JP2004140806A - Noticing image display method, device and remote image monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote image monitoring system in which only changed parts in all the areas of an image to be monitored can be displayed without installing a special sensoror the like. <P>SOLUTION: In the remote image monitoring system for transmitting encoded moving picture compression data by a transmitting part via a transmission line and for monitoring a decoded moving picture by a receiving part, a picture type of the compression data is detected from the received compression data by the receiving part, when the detected picture type of the compression data is intra-picture, preset prescribed image data is outputted to a monitor and a reference picture memory, when the detected picture type of the compression data is inter-picture, image data formed by performing decoding processing of the detected compression data and image data stored in the reference picture memory at the time are added together, outputted to the monitor and the reference picture memory and the noticing image to be monitored is made possible to be displayed on the monitor. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to a method and apparatus for compressing and transmitting an image, and more particularly to a method and apparatus for displaying an image of interest that enables only an image of interest such as a changing image to be displayed, and a remote image monitoring system.

  At present, in remote image monitoring systems, as the transmission path is being digitized rapidly, as typified by the Internet, the need for devices for digitizing and transmitting images is rapidly expanding. On the other hand, when an image is digitized, the amount of information becomes enormous, so that a moving image compression technique is always required. Here, most of the required moving image compression methods are world standard methods such as MPEG-2 and MPEG-4.方式 These methods basically aim at accurately compressing an input image to a transmission apparatus, and are techniques for reducing compression deterioration as much as possible.

  On the other hand, the image monitoring system focuses mainly on the changed area in the captured monitoring target image. For example, monitoring the entry of a suspicious person into a prohibited area, monitoring traffic such as the flow of a car, monitoring the movement of a person present in a target area (for example, a place where objects that cannot be touched such as a showroom are placed), etc. It is. As described above, in the image monitoring system, an accurate entire area of the target monitoring target image of MPEG-2 or MPEG-4 is not always necessary.

In such an image monitoring system, as a conventional technique for focusing on a change area of an image, a sensor using infrared rays or the like is installed in the prohibited area, an intruder is detected by the sensor, and the prohibited area is detected. It has been common to transmit a captured image and simultaneously transmit a detection signal from the sensor to a receiving side, and notify an alarm to a supervisor (a person who monitors the transmitted image).
INTERNATIONAL STANDARD ISO / IEC 13818-2: 2000, “Information technology-Generic coding of moving pictures and associated audio information: Video”

(4) In the conventional technique, a sensor is always required. However, if the area to be detected is complicated, the sensor cannot be installed at an optimal position for the detection, so that there is a drawback that the appropriate detection cannot be performed.

Furthermore, conventional technologies cannot cope with traffic monitoring such as the flow of a vehicle in which the definition of the detection area is not clear or monitoring whether an object in the area has moved or not.

It is an object of the present invention to provide a method and apparatus for displaying an image of interest and a remote image monitoring system that solve the problems of the conventional technology.

Another object of the present invention is to provide a method and an apparatus for displaying an image of interest, and a remote image monitoring system capable of displaying only a changed portion in the entire area of an image to be monitored without installing a special sensor or the like. .

That is, in one aspect of the present invention, in view of the above-described problems of the related art, attention is paid to the compression technique in the time axis direction in the moving image compression method, By forcibly clearing the data in the picture memory that stores the reference image used for decoding the compressed image data, only the changed part in the entire area of the monitoring target image can be displayed, and special sensors are installed. The above disadvantages are solved without doing.

Here, a picture refers to a single image constituting a moving image, and may be called a frame.

According to one aspect of the present invention, in order to achieve the above object, in the method of displaying an image of interest according to the present invention, after receiving encoded compressed data for a moving image via a transmission path, the received compressed image data The picture type of the compressed data is detected, and the data to be output to the memory and the monitor is switched according to the picture type of the received compressed moving picture data. For example, when the picture type of the detected compressed data is an intra picture, predetermined image data is output to a monitor for display and stored in a memory. On the other hand, when the picture type of the detected compressed data is an inter picture, the image data obtained by decoding the received compressed data is added to the image data stored in the memory, and the data obtained by the addition is added. Is output to the monitor and displayed, and is stored in the memory. As a result, it is possible to display a notable monitoring target image on the monitor.

