JPH04192975A - Image processor - Google Patents

Abstract

PURPOSE:To easily display a quantized image by providing a means for setting the background part of the quantized image taken into a memory and a means for variably setting a prescribed level. CONSTITUTION:The output from a video/background switching device 15 is switched to a background brightness and color level forming device 12 side and the set brightness and color level becomes the output of the whole part of the effective image of the device 15 when a control signal 14 is applied to the device 15. The brightness and color of a certain fixed value, for example, a video black level and achromatic color, are outputted as the brightness and color of a reproduced image range without depending on the reproduced image brightness and color previously set by a reproduced image brightness and color setting device 8 when a control signal 11 is applied to a reproduced image range brightness and color forming device 9. The quantized image is easily visibly displayed in such a manner by varying the level of the color and brightness of the background part at the time of displaying the quantized image.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to digital memory devices.

[Conventional technology]

Conventional digital memory devices reproduce stored data on an image during a so-called "impose" operation, in which image data is reproduced on a normal image at a certain reproduction timing according to reproduction brightness and color specification values set for the imposed image. The structure is such that it can be played over and over again.

[Problem that the invention is trying to solve] However,
In the conventional example, after storing image data in a memory device, if the above-mentioned playback operation is performed without changing the image being captured or the angle of view, the captured and played back image and the original image may differ. Since images are displayed at the same or near the same position on a monitor such as a television, it is often difficult to determine which image range has been captured into the memory device. In particular, when the designated values of brightness and color of the reproduced image at the time of reproduction are similar to those of the imported original image, it is extremely difficult to identify the reproduced image.

In view of this, the present invention provides an image processing device in which the background of a quantized image is set at a predetermined level so that the captured image can be easily recognized, and the brightness or color of the background part is variable. purpose.

[Means to solve the problem]

In order to achieve the above-mentioned objects, the present invention provides a means for quantizing a subject image and importing it into a memory, a means for setting a background part to a predetermined level when displaying the quantized image taken into the memory by the means, and making the predetermined level variable. and means for setting.

〔Example〕

FIG. 1 is a block diagram of a device according to a first embodiment of the present invention. In FIG. 1, 1 is a semiconductor memory element having a memory function, 2 is a control line of this memory element, and 3 is data input/output data. line, 4 is each timing generator, 5 is an image capture switch, 6 is an image playback switch,
7 is a playback image brightness/color setting switch; 8 is a playback image brightness/color setting device that stores the setting state of the switch 7; 9 is a device that generates brightness/color data of the playback image range according to the settings of the setting device 8. , 10 is a reproduction image range signal transfer line;
Reference numeral 11 indicates a signal line 10 for controlling the brightness and color of the reproduced image in which the pattern is expressed. Reference numeral 12 indicates the brightness and color of the effective image portion (displayed as background in the figure) other than the reproduced image range, which is a feature of this embodiment. A color data generation device; 13 is a switch for setting the color data of the background; 14 is a video/background switching signal line; 15 is a video/background switching device that inputs an image signal based on the signal on line 14; switches the output of the generator 12.

16 is a reproduced image synthesis device which combines the output of device 9 and device 15.
Synthesize the output of . Reference numeral 17 denotes an image signal quantization data conversion device that converts the image signal input IN into quantization data when the image synthesis device 16 outputs the image signal input IN as it is, for example.

In FIG. 1, when the capture switch 5 is turned on, the quantized data obtained from the quantized data converter 17 is sent to the memory device 1 together with the memory address generated from each timing generator 4, and the quantized data is stored in memory. At this time, the previous data that has already been stored and played back is further quantized, and in order to prevent data duplication, when data is stored in memory 1, the previous data is erased and the synthesis of the played image is stopped at each timing. Generator 14
controlled by

In addition, in order to immediately check the captured image, a timing similar to when the image reproduction switch 6 is automatically turned on after the new data has been captured into the memory may be generated.

The following description will be made assuming that the image reproduction switch 6 is turned on. In FIG. 1, when the switch 6 is turned on, the memory address is sent from each timing generator 4 to the memory device 1, and the stored data is transferred to each timing generator 4, and after being decoded, for example. , is supplied to the reproduction image range luminance/color generating device 9 via the transfer line 10 as a reproduction image range signal. Further, the playback image range brightness/color generation device 9 is given a setting signal from the playback image brightness/color setting device 8, and each time the playback image brightness/color setting switch 7 is turned on, the playback image brightness/color setting device It is configured such that arbitrary reproduced image brightness and color can be obtained by changing the internal state of 8. The brightness and color output to the reproduced image range by these devices are sent to the reproduced image synthesis device 16, where they are synthesized with the normal image signal IN and output.

