further comprising a recording device,
An image pickup system, wherein at least one of an image displayed on the monitor or an image stored in the image frame memory is stored in the recording device. The imaging system according to any one of claims 1 to 4,
An imaging system comprising a plurality of the imaging devices and displaying each of the images captured by the plurality of imaging devices or a synthesized image on the monitor. An image pickup device for picking up an image in the field of view, an image processing device for processing an image picked up by the image pickup device and outputting the image in a predetermined display format, and a monitor for displaying an image output from the image processing device In an imaging system for imaging train cars of
The said image processing apparatus expands only the vehicle part of the train image imaged by the said imaging device, and displays the image which caught the entrance / exit of the train from the front on the said monitor, The imaging system characterized by the above-mentioned. An imaging device that captures an image within the field of view; an image processing device that processes an image captured by the imaging device and outputs the image in a predetermined display format; and a monitor that displays an image output by the image processing device. In an imaging system for imaging an object from an oblique direction,
The image processing apparatus captures the object from the front by enlarging an image of a back part of an image of the object imaged by the imaging apparatus or reducing an image of a front part. An imaging system characterized by converting to an image and outputting the image.