JP2006304171A - Image processing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processing system capable of transmitting or receiving additional information together with a photographed video image without largely modifying a video transmission apparatus of the interlace system. <P>SOLUTION: The image processing system for processing a video image of the interlace system acquired through a camera includes a field divider 42 for dividing the video image into unit photographed images in the unit of a field, an additional information imager 41 for imaging the additional information to generate an information image, a video generator 43 for assigning the information image in place of the prescribed unit photographed image, and a video signal converter 50 for converting an additional information-attached video image into a video signal with a prescribed format and providing an output of the resulting video signal. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image processing system for processing additional information other than a captured video in video transmission.

  In addition to television broadcast images, there is known a character broadcast in which character information for character broadcast is incorporated into an analog television broadcast wave and transmitted. In this character broadcast, the vertical blanking period of a video signal transmitted as an analog television broadcast wave is known. The character signal data to be displayed on the TV screen is superimposed on a predetermined horizontal line and transmitted from the broadcasting station side. On the television receiver side, the data superimposed on the corresponding horizontal line is detected by the character broadcast decoder, and this character is detected. The signal is displayed on the television screen (see, for example, Patent Document 1). According to this technology, digital data is superimposed on a predetermined one horizontal line (or a plurality of horizontal lines) within the vertical blanking period of the analog video signal and transmitted, thereby making various types of information different from the video information of the analog video signal. Data (additional information) can be transmitted from the transmission side to the reception side. However, this technique requires a demodulator that not only extracts video information from an analog video signal but also extracts additional information by synchronously detecting a predetermined horizontal line within a vertical blanking period. Since the horizontal line in the vertical blanking period is a very limited time domain, the transmission capacity of the additional information to be incorporated is limited, and the demodulator becomes complicated when the transmission capacity as much as possible is used. The problem of becoming expensive arises.

Interface means for performing signal processing on the output signal obtained by converting the analog output signal of the image sensor into a digital signal, and outputting the signal-processed digital video data and the video adjustment data obtained during the signal processing to the outside The video packet of video adjustment data includes shooting information such as the shutter speed and white balance that are automatically adjusted according to the illuminance of the subject, and whether the data received via the serial interface circuit is video digital data An apparatus is known that discriminates whether it is video adjustment data, converts the received video digital data into data suitable for video display, and converts the received video adjustment data into a character string (see, for example, Patent Document 2). . The technology for transmitting video data and video adjustment data using such a packet transmission technology needs to have an interface with a format that matches between the transmission side and the reception side. There are many fields that are not fully integrated and cannot be used.
JP-A-5-14869 (paragraph numbers 0002-00704, FIG. 11) JP 2003-171435 A (paragraph numbers 0000-0000, FIGS. 5 and 6)

  In view of the above situation, an object of the present invention is to provide an image processing system that allows additional information to be transmitted, received, or transmitted / received together with a captured image without greatly changing video transmission equipment that has been frequently used in the past. Is to provide.

  In an image processing system for processing interlaced images acquired through a camera, particularly in a transmission-side image processing system, a feature configuration according to the present invention for solving the above-described problem is that field segmentation is performed to segment the video into unit-captured images in field units. An additional information imaging unit that images additional information related to the video to generate an information image, and a video generation unit that generates a video with additional information to which the information image is assigned instead of the predetermined unit photographed image. And a video signal converter for converting the video with additional information into a video signal of a predetermined format and outputting the video signal.

  In this feature configuration, the video frame group consisting of the odd field and the even field sent from the camera is once divided into field units, and information as additional information obtained and imaged (imaged) by another means. By assigning and fitting an image to a predetermined field instead of the unit shot image using the field, a video with additional information in which the additional information is inserted into the predetermined field is generated. The video with additional information is sent after being converted into a video signal of a predetermined format (for example, an NTSC video signal or a PAL video signal). In the present invention, instead of using a vertical blanking period or the like as in the prior art, an information image obtained by imaging additional information is replaced with a unit-captured image of a specific field and sent. Therefore, it is possible not only to secure a sufficient bandwidth, but also to stably transmit additional information. The present invention is effective without substantial disadvantages in the video transmission field in which the image quality deterioration due to the omission of a predetermined field is allowed.

  A typical example of additional information to be put on a video signal as an information image together with a captured image is a capturing parameter of a camera that acquires a captured image to be transmitted. In the present invention, this shooting parameter is used in a broad sense. Camera shooting settings such as shutter speed, aperture, white balance, and strobe, camera device characteristics such as lens aberration and center deviation between the lens and the CCD, and the camera's self It includes all information related to camera shooting such as diagnostic information and camera position / posture information. By placing a desired shooting parameter among them as an information image on the video signal together with the shot image, the video signal receiving side uses the received shooting parameter as various control parameters including image processing of the shot image. be able to.

  Furthermore, as one of the preferred embodiments, if code image conversion such as a barcode or QR code is employed in imaging additional information, the additional information can be converted into an information image with a more compact capacity and higher reliability. Can be transmitted as In particular, when such code image conversion is used, powerful error correction processing is possible, noise generated during transmission can be canceled, and the use of a two-dimensional code such as a QR code is a very large amount of information. Enables transmission of

  In the process of assigning the information image, which is additional information, to the predetermined field, a mode is adopted in which the unit shot image is assigned to one of the odd field or the even field and the information image is assigned to the other of the odd field or the even field. Since the assignment field of the information image and the photographed image is clearly determined in advance, it becomes easy to insert and extract the information image, and when reproducing the photographed image, either the odd field or the even field is selected. Even if there is a decrease in image quality simply by displaying the image, it is not necessary to prepare a complicated and expensive device for the display. Of course, when a certain degree of device complexity can be tolerated, it is possible to avoid apparent image quality degradation by generating even or odd fields missing from either odd or even fields by interpolation processing or the like. Is possible.

  When the assignment of the information image, which is additional information, to the predetermined field is not set in advance or when the assignment to the predetermined field changes over time, the assignment of which field the information image is assigned to by some method Information needs to be communicated to the receiver. As one method for transmitting such allocation information, it is proposed to insert information indicating the allocation of the information image to a predetermined field within a vertical blanking period. For example, it is possible to recognize a field to which an information image is assigned depending on whether or not a pulse is set in a predetermined area within a vertical blanking period immediately before the field to which an information image is assigned. Since this information is obtained with 1 bit, the insertion and reading process is simple.

  A feature configuration according to the present invention for solving the above-described problem in an image processing system on the receiving side that processes interlaced video acquired through a camera is a unit-by-field shooting that configures video acquired through a camera. A video capture for inputting a video signal of a video with additional information consisting of an image and an information image as additional information embedded in a predetermined field, and a field having the unit photographed image from the video with additional information acquired by the video capture And a field segmenting unit that classifies the field having the information image, a captured video generation unit that constructs a captured video from the segmented unit captured image, and additional information generation that generates additional information from the segmented information image Part.

  In this configuration, additional information is generated from an information image taken from a field on which an information image is placed out of an odd field and an even field that constitute a frame obtained by video capture, and the unit shooting video is taken from the field. A captured video is constructed from the taken unit captured images. Since the transmitted additional information is not inserted into a vertical blanking period or the like as in the prior art, but is inserted as an information image in a predetermined field, the additional information included in the video signal is generally Can be easily extracted using a simple image processing module. The shot video may be constructed using only the field on which the unit shot video is placed, or if necessary, the shot image with little image quality degradation is generated by interpolation processing etc. May be constructed.

  When the information image extracted from the field is converted into a code image such as a barcode or QR code, the information image is converted into additional information by a corresponding code image decoder. The advantage of converting the additional information into a code image such as a barcode is as described above.

  Since the received additional information is used for at least one specific purpose, it is preferable to process the additional information in accordance with the purpose. For this purpose, in one preferred embodiment, an additional information pre-processing unit that processes additional information generated by the additional information generation unit for subsequent processing is provided.

  In particular, when the additional information is a camera shooting parameter as described above, the additional information is often used during image processing of a captured video acquired at the same time. As described above, when the additional information includes a shooting parameter used at the time of image processing of the shot video, the additional information preprocessing unit has a function of converting the shooting parameter to an auxiliary control parameter at the time of image processing of the shot video. Good. In addition, it is desirable to notify the operator on the video signal receiving side by voice or screen display among the shooting parameters of the camera. Therefore, it is also convenient that the additional information preprocessing unit has a function of converting the imaging parameter included in the additional information into a notification driving signal by the notification unit.

  By combining the above-described image processing system on the transmission side and the image processing system on the reception side, a comprehensive image processing system for video transmission with additional information in which an information image is inserted into a predetermined field in the present invention is constructed. The Therefore, a comprehensive image processing system having a transmission / reception function for video transmission with additional information is also an object of the present invention, and the system includes all the above-described effects including the effects of the embodiment. It is possible to obtain

Furthermore, the present invention does not assign an information image by using a field that is a unit shot image in the interlace method as an assignment unit, but other general unit shot images, for example, a unit shot image in the non-interlace method, as an assignment unit. It is also possible to employ a configuration for assigning information images. That is, in the image processing system on the transmission side that processes the video acquired through the camera, in particular, the characteristic configuration according to the present invention for solving the above-described problem generates an information image by converting the additional information related to the video into a code image. An additional information imaging unit; a video generating unit that generates a video with additional information in which the information image is assigned to at least a partial area of a unit photographed image that constitutes the video; and the video with additional information is a video in a predetermined format. A video signal conversion unit that converts the signal into a signal and outputs the signal.
In this feature configuration, an information image as additional information obtained by another means and converted into a code image (code image) is allocated and fitted to at least a part of the unit photographed image sent from the camera. As a result, a video with additional information in which additional information is inserted into a predetermined unit photographed image is generated. This video with additional information is converted into a video signal of a predetermined format and sent out. In the image processing system on the receiving side that receives this video signal, a code image is generated from the corresponding part of the unit photographed image constituting the video with additional information. Additional information can be obtained by taking out and decoding the obtained information image. This form is particularly effective in a field where not all necessary information is included in the captured image, such as a video transmission system in an in-vehicle camera, and there are many unnecessary areas in the captured image. Can be applied to.

First, the basic configuration and principle of the image processing system according to the present invention will be described with reference to the schematic diagram shown in FIG.
The transmission-side image processing system 1 includes a CCD camera 10 as a photographing camera, an analog front end unit 20, an additional information acquisition unit 30, a transmission-side video processing unit 40, and an addition sent from the transmission-side video processing unit 40. And a video signal converting unit 50 for converting a video with information into a video signal of a predetermined format and outputting the video signal. The CCD camera 10 is a normal interlace camera equipped with a photographing lens 11, a CCD 13, and a shutter 12 for controlling the passage of light from the photographing lens 11 to the CCD 13, and is installed in various places according to the photographing purpose. Is done. The analog front end unit 20 has a function of removing an analog video imaged by the CCD camera 10 and amplifying the signal into a digital signal, and outputs the video image acquired by the camera imaging in an interlaced manner.

  The additional information acquisition unit 30 has a function of acquiring additional information to be transmitted together with the video acquired by the CCD camera 10, and its form changes depending on the additional information to be acquired. The type of is not limited. The video processing means 40 divides the interlaced video into unit-captured images in field units, and an additional information imaging unit 41 that generates an information image by imaging additional information acquired by the additional information acquisition unit 30. A field segmentation unit 42 and a video generation unit 43 that generates a video with additional information to which the information image is assigned instead of the predetermined unit photographed image are provided. As a result, the additional information acquired by the additional information acquisition unit 30 is converted into an image and placed in a predetermined field as an information image, and together with the captured image, the video signal of a predetermined format converted by the video signal conversion unit 50 (NTSC format or (PAL method).

  In addition, when the assignment of the information image, which is additional information, to the predetermined field is not set in advance or when the assignment to the predetermined field changes with time, which field the information image is assigned to by some method It is necessary to convey the allocation information to the receiving side. In such a case, the video generator 43 has a function of inserting a 1-bit pulse as information indicating the assignment of the information image to the predetermined field within the vertical blanking period immediately before the field to which the information image is assigned. Implemented.

  The reception-side image processing system 2 receives the video signal of the video with additional information, which is sent from the transmission-side image processing system 1 and includes a unit-captured image in units of fields and an information image as additional information inserted into a predetermined field. A video capture 60 to be input and a receiving-side video processing means 70 for processing the video with additional information acquired by the video capture 60 and generating additional information and a captured video are provided.

  The receiving-side video processing means 70 includes a field segmenting unit 71 that classifies a video with additional information sent from the video capture 60 into a field having a unit shot image and a field having an information image, and an addition from the segmented information image. An additional information generation unit 72 that generates information and a captured video generation unit 73 that reconstructs a captured video from the divided unit captured images are provided. Further, the additional information preprocessing unit 80 that processes the additional information output from the additional information generation unit 72 for the next processing, and the captured video output from the captured video generation unit 73 are image-processed to obtain desired image information. A video signal control unit 100 is also provided that converts the captured video output from the image processing unit 90 to be extracted and the captured video generation unit 73 into a display video signal for display on the display 3.

  In the case where a 1-bit pulse as allocation information for specifying a field to which an information image is allocated in the video generation unit 43 of the transmission-side image processing system 1 is inserted in the vertical blanking period, such allocation information The video capture 60 has a function of checking whether or not a 1-bit pulse is inserted in the vertical blanking period and providing the field segmentation unit 71 with a segmentation command indicating the check result. In this case, the field segmentation unit 71 takes out a field having an information image from the video with additional information transmitted from the video capture 60 based on the segmentation command from the video capture 60.

  In addition, the photographed video generation unit 73 creates a photographed video in which the field on which the information image is carried is missing, or in an extreme case, a photographed video composed of only odd or even fields, and the image quality is higher than that of the original image. Such an image processing system is preferably applied where high image quality is not required. When image quality comparable to that of the original image is required, the captured video generation unit 73 may create the field portion of the captured image that is missing due to the transmission of the information image by interpolating the preceding and subsequent field images.

  As an application example of the basic image processing system according to the present invention described above, a captured image from an in-vehicle camera that captures a vehicle periphery (a road marking such as a center line) and an imaging parameter of the in-vehicle camera are transmitted to a controller inside the vehicle. A first embodiment is shown in FIG. In the first embodiment, in the transmission-side image processing system 1, the additional information acquisition unit 30 is configured as a shooting parameter acquisition unit 30 that captures the shutter speed of the CCD camera 10 as an in-vehicle camera, and an additional information imaging unit 41 is added. A barcode image generation unit 41 that converts a shutter speed as information into a barcode image is configured, and a video signal conversion unit 50 is configured as an NTSC encoder 50. Further, the field segmentation unit 42 and the video generation unit 43 receive information images (bars) in the even field for the video as a frame group composed of the interlaced odd field and even field input from the analog front end unit 20. Code image) is being replaced.

  In the receiving-side image processing system 2 in the first embodiment, the photographing information generation unit 72 is configured as a barcode decoder 72, and the additional information preprocessing unit 80 is obtained from the shutter speed obtained from the barcode decoder 72 and the image processing unit 90. It is configured as a subject lightness calculation unit 80 that obtains the brightness of the subject based on the image data of the obtained captured image. Corresponding to the allocation of the information image in the video signal with additional information (video signal) sent from the transmission-side image processing system 1, the field segmentation unit 71 and the captured video generation unit 73 start from the odd fields that are sequentially extracted. It is configured to generate a captured video. The subject brightness calculation unit 80 uses a luminance value of the captured image data obtained from the image processing unit 90 (an average luminance value in a range selected from the imaging region) and a shutter speed obtained from the barcode decoder 72 to perform road marking and the like. The brightness, that is, the brightness outside the vehicle is estimated and calculated. With regard to this estimation calculation, if a LUT is prepared in which a function for determining the actual brightness of the road marking is prepared using the brightness value of the image data corresponding to the road marking (for example, road surface) and the shutter speed as parameters, a high-speed calculation process Is realized. As a result, the traveling control unit 4 controls the headlight and the room lighting based on the obtained brightness outside the vehicle. For example, by setting the photographing point of the CCD camera 10 in front of the vehicle traveling direction, it is possible to control lighting of the headlight before entering the tunnel.

  FIG. 3 shows a state in which an information image, which is a barcode representing a shutter speed as a photographing parameter, is fitted into a photographed image that is an odd field image and an even field image that are consecutive photographed images in the first embodiment. ing. As apparent from FIG. 3, the shutter speed of the shutter 12 acquired by the imaging parameter acquisition unit 30 is converted into a barcode image by the barcode image generation unit 30, and the imaging acquired by the CCD camera 10 and the analog front end unit 20. A bar code image is inserted as an information image between the odd field images constituting the video, that is, instead of the unit shot image which is an even field image, and is output as a video signal with additional information. In the video signal with additional information, the barcode image is extracted from the even field image and the unit photographed image is extracted from the odd field image in the reverse flow shown in FIG. A shutter speed is generated from the extracted bar code image and is used by the subject brightness calculation unit 80. From the extracted odd field image, the unit photographed image is output as a video signal using only the odd field as it is, and is displayed as a photographed image on the display 3 via the video signal control unit 100.

  A second embodiment as a modification of the first embodiment described above is shown in FIG. Compared to the first embodiment, the transmission-side image processing system 1 according to the second embodiment is a white parameter obtained by the imaging parameter acquisition unit 30 from the white balance control unit of the analog front end unit 20 as well as the shutter speed. The barcode image generation unit 41 is configured to acquire a balance control state, and is different in that it is configured to convert two types of shooting parameters into one barcode image. The barcode image generation unit 41 does not convert the two types of shooting parameters into one barcode image, but converts the barcode image for each shooting parameter and arranges them vertically, for example, as an information image. It is possible to adopt such a configuration, and thereby it is possible to convert a large number of types of imaging parameters into information images.

  Correspondingly, in the receiving-side image processing system 2 in the second embodiment, the barcode decoder 72 has two types of shutter speed and white balance from one or a plurality of barcode images as compared with the first embodiment. Of the photographic image data obtained from the image processing unit 90 by the subject brightness calculation unit as the additional information preprocessing unit 80, and the Y, B, and B pixel values (or YCC signal values) and The difference is that the subject color calculation unit 80 is configured to estimate and calculate the actual color of the subject (preceding vehicle, pedestrian, centerline, etc.) from the shutter speed and the white balance. Again, regarding this estimation calculation, the actual color of the subject is determined using the R, G, B pixel values of the image data corresponding to the captured image, the shutter speed, and the white balance state (cloudy mode, clear sky mode, etc.) as parameters. If a LUT in which functions to be performed are tabulated is prepared, high-speed arithmetic processing is realized.

  In the tracking process in which the actual color of the subject estimated and calculated in this way is used to track the target subject through sequentially received captured images, correct recognition of the target subject is important. By giving the actual subject color to 5, there is an advantage that the recognition accuracy is remarkably improved, and as a result, the tracking accuracy is improved.

  A third embodiment as a modification of the first embodiment described above is shown in FIG. The transmission-side image processing system 1 in the third embodiment is configured so that the shooting parameter acquisition unit 30 acquires the center shift amount between the lens 11 of the CCD camera 10 and the CCD 13 as a shooting parameter, as compared to the first embodiment. The barcode image generation unit 41 is different in that it is configured to convert the center shift amount between the lens 11 and the CCD 13 into a barcode image. Correspondingly, in the receiving-side image processing system 2 in the third embodiment, the barcode decoder 72 outputs the center shift amount between the lens 11 and the CCD 13, so that the additional information preprocessing unit 80 is connected to the barcode decoder 72. The correction data generation unit 80 is configured to generate correction data for correcting the center shift based on the output center shift amount and to supply the correction data to the image processing unit 90.

  The center misalignment between the lens 11 and the CCD 13 of the CCD camera 10 represents a state in which the center of the lens 11 and the center of the CCD 13 are displaced with respect to the incident optical axis, as shown in FIG. Such a center shift causes a phenomenon in which the center of image data as a captured image by the CCD 13 and the center of the lens 11 (camera center) do not coincide (see FIG. 6B). Based on this, an error in calculating the distance between the vehicle travel locus line or road marking (center line, etc.) and the vehicle is derived. Such a center shift also causes a large correction error when a correction program for correcting various lens aberrations is applied to the obtained image data. For this reason, it is important to measure the center shift amount (shift direction and shift distance) between the lens 11 and the CCD 13 in advance and send the center shift amount to the image processing apparatus to correct the center shift. Since this center shift amount is caused as an individual difference of the cameras, image processing is performed from the CCD camera 10 side when a plurality of CCD cameras 10 are mounted or when the CCD cameras 10 may be replaced. It is particularly important to construct a high-accuracy peripheral monitoring apparatus by feeding the center deviation amount inherent to the CCD camera 10 in use to the apparatus side and correcting the center deviation. Further, in a system that can send such a center shift amount to the image processing apparatus side, there is an advantage that a CCD camera 10 that is very inexpensive, that is, the positional accuracy of the lens 11 and the CCD 13 is not high can be used.

  A fourth embodiment as a modification of the first embodiment described above is shown in FIG. Compared with the first embodiment, the transmission-side image processing system 1 according to the third embodiment displays abnormal information indicating abnormality that has occurred in the CCD camera 10 as a so-called wide-range imaging parameter by the imaging parameter acquisition unit 30. Or it is comprised so that it may acquire from the analog front end part 20, and the barcode image generation part 41 differs by being comprised so that this abnormality information may be converted into a barcode image. Correspondingly, in the receiving-side image processing system 2 in the second embodiment, since the barcode decoder 72 outputs abnormality information, the additional information preprocessing unit 80 adds the abnormality information output from the barcode decoder 72 to the abnormality information. On the basis of this, an abnormality recognition unit 80 for recognizing an abnormality occurring in the CCD camera 10 or the analog front end unit 20 is configured. The abnormality recognizing unit 80 outputs a notification driving signal for notifying the driver of the abnormality through the notification unit 6 such as a buzzer or a display in accordance with the recognized abnormality. Furthermore, when the abnormality information recognized by the abnormality recognizing unit 80 is transferred to the ECU 7 mounted on the vehicle, the countermeasure program for the occurrence of abnormality operates there to be appropriately dealt with. That is, in this embodiment, diagnostic result data from the CCD camera 10 having a self-diagnosis function can be transmitted together with the captured image.

The basic configuration of the image processing system according to the present invention and the four exemplary embodiments have been described above. However, each exemplary embodiment may be applied singly or in any combination thereof. However, the application form of the image processing system according to the present invention is not limited to the above-described four embodiments. A feature that determines the present invention is that a predetermined field image in a photographed video is replaced by an information image obtained by imaging additional information and transmitted as a video signal with additional information, or a video is obtained from such a video signal with additional information. In addition, the additional information can be taken out and used for various purposes. The present invention can be applied to any video transmission field in which the effects provided by this feature can be effectively used.
Furthermore, it is possible to apply the present invention to a video transmission system using a non-interlace method instead of an interlace method. In that case, on the transmission side, although not shown, instead of the field segmentation unit 42, a unit captured image corresponding to one screen is selectively extracted from the non-interlaced video, and the selected unit captured image is displayed. A function unit that divides at least a part of the area (of course, the whole unit photographed image may be included) is provided, and additional information that is converted into a code image by a barcode method or the like is assigned by the video generation unit 43 to the divided area. Configured. On the receiving side, instead of the field segmentation unit 71, a function unit that cuts out an area to which additional information in the unit photographed image is allocated is provided. In the unit shot image, the area that is divided for allocation of additional information is an unnecessary area that is outside the target subject in the case of an in-vehicle camera etc. whose transmitted image is a road index around the outside of the vehicle or an oncoming vehicle. Therefore, it is convenient to use this unnecessary area.

1 is a basic configuration diagram showing the principle of an image processing system according to the present invention. Configuration diagram of an image processing system in the first embodiment Explanatory drawing which shows a mode that the information image as a photography parameter is inserted in the photography image which is an odd field image and an even field image Configuration diagram of image processing system in second embodiment Configuration diagram of image processing system in third embodiment FIGS. 2A and 2B are explanatory diagrams for explaining a center shift between the lens and the CCD, FIG. 1B is an explanatory diagram showing a center shift between the lens and the CCD surface, and FIG. Configuration diagram of image processing system in fourth embodiment

Explanation of symbols

1: Transmission-side image processing system 2: Reception-side image processing system 3: Display 4: Travel control unit 5: Subject recognition unit 6: Notification unit 7: ECU
10: CCD camera (camera)
30: Additional information acquisition unit (imaging parameter acquisition unit)
40: Transmission-side video processing means 41: Additional information imaging unit (barcode image generation unit)
42: Field division unit 43: Video generation unit 50: Video signal conversion unit (NTSC encoder)
60: Video capture 70: Receiving side video processing means 71: Field division unit 72: Additional information generation unit (barcode decoder)
73: Shooting image generation unit 80: Additional information preprocessing unit (subject brightness calculation unit; subject color calculation unit; correction data generation unit; abnormality recognition unit)
90: Image processing unit

Claims (8)

In an image processing system that processes interlaced video acquired through a camera,
A field dividing unit that divides the video into unit-captured images in field units, an additional information imaging unit that generates an information image by imaging additional information related to the video, and the information image instead of the predetermined unit-captured image An image processing system comprising: a video generation unit that generates a video with additional information assigned to the video signal; and a video signal conversion unit that converts the video with additional information into a video signal having a predetermined format and outputs the video signal.   The image processing system according to claim 1, wherein the additional information is a shooting parameter of the camera.   The image processing system according to claim 1, wherein the information image is a code image.   The image processing system according to claim 1, wherein the video generation unit assigns the unit captured image to one of an odd field and an even field and assigns the information image to the other of the odd field and the even field.   The image processing system according to claim 1, wherein information indicating assignment of the information image to a predetermined field is inserted within a vertical blanking period.   Video capture that inputs a video signal of video with additional information consisting of unit-captured images of field units constituting video acquired through a camera and information images as additional information inserted in a predetermined field, and acquired by the video capture A field segmenting unit that divides the fielded image with additional information into a field having the unit captured image and a field having the information image; a captured image generating unit that constructs a captured image from the segmented unit captured image; An image processing system comprising: an additional information generation unit that generates additional information from the segmented information image.   The image processing system according to claim 6, wherein the additional information generation unit is a decoder that generates additional information from a code image having a predetermined format. In an image processing system that processes video acquired through a camera,
An additional information imaging unit that generates an information image by converting the additional information related to the video into a code image, and generates a video with additional information in which the information image is assigned to at least a part of a region of the unit photographed image constituting the video. An image processing system comprising: a video generation unit; and a video signal conversion unit that converts the video with additional information into a video signal having a predetermined format and outputs the video signal.

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