JPH0433478A - Image pickup device - Google Patents

Abstract

PURPOSE:To improve the visual effect due to focus-in or focus-out by driving a focus control circuit and a mosaic control circuit applying mosaic processing to an input picture signal almost simultaneously. CONSTITUTION:A mosaic control circuit 14 uses an output of a signal processing circuit 13, that is, a picture signal obtained by pickup as an input picture signal to control mosaic processing of the input picture signal. Moreover, the operation of a focus control circuit 12 and the mosaic control circuit 14 is started by the designation from an operation switch 15. Focus-in/focus-out causing a complete gradation picture is obtained by driving the focus control circuit 12 and the mosaic control circuit 14 almost simultaneously by the designation from the operation switch 15 in this way. Thus, the visual effect by the focus-in/focus- out is much enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an imaging device, and more particularly, to an imaging device that has both focus-in and focus-out functions using an optical system and a mosaic function using a mosaic control circuit of a signal processing system. .

2. Description of the Related Art A focus-in/focus-out mechanism in a conventional imaging device will be described with reference to FIG. In FIG. 4, 41 is a photographing lens, 42 is a focus control circuit that drives the photographic lens 41 and controls the focus, 43 is a signal processing circuit that performs signal processing of a subject image captured by the photographic lens 41, and 46 is a signal processing circuit that processes a subject image captured by the photographic lens 41. 45 is an operation switch; and 45 is an operation switch.

In the conventional imaging device configured as described above, the focus control circuit 42 controls the imaging lens 4 in response to a command from the operation switch 45 for focus-in and focus-out.
This has been achieved either by driving the focus control circuit 42 to focus or remove the focus, or by manually focusing or removing the focus without using the focus control circuit 42.

Problems to be Solved by the Invention However, in the conventional configuration described above, there is a limit to the range of lens movement of the optical system, and as a result, it is not possible to obtain a sufficiently blurred image, and it is difficult to obtain sufficient effects by focusing in and out of the captured image. The problem was that it was not possible to obtain

The present invention solves these conventional problems and has the following features:
It is an object of the present invention to provide an imaging device with improved focus-in and focus-out visual effects.

Means for Solving the Problems In order to achieve the above objects, the present invention provides a focus control circuit that controls focus-in and focus-out of an optical system, a mosaic control circuit that performs mosaic processing on an image signal obtained by imaging, and The imaging device includes an operation switch that issues a command to drive a focus control circuit and the mosaic control circuit substantially simultaneously.

Further, the present invention provides an imaging device that includes a detection circuit that detects a lens position of an optical system and a mosaic control circuit that performs mosaic processing on an image signal obtained by imaging, and that drives the mosaic control circuit with an output from the detection circuit. It is.

The present invention also provides a focus control circuit that controls focus in and focus out of an optical system, a detection circuit that detects a lens position of the optical system, a mosaic control circuit that performs mosaic processing on an image signal obtained by imaging, and a mosaic control circuit that performs mosaic processing on an image signal obtained by imaging, and The imaging device is equipped with a control circuit and an operation switch that gives commands to sequentially drive the mosaic control circuit.

Function: With this configuration, a focus-in/focus-out effect can be obtained in which image blurring by the optical system and image mosaic processing by the mosaic control circuit are linked.

EXAMPLES Hereinafter, examples of the first invention will be described with reference to the drawings.

In FIG. 1, 11 is a photographing lens, 12 is a focus control circuit that controls focus-in and focus-out of the optical system, 13 is a signal processing circuit that performs signal processing of a subject image captured by the photographic lens 11, and 14 is a signal processing circuit. A mosaic control circuit takes an output of the processing circuit 13, that is, an image signal obtained by imaging as an input image signal, and controls mosaic processing of the input image signal; 15 is an operation switch;
6 is a signal recording system for recording image signals.

Regarding the imaging device of this embodiment configured as described above,
The operation will be explained below.

The focus control circuit 12 and the mosaic control circuit 14 start operating in response to a command from the operation switch 15.

In the case of focus out, the focus control circuit 12 drives the optical system to gradually remove the focus, and at the same time, the mosaic control circuit 14 gradually mosaics the input image signal from small cells to large cells to create a subject image. Blur completely.

In the case of focus-in, the focus control circuit 12 first drives the optical system to remove the focus to the maximum, and
After the mosaic control circuit 14 has mosaic-processed the input image signal, the focus control circuit 12 gradually focuses the optical system, and at the same time, the mosaic control circuit 14 gradually reduces the size of the mosaic cells and finally creates a mosaic. Minimize the number of cells and focus the optical system to obtain a clear image of the subject. The input image signal processed as described above is then recorded in the signal recording system 16.

As described above, according to this embodiment, by driving the focus control circuit 12 and the mosaic control circuit 14 almost simultaneously based on the command from the operation switch 15, complete It is possible to achieve focus-in and focus-out with blurred images,
The visual effect of focus-in and focus-out can be enhanced.

Next, an embodiment of the second invention will be described with reference to the drawings.

In FIG. 2, 21 is a photographing lens, 23 is a signal processing circuit that performs signal processing of the subject image captured by the photographic lens 21, 24 is a mosaic control circuit that controls mosaic processing of input image signals, and 26 is a mosaic control circuit that controls image signals. A signal recording system 27 is a detection circuit for detecting the lens position of the optical system.

The operation of the image processing apparatus of this embodiment configured as described above will be described below.

When the user manually defocuses the optical system to perform focus-out, the detection circuit 27 detects the position of the lens 21 of the optical system and outputs a detection signal when the lens position reaches an end point. . When the mosaic control circuit 24 receives the detection signal, it performs mosaic processing on the input image signal from the smallest cell to the largest cell, completely blurring the subject image.

As described above, according to this embodiment, by detecting the end point of the lens position of the optical system and subsequently performing mosaic processing on the input image signal, a completely blurred image that could not be obtained with the conventional technology using only the optical system can be achieved. Therefore, it is possible to achieve focus-out, and to improve the visual effect of focus-out.

In the case of this embodiment, there is a risk that the user may cause a malfunction by moving the focus of the optical system not to focus out, but simply to manually adjust the focus and bring the lens to the end point. In this case, a switch is provided that can turn on and off the operation of the mosaic control circuit 24, and if this switch is off, the mosaic control circuit 24 will not operate even if the lens of the optical system reaches the end point. All you have to do is take the following measures.

In FIG. 3, 31 is a photographing lens, 32 is a focus control circuit that controls focus-in and focus-out of the optical system, 33 is a signal processing circuit that performs signal processing of a subject image captured by the photographic lens 31, and 34 is an input image. Mosaic control circuit for controlling signal mosaic processing, 3
5 is an operation switch, 36 is a signal recording system for recording image signals, and 37 is a detection circuit for detecting the lens position of the optical system.

The operation of the image processing apparatus of this embodiment configured as described above will be described below.

When receiving a focus-out command from the operation switch 35, the focus control circuit 32 drives the optical system to gradually remove the focus. At this time, the detection circuit 37 detects the lens position of the optical system, and outputs a detection signal when the lens position reaches the end point. When the mosaic control circuit 34 receives the detection signal, it performs mosaic processing on the input image signal from the smallest cell to the largest cell, completely blurring the subject image.

Further, when a focus-in command is received from the operation switch 35, the focus control circuit 32 drives the optical system to remove the focus to the maximum, and the mosaic control circuit 34 first mosaics the input image signal from the mosaic state. The control circuit 34 is driven to gradually reduce the size of the cell, and from the time when the cell becomes the minimum, the focus control circuit 32 drives the optical system to focus.

The input image signal processed as described above is then recorded in the signal recording system 36.

In the explanation of the third embodiment above, it was described that the mosaic processing operation is controlled by the output signal from the lens position detection means of the optical system, but it is not necessary to limit it to this embodiment, and the video signal A similar effect can be obtained by detecting the degree of blur and performing mosaic processing when the blur exceeds a certain reference value.

As described above, according to the present embodiment, by sequentially driving the focus control circuit and the mosaic control circuit in response to commands from the operation switch, in the case of foot-cushout, the blurring effect of the photographed image by the optical system is suppressed. Subsequently, the image processing-like image blurring effect by mosaic processing is applied sequentially, and in the case of focus-in, the image processing-like image blurring effect is performed by mosaic processing, followed by the blurring effect of the captured image by the optical system. The visual effect of focus-in and focus-out can be improved successively.

Note that in the above embodiment, the description of the focusing operation is omitted. Autofocus methods in imaging devices include, for example, a method of detecting high frequency components of an image signal, an infrared distance measuring method, and the like. The present invention can apply any of these autofocus methods.

Also, in the above explanation, the operation switch is written as if it were an independent switch for instructing focus-in and focus-out, but it does not have to be an independent switch, and may be used in combination with other switches. It is clear that software switching means such as a microcomputer may also be used.

Further, in the above description, the focus control and the mosaic processing control are combined, but it is clear that a white fade and a black fade can be achieved by combining this with control of the aperture of the optical system.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention includes a focus control circuit that controls focus-in and focus-out of an optical system when performing focus-in and focus-out in an imaging device, and a mosaic process for an input image signal. By driving the mosaic control circuits substantially simultaneously, the visual effect of focus-in and focus-out can be enhanced, and the practical effects thereof are great.

In addition, when manually defocusing the optical system in an imaging device, the end point of the lens of the optical system is detected, and after the image is blurred by the optical system, the input image signal is subsequently mosaic processed by the mosaic control circuit. By doing so, it is possible to successively obtain the blurring effect of the photographed image by the optical system and the image processing-like blurring effect of the image processing by the subsequent mosaic processing, and it is possible to enhance the visual effect by focusing. Its practical effects are great.

Also, when performing focus-in and focus-out in an imaging device, focus-in of the optical system is performed.

By sequentially driving the focus control circuit that controls focus out and the mosaic control circuit that mosaics the input image signal, the optical system produces a blurring effect on the photographed image, and the subsequent mosaic processing produces an image processing-like blurring effect. are obtained in sequence, focus in,
The visual effect of focus-out can be enhanced, and its practical effects are great.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an imaging device showing the configuration of an embodiment of the present invention, FIGS. 2 and 3 are block diagrams of an imaging device showing the configuration of another embodiment of the invention, and FIG. 4 is a block diagram of a conventional imaging device. FIG. 2 is a block diagram showing the configuration of an imaging device. 11.21.31... Photography lens, 12.32.
...Focus control circuit, 13,23.33...
Signal processing circuit, 14.24.34...Mosaic control circuit, 15.35...Operation switch, 16
, 26.36...Signal recording system, 27.37...
detection circuit.

Claims (7)

[Claims] (1) A focus control circuit that controls focus-in and focus-out of the optical system, a mosaic control circuit that performs mosaic processing on image signals obtained by imaging, and instructions that drive the focus control circuit and the mosaic control circuit substantially simultaneously. An imaging device equipped with an operation switch that provides (2) An imaging device comprising: a detection circuit that detects the position of a lens in an optical system; and a mosaic control circuit that performs mosaic processing on an image signal obtained by imaging, the mosaic control circuit being driven by an output from the detection circuit. (3) When performing the focus-out operation, the detection circuit detects the lens end of the optical system, and in response to the output thereof, the mosaic control circuit mosaics the image signal from small cells to sequentially large cells. imaging device. (4) A detection circuit that detects the lens position of the optical system, a mosaic control circuit that performs mosaic processing on the image signal obtained by imaging, a focus control circuit that controls focus-in and focus-out of the optical system, and this focus control and an operation switch that gives a command to drive the mosaic control circuit based on the output of the detection circuit after driving the circuit. (5) When performing a focus-out operation, the focus control circuit gradually defocuses the optical system, the detection circuit detects the position of the lens, and outputs a detection signal when the lens position reaches the end point, and performs mosaic control. 5. The imaging apparatus according to claim 4, wherein a circuit receives the output of the detection circuit and mosaics the image signal from small cells to sequentially large cells. (6) A focus control circuit that controls focus-in and focus-out of the optical system, a mosaic control circuit that performs mosaic processing on image signals obtained by imaging, and after driving the mosaic control circuit, drives the focus control circuit. An imaging device equipped with an operation switch that gives a command to (7) When performing a focus-in operation, the focus control circuit removes the focus of the optical system to the maximum, and the mosaic control circuit maximizes the cells of the mosaic. From this state, the mosaic control circuit sequentially reduces the cells of the mosaic, and 7. The imaging device according to claim 6, wherein the focus control circuit focuses the optical system at the time when the value becomes a minimum.