In this embodiment, the video/background switching signal line 14 and the reproduced image brightness/color control signal line 11 are synchronized with the output from the above-mentioned 9, that is, the output of the reproduced image range signal, from each timing generator 4. A background switching signal 14 is sent to a video/background switching device 15, and a reproduced image brightness/color control signal is sent to a reproduced image range brightness/color generating device 9. These signals control each device for a period of time sufficient to identify the captured and reproduced image on a TV monitor or the like.

That is, the control signal 14 is sent to the video/background switching device 15.
When , the output from the device 15 is switched to the background brightness/color level generation device 12 side.

In this state, each time the background brightness/color setting switch 13 is turned on, the internal state of the background brightness/color level generating device 12 is changed, so that the output of the background brightness/color level generating device 12 can be arbitrarily set. The set brightness/color level becomes the output of the entire effective image portion of the video/background switching device 15. Note that the background brightness/color setting switch 13 may be omitted, and the background brightness/color level during control may be fixed to a certain constant value, for example, the image white level and an achromatic color, and then output.

Furthermore, when a control signal is given to the reproduced image range luminance/color generating device 9, the luminance/color of a certain constant value is generated, regardless of the reproduced image luminance/color set in advance by the reproduced image luminance/color setting device 8. For example, the video black level and achromatic color are output as the brightness and color of the reproduced image range. Note that the control signal is not given to the playback image range brightness/color generation device 9, but to the playback image brightness/color setting device 8, and the desired playback image brightness/color is set in advance as one of the selection values, and the control signal is Sometimes the circuit may be configured to be set to this selected value.

In this case, in order to restore the state to the brightness and color settings before the control when the control ends, it is necessary to remember the state before the control.

After the above control is completed, the normal imposed state is restored.

Although not shown in the block diagram, an external changeover switch may be provided for the purpose of maintaining the control state and preventing transition to the normal state.

Furthermore, in order to prevent the mixing of switching noise into the screen during the control time, each timing generator 4 may be configured to set the start and end timings of the control during the vertical retrace period.

[Other Examples]

FIGS. 2 and 3 are block diagrams showing other embodiments of the present invention, and the same elements as those of the first embodiment of the present invention shown in FIG. omitted.

The difference from FIG. 1 is that the video/background switching device 15 is arranged after the reproduced image synthesizing device 16. In this case, the reproduced image composition is obtained as the output of the reproduced image composition device 16 in the same way as in the normal imposed state, so in order to obtain the same effect as the embodiment shown in FIG. The control signal given by the timing generator 4 has timing to gate only the effective image portion outside the reproduced image range and switch with the signal sent from the background brightness/color level generator 12.

Fig. 3 is a modification of Fig. 2, which realizes the same function as Fig. 2 by using a white fade circuit 18, which is often installed as an additional function in video camera equipment. In addition to the white fade operation function, the signal on the signal line 14 is sent from each timing generator 4 to the white fade circuit 18 during the control period of this embodiment, and the white fade function is instantaneously activated during the gate period. As a result, the same effects as in the above-mentioned embodiments are obtained.

Further, in this embodiment, the quantization data conversion device 17 is used as a means for quantizing the subject image and importing it into the memory.

Further, in this embodiment, the background brightness/color level generation device 12 is used as a means for setting the background portion to a predetermined level when displaying the quantized image captured by the means.

Further, in this embodiment, the switch 13 is used as a means for variably setting a predetermined level of the background portion.

〔Effect of the invention〕

According to the present invention described above, when displaying a quantized image as a binary image, for example, it is possible to display the quantized binary image in an easy-to-see manner by making the color and brightness level of the background part variable. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a first embodiment of the present invention, FIG. 2 is a block diagram of a second embodiment of the present invention, and FIG. 3 is a block diagram showing a modification of the second embodiment of the present invention. It is a diagram. 1 is the memory, 2 is the memory control line, 3 is the data input/output line, 4 is each timing generator, 5 is the image capture switch, 6 is the image playback switch, 7 is the playback image brightness/color setting switch, 8 is the playback Image brightness/color setting device; 9, reproduction image range brightness/color generation device; 10, reproduction image range signal transfer line; 11, reproduction image brightness/color control line; 12, background brightness/color level generation device; 13, background Brightness/color setting switch, 14 is a video/background switching signal line, 15 is a video/background switching device, 16 is a reproduced image synthesis device, 17 is an image signal quantization data conversion device, 18 is a white fade device, 19 is a fade switch . Figure 3 ■416 yen power

Claims (1)

[Claims] (1) A means for quantizing a subject image and capturing it in a memory, a means for setting a background portion to a predetermined level when displaying the quantized image captured in the memory by the means, and a means for variably setting the predetermined level. An image processing device characterized by: