JP2004350146A - Image processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processor capable of easily confirming focus or an image blur of each of reduced images. <P>SOLUTION: The image processor has a function by which a plurality of still images acquired in continuous mode with an imaging device are reduced to generate a plurality of reduced images which are composited into a single still image, providing an image file for a single still image, and a plurality of reduced images are cut out one by one from the image file for a still image, which are displayed on a monitor in photographing sequence in continuous mode. The image processor also has a function for displaying by magnifying a part of the image displayed on the monitor (CPU (central processing unit) 121 is a function realizing means). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is obtained by reducing a plurality of still images obtained by continuous shooting with an imaging device to create a plurality of reduced images, and combining the plurality of reduced images into a single still image. The present invention relates to an image processing apparatus having a function of receiving a single still image file, cutting out a plurality of reduced images one by one from the still image file, and displaying the cut images on a monitor in the shooting order during the continuous shooting.
[0002]
[Prior art]
As a conventional technique related to a digital camera equipped with an image processing device having the above functions, the maximum number of frames that can be continuously shot is input, and the first compression is performed so as to be a reciprocal of the input number and recorded in an area. Later, there is a digital electronic still camera that records on a recording medium by the second compression, and a control method therefor (see Patent Document 1).
There is also an image processing apparatus that receives a file in which a plurality of reduced images are combined into a single still image, cuts out the reduced images one by one, and displays the reduced images on a monitor in the shooting order during continuous shooting (see Patent Document 2). ).
[Patent Literature 1] Japanese Patent No. 2775542 [Patent Literature 2] Patent No. 3253538 [0003]
[Problems to be solved by the invention]
However, in a conventional image processing apparatus, a single still image is obtained by combining a plurality of reduced images created by reducing a plurality of still images obtained by continuous shooting with an imaging device into a single still image. By cutting out multiple reduced images one by one from image files and displaying them on the monitor in the order of shooting during continuous shooting, each reduced image could be viewed as a pseudo moving image, but focus and blur could be easily checked I couldn't.
SUMMARY OF THE INVENTION It is an object of the present invention to provide an image processing apparatus capable of easily checking the focus and blur of each reduced image.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 reduces a plurality of still images obtained by continuous shooting with an imaging device to create a plurality of reduced images, and creates a plurality of reduced images. Receiving a single still image file obtained by synthesizing a single still image, cutting out a plurality of reduced images one by one from the still image file and displaying them on the monitor in the order of shooting during continuous shooting The most important feature of the image processing apparatus having the function of causing the image processing apparatus to have a function of enlarging and displaying a part of the image displayed on the monitor.
According to a second aspect of the present invention, in the image processing apparatus according to the first aspect, when an operation of displaying a next or previous image is performed while a part of an image displayed on a monitor is enlarged and displayed, the next or previous image is displayed. The main feature of the image processing apparatus is that the image has a function of enlarging and displaying an image at an enlarged position and an enlarging ratio before the operation.
A third aspect of the present invention is characterized in that, in the image processing apparatus according to the first aspect, the enlarged image is one of images obtained by equally dividing an image displayed on a monitor.
According to a fourth aspect of the present invention, there is provided the image processing apparatus according to the second aspect, wherein an operation of displaying a next or previous image and an operation of selecting an enlargement position are performed using keys arranged in a cross shape. Features.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a configuration diagram of a digital camera to which an autofocus device according to an embodiment of the present invention is applied. In FIG. 1, reference numeral 100 denotes a digital camera. The digital camera 100 includes a lens system 101, a mechanical mechanism 102 including an aperture / filter unit, a CCD 103, a CDS circuit 104, a variable gain amplifier (AGC amplifier) 105, an A / A D converter 106, IPP 107, DCT 108, coder 109, MCC 110, DRAM 111, PC card interface 112, CPU 121, display unit 122, operation unit 123, SG (control signal generation) unit 126, strobe device 127, battery 128, DC-DC It comprises a converter 129, an EEPROM 130, a focus driver 131, a pulse motor 132, a zoom driver 133, a pulse motor 134, and a motor driver 135. A detachable PC card 150 is connected via the PC card interface 112.