Since the header information is added to the compressed data, the picture type of the compressed data is detected from the header information.

In other words, the present invention focuses on the fact that the moving image compression method required for the remote image monitoring system uses a compression technique in the time axis direction. The compression technique in the time axis direction is intra picture compression data that allows complete decoding of the picture using only the compression data of the target picture, and decoding that precedes and follows the compression data of the target picture on the time axis This is realized by inter-picture compressed data in which the picture is completely decoded by the addition with the added picture.

Therefore, in the present invention, when the encoded picture type detection unit detects that the compressed data input from the transmission path is intra-picture compressed data, the fixed picture data set in advance is output to the monitor, and the reference picture Input to memory. On the other hand, when the encoded picture type detection unit detects that the compressed data is the inter-picture compressed data, a normal decoding process is performed. Here, as an example of the fixed image data, an image of a gray surface or the like can be considered.

As a result, in the entire area of the monitoring target image, for a portion having no motion, fixed image data (for example, a gray image) is obtained, and only a moving region is an inter picture corresponding to difference information from a previous picture on a time axis. Is output, it is possible to realize a remote image monitoring system capable of focusing on a changed portion.

According to the present invention, since it is possible to receive and display the difference information of the movement only in a region having a movement that is particularly important in the monitoring target image, the monitor can easily grasp the state to be careful in the reception image. Can be.

In addition, since the area in which the movement occurs even for a moment is displayed differently from the fixed image data, it is possible to prevent the area from being overlooked.
Further, since the present invention relates to the image receiving unit, the conventional compressed data can be used as it is, and the same effect can be obtained for the compressed data filed by the conventional technology.

As a result, an optimal remote image monitoring system can be realized in monitoring focusing on the movement in the target image.

Here, before describing the present invention, a configuration example and operation of a decoding process in a normal remote image transmission system having no sensor for detecting an intruder or the like will be described with reference to FIG.

FIG. 3 shows an example in which image data from the camera 2-1 is displayed on a video monitor 2-8 via a transmission path 2-5. On the camera 2-1 side, there is an image transmission unit 2-3, which receives the video signal 2-2, compresses the image, and outputs the compressed data 2-4 to the transmission path 2-5. On the video monitor 2-8 side, there is an image receiving unit 2-7, which receives the compressed data 2-6 from the transmission path 2-5, performs a decoding process, and converts the video data 2-18 into the video monitor 2-8. Output to

Here, the compressed data 2-4 and 2-6 will be described. Image compression is described in INTERNATIONAL STANDARD ISO / IEC 13818-2: 2000, “Information technology-Generic coding of moving pictures and associated audio information: Video” (Non-Patent Document 1).

復 号 Also, the decoding process in the configuration shown in FIG. 3 is described in “ITU-T Rec. H.262 (2000 E), p61, etc.” of Non-patent Document 1.

In general, compressed data is configured by sequentially arranging compressed data in picture units. here,
There are two types of pictures: Intra-coded (I) picture (herein referred to as Intra picture) and inter-picture. Inter-pictures are Predictive-coded (P) picture and Bidirectionally predictive-coded (B) There is a picture (see “ITU-T Rec. H.262 (2000 E) Intro.4.1.1 Temporal processing and p. 12, 16” in Non-Patent Document 1).

Therefore, there are two types of compressed data in picture units: intra-picture compressed data and inter-picture compressed data. Intra-picture compressed data is compressed data that can reproduce a target picture using only the compressed data. On the other hand, the inter-picture compressed data is compressed data that can reproduce the target picture by decoding the compressed data and adding the decoded data to the decoded pictures preceding and succeeding on the time axis. That is, the predictive-coded (P) picture of the inter-picture compressed data is obtained by compressing the difference data from the previous (past) picture, and is bidirectionally predictive-coded (B) picture before and after (past and / or future). ) Is compressed. Normally, “I” indicates intra-picture compressed data, “P” indicates inter-picture compressed data corresponding to difference information from the previous picture on the time axis, and “past and / or future” on the time axis. The inter-picture compressed data, which is the compressed data corresponding to the difference information from the picture No. 1, is represented by the symbol “B”.

In the following description, for the sake of simplicity of explanation, only a predictive-coded (P) picture will be described as an inter picture, but the present invention is a predictive-coded (P) picture and a bidirectionally predictive-coded ( B) Of course, it can be easily applied to a case including a picture.

The following is an example of the compressed data sequence.
I (1) P (2) P (3) ... P (N) I (N + 1) P (N + 2) P (N + 3) ...
I: Intra-picture compressed data, P: Inter-picture compressed data Numbers in parentheses indicate the order of pictures.

で は Thus, in the compressed data, inter-picture compressed data is arranged between periodic intra-picture compressed data. The relationship between these and the reproduced picture is as follows.

F (1) = D (I (1))
F (2) = D (P (2)) + F (1) = D (P (2)) + D (I (1))
F (3) = D (P (3)) + F (2) = D (P (3)) + D (P (2)) + D (I (1))
F (N) = D (P (N)) + F (N-1) = D (P (N)) + D (P (N-1)) +...
+ D (P (3)) + D (P (2)) + D (I (1))
D (): Decoded data, F (): Playback picture.

That is, in the above example, the inter-picture compressed data indicated by P is assumed to be data in which difference information from the immediately preceding picture on the time axis is compressed. Then, it can be seen that F (2) to F (N-1) are reproduced by adding data obtained by sequentially decoding the difference information with reference to D (I (1)) or F (1).

Here, using the example of the compressed data, the internal operation of the image receiving section 2-7 in FIG. 3 will be described with reference to FIG. 4 showing a timing chart of data in each section in FIG. First, when the compressed intra-picture data I (1) is input from the transmission path 2-5, the coded picture type detection unit 2-9 detects that the data is intra-picture compressed data. More specifically, since header information indicating the type of compressed data is usually added to the head of the compressed data for each picture, detection is performed based on the header information. This header information is described in “ITU-T Rec. H.262 (2000 E), Non-Patent Document 1, 6.23 Picture header on page 27, and is a picture coding type described in Table 6-12 on page 47. The picture decoding processing unit 2-12 decodes the compressed intra-picture data I (1) and adds the decoded D (I (1)) or F (1) as data 2-13. As described above, the intra-picture compressed data becomes a reproduced image only with the compressed data, and in this case, the value of the data 2-19 which is one input of the adder 2-15 is changed. The switching unit 2-17 is controlled by the control signal 2-10 from the coded picture type detection unit 2-9 so that it becomes zero. Detects that is compressed intra-picture data, The control signal 2-10 is set to, for example, a low level (L), the terminal T3 of the switching unit 2-17 is connected to the terminal T1, and a value of zero is given to the adder 2-15 as data 2-19. The previous video data 2-18 which is the output of the adder 2-15 is input to the input of the picture memory 2-14, in which case the data 2-13 and the video data 2-18 are the same data. , D (I (1)) or F (1), and is displayed on the video monitor 2-8. The reference picture memory 2-14 stores the D (I (1)) or F (1). Will be accumulated.

Next, when P (2) is input, the coded picture type detection unit 2-9 detects that it is inter-picture compressed data, and switches the switching unit 2-17 by the control signal 2-10 to the intra-picture compressed data. Is controlled to select the opposite of the case. That is, when the coded picture type detection unit 2-9 detects that the received compressed data is inter-picture compressed data, it sets the control signal 2-10 to, for example, a high level (H), and sets the terminal T3 of the switching unit 2-17. Is connected to the terminal T2, and the picture data stored in the memory 2-14 is given to the adder 2-15 as data 2-19.

The picture decoding unit 2-12 decodes P (2) and outputs data 2-13 to the adder 2-15 as D (P (2)). The switching unit 2-17 selects the output of the reference picture memory 2-14 by the control signal 2-10, so that the video data 2-18 is D (P (2)) + D (I (1) ), And is displayed on the video monitor 2-8 as a reproduced picture F (2). At this time, since the input of the reference picture memory 2-14 is the video data 2-18, D (P (2)) + D (I (1)) is stored in the reference picture memory 2-14. .

Similarly, when P (3) is input, the coded picture type detection unit 2-9 detects that the data is inter-picture compressed data, the control signal 2-10 is at a high level, and the switching unit 2-17 , The control is performed so as to select the reverse of the case of the compressed intra-picture data, that is, to select the terminal T2. The picture decoding unit 2-12 decodes P (3) and outputs data 2-13 to the adder 2-15 as D (P (3)). The switching unit 2-17 includes:
Since the output of the reference picture memory 2-14 is selected by the control signal 2-10, the video data 2-18 is D (P (3)) + D (P (2)) + D (I (1)) Is displayed on the video monitor 2-8 as a reproduced picture F (3). At this time, since the input of the reference picture memory 2-14 is the video data 2-18, D (P (3)) + D (P (2)) + D (I (1 )) Is accumulated.

As described above, the same operation is repeated up to P (N), and when I (N + 1) is input, the operation becomes the same as the case of I (1) described above. The above is the description of the configuration and operation of the decoding process in the ordinary remote image transmission system having no sensor for detecting an intruder or the like. As described above, in an image transmission system without a sensor, a notable monitoring target image such as an intruder cannot be detected, and an alarm signal cannot be output. Must be monitored closely.

Therefore, the present invention realizes an image monitoring system capable of displaying only a target image to be monitored, such as an intruder, on a monitor without using a sensor. FIG. Show and explain. The configuration in FIG. 1 is the same as the configuration in FIG. 3 except for the image receiving unit 1-1, and in FIG. 1, components having the same functions as those in FIG. Is omitted. In the image receiving unit 1-1, the coded picture type detecting unit 2-9 receives the compressed data 2-6 and outputs the compressed data 2-11 and the control signal 1-2. The picture decoding unit 2-12 receives the compressed data 2-11 and outputs data 2-13. In the configuration of FIG. 1, the picture decoding processing unit 2-12 is located downstream of the coded picture type detection unit 2-9. Conversely, the coded picture type detection unit 2-12 is located downstream of the picture decoding processing unit 2-12. There may be a part 2-9. That is, the picture type may be detected after the decoding processing. The coded picture type detection unit 2-9 and the picture decoding processing unit 2-12 constitute a reception data processing unit. The switching unit 1-3 outputs one of the fixed image (background image) data F (1-8) output from the fixed image (background image) data memory 1-7 and the data 2-13 to the control signal 1-2. To select data 1-4. The adder 1-14 receives the data 1-4 and the data 1-13, and outputs the result of the addition to the video monitor 2-8 as video data 1-9. The video data 1-9 is also input to the reference picture memory 1-10.

On the other hand, the switching unit 1-12 selects the data 1-11 or the value 0, which is the output of the reference picture memory 1-10, according to the control signal 1-2, and sets it as data 1-13.
In the above configuration, the operation of the image receiving unit 1-1 when the same compressed data used in the description of FIG. 3 is input will be described with reference to FIG. 2 which shows a timing chart of data in each unit of FIG. explain. First, when I (1) is input from the transmission path 2-5, the coded picture type detection unit 2-9 detects that it is intra-picture compressed data. Specifically, as described above, usually, header information (picture coding type) indicating the type of the compressed data is added to the head of the compressed data in each picture unit, so that the detection is performed based on the header information. The picture decoding unit 2-12 decodes I (1) and outputs data 2-13 as the decoded data D (I (1)) or F (1).

Here, when the data 2-13 is intra-picture compressed data, the switching unit 1-3 sets the control signal 1-2 to, for example, low level (L), and connects the terminal T6 to the terminal T5, that is, The solid image (background image) data F (1-8) output from the fixed image (background image) data memory 1-7 is controlled to be input to the adder 1-14 as data 1-4. Is done. Also, at this time, the switching unit 1-12 is similarly controlled to connect the terminal T3 to the terminal T1 by the control signal 1-2 (low level), that is, to select the value zero, and accordingly, the value zero. Is output to the adder 1-14. Since the value zero is thus input from the switching unit 1-12 to the adder 1-14, the video data 1-9 which is the output data of the adder 1-14 is the data 1-4 as it is. Therefore, at this time, the data of the fixed image data F (1-8) is displayed on the video monitor 2-8. Here, as an example of the fixed image data F (1-8), an image of a single color (for example, gray) on the entire surface can be considered. The fixed image data F (1-8) is not limited to this, and may be an image composed of patterns of several colors. An image with a fluctuating pattern may be used. In short, any image can be used as long as the changing image area can be easily recognized.

At this point, since the input to the reference picture memory 1-10 is the video data 1-9, the gray image data of the fixed image data memory 1-7 is stored in the reference picture memory 1-10.

Next, when P (2), which is difference data from the previous picture, is input, the coded picture type detection unit 2-9 detects that the data is inter-picture compressed data, and the control signal 1-2 indicates The switching units 1-3 and 1-12 are controlled so as to select the reverse of the case of intra-picture compressed data. That is, the control signal 1-2 becomes, for example, a high level (H), and controls to connect the terminal T6 to the terminal T4 and connect the terminal T3 to the terminal T2. The picture decoding unit 2-12 decodes P (2) and outputs data 2-13 as decoded data D (P (2)). Since the switching unit 1-3 selects the data 2-13 by the control signal 1-2, the data 1-4 is the data 2-13, that is, D (P (2) which is difference data from the previous picture. ) Is input to the adder 1-14. On the other hand, the switching unit 1-12 selects the output (gray image data F) of the reference picture memory 1-10 by the control signal 1-2, so that the video data 1-9 is D (P (2) ) + Gray image, which is supplied to the video monitor 2-8. At this time, on the video monitor 2-8, a changed image, which is difference data from the preceding and following pictures, is superimposed and displayed on a gray background. At this time, since the input to the reference picture memory 1-10 is data 1-9, the reference picture memory 1-10 stores the D (P (2)) + gray image.

Similarly, when P (3) is input, the coded picture type detection unit 2-9 detects that the data is inter-picture compressed data, and controls the switching units 1-3 and 1-12 according to the control signal 1-2. Control is performed so that the reverse of the case of intra-picture compressed data is selected. The picture decoding unit 2-12 decodes P (3) and outputs data 2-13 as D (P (3)). Since the switching unit 1-3 selects the data 2-13 by the control signal 1-2, the data 1-4 is data 2-13, that is, D (P (3 )) And input to the adder 1-14.

On the other hand, the switching unit 1-12 selects the D (P (2)) + gray image F which is the output of the reference picture memory 1-10 by the control signal 1-2. , D (P (3)) + D (P (2)) + gray image, which are supplied to the video monitor 2-8. At this time, on the video monitor 2-8, a changed image, which is difference data from the preceding and following pictures, is superimposed and displayed on a gray background.
At this time, since the input of the reference picture memory 1-10 is the video data 1-9, the reference picture memory 1-10 stores D (P (3)) + D (P (2)) + gray image F (1-8) is accumulated.

As described above, the same operation is repeated up to P (N), and when I (N + 1) is input, the operation becomes the same as the case of I (1) described above. That is, in the present invention, the display on the video monitor 2-8 when P (N) is input is as follows.

G (N) = D (P (N)) + G (N-1)
= D (P (N)) + D (P (N-1)) +... + D (P (3)) + D (P (2)) + Gray image D (): decoded data. G (): Indicates a display picture.

As is apparent from this equation, in the present invention, only the difference information can be displayed with the background image (fixed image, for example, an entire gray image) as the background. As a result, in the entire screen, the difference information is displayed for the area where there is a movement, and the gray image is displayed for the area where there is no movement, which is the most suitable for focusing on the moving area in the monitoring target screen. A remote image monitoring system based on images can be realized.

In the above description, the fixed image data 1-8 is a gray image as an example, but the present invention can be applied to other image data.

  In the above-described embodiment, a predetermined number of inter-picture compressed data is input after the intra-picture compressed data is input to the image receiving unit 1-1 until the next intra-picture compressed data is input. In this case, after the difference information is successively added to the background image and displayed on the video monitor 2-8, only the background image is displayed again. As a result, for example, when the camera 2-1 is shooting a flying ball, the trajectory of the ball is displayed on the video monitor 2-8 in real time, and then the ball disappears and only the background image is displayed. You. This display is repeated in an intra-picture cycle.

Therefore, I (1), P (2) to P (N), I (N + 1) (where I (1) and I (N + 1) are intra pictures, and P (2) to P (N) are inter pictures) Is input on the video monitor 2-8 as shown in the following equation, so that even when the ball 2-1 is shot by the camera 2-1, only the ball hopping in the background image is displayed. The ball can be added and displayed in real time, and the ball can be prevented from disappearing in the intra-picture cycle.

G (1) = background image G (2) = D (P (2)) + background image G (3) = D (P (3)) + background image
 :
G (N) = D (P (N)) + background image G (N + 1) = D (P (N)) + background image D (): decoded data. G (): Indicates a display picture.

In order to enable display according to the above formula, as another embodiment, a remote image monitoring system having the configuration shown in FIG. 5 is used, and nothing is initially stored in the reference picture memory 1-10. In addition to the above state, the coded picture type detection unit 2-9 controls the switching units 1-3 and 1-12 as described in (1) and (2) below.

(1) When the picture type detection unit 2-9 detects that the data is intra-picture compressed data, the terminal T6 is connected to the terminal T5, and the terminal T3 is connected to the terminal T2.

(2) When the picture type detection unit 2-9 detects that the data is inter-picture compressed data, control is performed so that the terminal T6 is connected to the terminal T4 and the terminal T3 is connected to the terminal T1.

With this control, after the background image is first displayed on the video monitor 2-8, the difference information is updated and displayed one after another, and the data stored in the reference picture memory 1-10 is also updated one after another. Is done. When the compressed intra-picture data is input to the image receiving unit 1-1 again, data obtained by decoding the inter-picture compressed data immediately before the compressed intra-picture data (stored in the reference picture memory 1-10). The data corresponding to the video data obtained by adding the image data and the background image is displayed. Thereafter, similarly, difference information is successively updated and displayed on the video monitor 2-8. With this display, it is possible to realize a remote image monitoring system using an optimal image to focus on a moved area in the monitoring target screen.

FIG. 1 is a block diagram showing a configuration of a remote image monitoring system according to one embodiment of the present invention. FIG. 4 is a timing chart showing an operation of image data processing in the remote image monitoring system according to one embodiment of the present invention. FIG. 1 is a block diagram showing a configuration of a remote image monitoring system as a related art of the present invention. FIG. 4 is a timing chart showing an operation of image data processing in the remote image monitoring system according to the related art of the present invention. FIG. 6 is a block diagram showing a configuration of a remote image monitoring system according to another embodiment of the present invention.

Explanation of reference numerals

1-1: Image receiving unit 1-2: Control signal 1-3: Switching unit 1-4: Data 1-7: Fixed image data memory 1-8: Fixed image data 1-9: Video data
1-10: Reference picture memory 1-11: Data 1-12: Switching unit
1-13: Data 1-14: Adder 2-1: Camera 2-2: Video signal 2-3: Image transmitting unit 2-4: Compressed data 2-5: Transmission path 2-6: Compressed data 2-7 : Image receiving unit 2-8: Video monitor 2-9: Encoded picture type detecting unit 2-10: Control signal 2-11: Compressed data 2-12: Picture decoding processing unit 2-13: Data
2-14: Reference picture memory 2-15: Adder 2-16: Data 2-17: Switching unit 2-18: Video data 2-19: Data T1 to T6: Terminal

Claims (6)

Receiving encoded compressed data for the moving image via a transmission path;
Detecting a picture type of the received compressed data;
When the picture type of the detected compressed data is an intra picture, outputting predetermined image data to a monitor for display and storage in a memory;
When the picture type of the detected compressed data is an inter picture, the image data obtained by decoding the received compressed data is added to the image data stored in the memory, and the data obtained by the addition is added to the data. And displaying the image on a monitor and storing the image in the memory. Receiving encoded compressed data for the moving image via a transmission path;
Detecting a picture type of the received compressed data;
When the picture type of the detected compressed data is an intra picture, adding predetermined image data and image data stored in a memory, and outputting the added data to a monitor;
If the picture type of the detected compressed data is an inter picture, the received compressed data is decoded, and the image data stored in the memory is updated to the image data obtained by the decoding process. Adding the image data obtained by the decoding process and predetermined image data, and outputting the added data to the monitor. A reception data processing unit that detects the picture type of the encoded compressed data for the moving image received via the transmission path, performs a decoding process, and outputs the decoded image data;
A predetermined image data output unit that outputs predetermined image data,
Depending on the picture type of the compressed data detected by the received data processing unit, the decoded image data, or the predetermined image data is added to the addition unit,
A memory for storing the image data from the adder and, when the picture type of the compressed data detected by the received data processor is an inter-picture, storing the stored image data in the adder. Including
Depending on the picture type of the compressed data detected by the received data processing unit, the image data is output to a monitor and stored in the memory, or the decoded image data is stored in the memory. An image processing and displaying apparatus for an image of interest, wherein the image data is added to the image data, and the obtained data is output to the monitor and stored in the memory. A reception data processing unit that detects the picture type of the encoded compressed data for the moving image received via the transmission path, performs a decoding process, and outputs the decoded image data;
A predetermined image data output unit that outputs predetermined image data,
If the picture type of the compressed data detected by the received data processing unit is an intra picture, the stored image data is output, and if the picture type is an inter picture, the stored image data is the decoded image. Memory that is updated with data,
When the picture type of the compressed data detected by the reception data processing unit is an intra picture, the image data output from the memory and predetermined image data are added. Including an adding unit to which the obtained image data and predetermined image data are added,
Depending on the picture type of the compressed data detected by the received data processing unit, the image data stored in the memory is updated to the decoded image data, and the decoded image data and predetermined image data are updated. Or output the same to the monitor, or add the image data stored in the memory and predetermined image data, and output the added data to the monitor. Processing display device of the image of interest. A transmitting unit that transmits compressed data of encoded moving image data via a transmission path,
A receiving unit that receives the encoded compressed data of the moving image transmitted through the transmission path, decodes and displays the compressed data of the decoded moving image,
The receiving unit,
A reception data processing unit that detects the picture type of the encoded compressed data for the moving image received via the transmission path, performs a decoding process, and outputs the decoded image data;
A predetermined image data output unit that outputs predetermined image data,
Depending on the picture type of the compressed data detected by the received data processing unit, the decoded image data, or the predetermined image data is added to the addition unit,
A memory for storing the image data from the adder and, when the picture type of the compressed data detected by the received data processor is an inter-picture, storing the stored image data in the adder. Including
Depending on the picture type of the compressed data detected by the received data processing unit, the predetermined image data is output to a monitor and stored in the memory, or the decoded image data is stored in the memory. A remote image monitoring system configured to add the obtained image data and output the added data to the monitor and store the data in the memory. A transmission unit that transmits compressed data of the encoded moving image data via a transmission path,
A receiving unit that receives the encoded compressed data of the moving image transmitted through the transmission path, decodes and displays the compressed data of the decoded moving image,
The receiving unit,
A reception data processing unit that detects the picture type of the encoded compressed data for the moving image received via the transmission path, performs a decoding process, and outputs the decoded image data;
A predetermined image data output unit that outputs predetermined image data,
If the picture type of the compressed data detected by the received data processing unit is an intra picture, the stored image data is output, and if the picture type is an inter picture, the stored image data is the decoded image. Memory that is updated with data,
When the picture type of the compressed data detected by the reception data processing unit is an intra picture, the image data output from the memory and predetermined image data are added. Including an adding unit to which the obtained image data and predetermined image data are added,
The image data stored in the memory is updated to the decoded image data depending on the picture type of the compressed data detected by the received data processing unit, and the decoded image data and the predetermined image data are updated. Or output the same to the monitor, or add the image data stored in the memory and predetermined image data, and output the added data to the monitor. Remote image monitoring system.

Images