JPH034682A - Picture editing system - Google Patents

Abstract

PURPOSE:To shorten a time required for editing and to attain efficient editing by compressing a dynamic picture, editing a still picture through the use of the compressed dynamic picture and executing recording through the use of the dynamic picture before compression at the time of executing recording in a recording device. CONSTITUTION:Redundancy is removed from a real time picture from an A/D converter 12 and the picture is compression-processed in a real time compressor 15 and the picture is supplied to an erasable disk device 16. The erasable disk device 16 synthetically edits the multimedia of the still picture including video information, a graphics picture, an image picture and text information by interaction with a monitor device 19. A recording controller 13 selects video information corresponding to the condition of an editing parameter from an editing processor 14 by video information from VTR for reproduction 11.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) This invention relates to the processing of moving images from, for example, video tape recorders and TV (television) cameras, and graphics images generated by computers, etc. The present invention relates to an image editing method for comprehensively editing still images such as images and text information manually generated by a scanner.

(Prior art) In general, editing is performed by integrating moving images from a video tape recorder, TV left camera, etc., or still images, such as graphics images generated by a computer, images input by a scanner, text information, etc. In other words, in order to freely execute processes such as rewriting, erasing, changing the position/order, or replacing, random access and digital recording are required using recording media such as semiconductor memory, magnetic or optical disk devices. Become.

In particular, when editing moving images, there are no economical/small digital media that can record digitally and in real time. For this reason, conventionally, the analog format using magnetic tape was used.

However, analog format editing using magnetic tape has poor accuracy, takes a long time to edit, and
The drawback was that only simple editing could be performed.

(Problems to be Solved by the Invention) As mentioned above, the conventional analog format editing using magnetic tape for moving images has poor accuracy, takes a long time, and can only perform simple editing. There were drawbacks.

Therefore, the present invention makes it possible to freely edit moving images and still images on one type of digital media, and to shorten the time required for editing and to perform editing efficiently. The object of the present invention is to provide an image editing method that can obtain high-quality edited images.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the image editing method of the present invention includes editing a moving image and a still image together, and recording the same. In what is recorded on the device, the moving image is compressed, the compressed moving image is used to edit with a still image, and the moving image and still image edited by this processing are recorded on the recording device. At this time, the moving image is recorded using a moving image before compression.

(Function) According to the present invention, moving images can be recorded digitally and in real time by the above-described means, so that editing of moving images can be performed in a digital format.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows an outline of the image editing method of the present invention as a device. In FIG. 1, a reproduction VTR (video tape recorder) 11 records video information as an analog video moving image. VTRII for playback
The video information is supplied to an A/D converter (analog/digital converter) 12 and a recording controller 13. This reproduction VTRII is configured to specify its reproduction operation, reproduction address, reproduction speed, stop operation, etc. under the control of the editing processor 14.

The A/D converter 12 digitally encodes the video information from the reproduction VTRII. In this case, if the sampling frequency is, for example, 10 MHz, the standard NTSC (N
a t 1ona lTe1evision Sy
In the case of the stem commit tee method, the resolution is approximately 512 pixels horizontally and 512 lines vertically. Therefore, when calculating each pixel as 8 bits for red, green, and blue, it is 256KB (kilobytes) x 3-768KB.
/ screen. In the NTSC system, the number of screens per second is 30, so the amount of information generated is approximately 23MB (megabytes) in 7 seconds. The video information digitized by this A/D converter 12 is supplied to a real-time compressor 15 as a real-time image.

In the real-time compressor 15, redundancy is removed from the real-time image from the A/D converter 12. As a result, the real-time image is compressed. This compression method includes, for example, discrete cosine transform (DC
A known technique such as T) may be used. The compressed image compressed by this real-time compressor 15 is supplied to an erasable disk device (recording section) 16.

The compressed image from the real-time compressor 15 supplied to the erasable disk device 16 is recorded here. As the erasable disk device 16, a rewritable recording device with a large recording capacity, such as a magnetic disk device or a magneto-optical disk device, is mainly used.

Here, the recording/reproducing rate of the erasable disk device 16 is normally about 500 KB/sec. Therefore, the real-time compressor 15 is 46 times (
A compression rate of 23MB (1500KB) is required. However, if a compression rate of 46 times cannot be obtained due to the performance of the real-time compressor 15, for example, if the compression rate is 23 times, then decimation processing of 14 times is performed on two screens in the time axis direction.

Then, the deleted image may be recorded by the erasable disk device 16. Alternatively, the screen size of the recorded image may be reduced by the compression ratio.

Further, media information other than the video information to be edited with the video information is previously recorded in the erasable disk device 16. The media information is, for example, multimedia digital information such as still images, graphics images, image images, and text information.

The compressed image recorded on the erasable disk device 16 is read out and supplied to the real-time decompressor 17.

In this real-time decompressor 17, the compressed image from the erasable disk device 16 is subjected to processing opposite to compression, that is, decompression processing. The image data expanded by the real-time expander 17 is supplied to a D/A converter (digital/analog converter) 18.

The D/A converter 18 processes the image data from the real-time decompressor 17 for D/A conversion. The conversion process in this D/A converter 18 is controlled by a signal from the A/D converter 12.

The image data D/A converted by the D/A converter 18 is displayed on the monitor device 19 as an analog image.

Further, the D/A converter 18 is supplied with media information (digital information) other than video information from the erasable disk device 16. This digital information is
The signal is converted into an analog signal by the D/A conversion process of the /A converter 18. Analog information converted by the D/A converter 18 is displayed on a monitor device 19.

On the other hand, in the erasable disk device 16, comprehensive editing of multimedia such as still images including video information, graphics images, image images, and text information is performed through interaction with the monitor device 19. That is, while referring to the analog image and analog information displayed on the monitor device 19, the editing processor 1
4 controls the erasable disk device 16.

As a result, in response to the simulation, change, addition, and modification of the analog image and analog information in the monitor device 19, processing such as rewriting, erasing, position/order conversion, and replacement of the compressed image and digital information is made erasable. It is executed in the disk device 16. Also, at this time, the editing processor 14 determines editing parameters (editing conditions) such as the timing of transitions.

The editing parameter conditions determined by the editing processor 14 are supplied to the recording controller 13 and the like.

The recording controller 13 selects video information according to the editing parameter conditions from the editing processor 14 from the video information (analog image) from the reproduction VTRII.

Regarding this video information, the compressed image recorded on the erasable disk device 16 is not targeted, but the reproduction VT
A raw analog video motion picture recorded on the RII is selected. The video information selected by the recording jIi controller 13 is supplied to the recording VTR (recording file) 20 according to the conditions of the editing parameters from the editing processor 14.

Further, media information (digital information) other than video information from the erasable disk device 16 is supplied to the recording VTR 20 via the D/A converter 18, the recording controller 13, and the like. That is, the data is read from the erasable disk device 16, converted into analog by the D/A converter 18, and supplied as analog information via the recording controller 13.

In the recording VTR 20, video information from the recording controller 13 and media information other than the video information are combined and recorded. As a result, a composite image of a video moving image and media information other than the video moving image, such as a still image, a graphics image, an image image, and text information, is recorded on the recording VTR 20 as an analog image. This recording VTR 20 is configured to specify its recording operation, recording address, stop operation, etc. under the control of the editing processor 14.

Next, the operation in the above configuration will be explained.

Analog video information read out from the reproduction VTRII is A/D converted by an A/D converter 12, compressed by a real-time compressor 15, and then recorded in an erasable disk device 16 as a digital compressed image. Ru. The compressed image recorded on this erasable disk device 16 is read out, decompressed by a real-time decompressor 17, D/A converted by a D/A converter 18, and then displayed on a monitor device 19 as an analog image. Ru.

In this state, the erasable disk device 16 is controlled by the editing processor 14 through interaction with the monitor device 19 . This enables simulations that integrate multimedia such as still images, graphics images, images, and text information, including video moving images.
Processes such as changes, additions, and corrections are performed. At the same time, conditions for editing parameters in the process are determined.

In this way, when the conditions of the editing parameters are determined, the video moving image is processed by the erasable disk device 1
The video moving images according to the conditions of the above editing parameters are not targeted at the compressed images recorded in 6.
Reproduced by RII. This reproduced video moving image is sent to the recording VTR 20 via the recording controller 13. At this time, the recording controller 13 is controlled by the editing processor 14 according to the conditions of the editing parameters. Further, the editing processor 14 controls the designation of the recording operation, recording address, stop operation, etc. of the recording VTR 20, so that the video moving image is recorded on the recording VTR 20.

Furthermore, media information other than video moving images is read out from the erasable disk device 16 and subjected to D/A conversion by the D/A converter 18, and then transferred to the recording controller 13.
supplied to Then, the recording controller 13 and the recording V
By controlling the TR 20 by the editing processor 14, media information other than the video moving image is combined with the video moving image and recorded on the recording VTR 20.

As described above, video moving images can be recorded digitally and in real time, so that editing of video moving images can be performed in digital format.

In other words, editing that integrates video information and media information other than video information, that is, editing that integrates multiple media information such as video moving images, still images, graphics images, image images, text information, etc. This can be done using an erasable disk device. Therefore, editing of video moving images can be performed freely, quickly, and efficiently on one type of digital media.

In addition, for video moving images, processing such as editing is performed using compressed images on digital media.
The video moving image (original image) that is played back according to the editing parameter conditions obtained through the above processing is used and recorded on the recording VTR together with other media information.

Therefore, it is possible to obtain a high-quality image as an edited image by using an uncompressed image without image deterioration or missing parts in a video moving image.

In the above embodiment, an erasable disk device is used as the recording section, but the present invention is not limited to this, and it is also possible to use, for example, an optical disk device in which data cannot be rewritten, or a semiconductor memory.

It goes without saying that various other modifications can be made without departing from the gist of the invention.

[Effects of the Invention] As detailed above, according to the present invention, it is possible to freely edit moving images and still images on one type of digital media, and the time required for editing can be reduced. It is possible to provide an image editing method that allows for shortened and efficient editing, as well as obtaining high-quality edited images.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an apparatus schematically showing an embodiment of the present invention. 11... VTR for reproduction, 13... Recording controller, 14
...Editing processor, 15...Real-time compressor, 1
6... Erasable disk device (recording section) 20...
- Recording VTR (recording file).

Claims (1)

[Claims] In a device that edits a moving image and a still image together and records the same in a recording device, the moving image is compressed and the compressed moving image is used to edit the still image. An image editing method characterized in that, when the moving image and still image edited by this processing are recorded in the recording device, the moving image is recorded using a moving image before compression.