The lens unit includes a mechanical system 102 including a lens system 101, a diaphragm and a filter unit, and the mechanical shutter of the mechanical system 102 performs simultaneous exposure of two fields. The lens system 101 is formed of, for example, a varifocal lens, and includes a focus lens system 101a and a zoom lens system 101b.
The focus driver 131 drives the pulse motor 132 in accordance with the control signal supplied from the CPU 121 to move the focus lens system 101a in the optical axis direction. The zoom driver 133 drives the pulse motor 134 in accordance with a control signal supplied from the CPU 121 to move the zoom lens system 101b in the optical axis direction. Further, the motor driver 135 drives the mechanical mechanism 102 according to a control signal supplied from the CPU 121, and sets, for example, an aperture value of an aperture.
[0006]
The CCD (Charge Coupled Device) 103 converts an image input through the lens unit into an electric signal (analog image data). The CDS (correlated double sampling) circuit 104 is a circuit for reducing noise in the CCD type image pickup device.
The AGC amplifier 105 corrects the level of the signal that has been correlated double-sampled by the CDS circuit 104. Further, the A / D converter 106 converts analog image data input from the CCD 103 via the AGC amplifier 105 into digital image data. That is, the output signal of the CCD 103 is converted into a digital signal at the optimum sampling frequency (for example, an integer multiple of the subcarrier frequency of the NTSC signal) by the A / D converter 106 via the CDS circuit 104 and the AGC amplifier 105. Is done.
Also, an IPP (Image Pre-Processor) 107, a DCT (Discrete Cosine Transform) 108 and a coder (Huffman Encoder / Decoder) 109, which are digital signal processing units, convert digital image data input from the A / D converter 106 into digital image data. Various processing, correction, and data processing for image compression / decompression are performed separately for color difference (Cb, Cr) and luminance (Y). The image compression / decompression unit performs, for example, orthogonal transformation, which is a process of JPEG-compliant image compression / decompression, and Huffman encoding / decoding, which is a process of JPEG-compliant image compression / decompression.
Further, an MCC (Memory Card Controller) 110 temporarily stores the compressed image and records the image on the PC card 150 via the PC card interface 112 or reads the image from the PC card 150.
[0007]
The CPU 121 uses the RAM as a work area according to a program stored in the ROM, and controls all operations inside the digital camera according to an instruction from the operation unit 123 or an external operation instruction such as a remote controller (not shown). Specifically, the CPU 121 controls an imaging operation, an automatic exposure (AE) operation, an automatic white balance (AWB) adjustment operation, an AF operation, and the like.
The camera power is input to the DC-DC converter 129 from a battery 128, for example, NiCd, nickel metal hydride, lithium battery, or the like, and is supplied to the inside of the digital camera.
The display unit 122 is realized by an LCD, an LED, an EL, or the like, and displays photographed digital image data, decompressed recorded image data, and the like. The operation unit 123 includes buttons for externally performing function selection, shooting instructions, and other various settings. Adjustment data and the like used when the CPU 121 controls the operation of the digital camera are written in the EEPROM 130.
The above-described digital camera 100 (CPU 121) has a recording mode for recording image data obtained by imaging a subject on the PC card 150, a display mode for displaying image data recorded on the PC card 150, and the like. The AF sensor 140 implements an autofocus device.
FIG. 2 is a diagram showing a display example in which reduced images are arranged in a single image on a monitor (display unit 122), FIG. 3 is an enlarged view of a portion a of FIG. 2, and FIG. 4 is an enlarged view of FIG. 5 is an enlarged view of part b of FIG. 2, FIG. 6 is an enlarged view of a part of the enlarged view of FIG. 5, and FIG. 7 is an enlarged view of part a of FIG. FIG. 8 is a view showing a cross key of the operation unit, and FIG. 9 is an enlarged view of a portion b in FIG. Each embodiment will be described below with reference to these drawings.
(First embodiment)
When the shutter is pressed, the subject image signal is converted into digital image data by the CCD 103, the CDS circuit 104, the AGC amplifier 105, and the A / D converter 106, and various correction processes are performed by the IPP 107. , AF, and AWB processing are performed by the CPU 121 based on the signal from the IPP 107, and the subject image data is reduced and stored in the DRAM 111.
When the data is stored in the DRAM 111, it is stored as a part of a single still image. When the number of reduced images to be recorded as a single still image is stored in the DRAM 111 by repeating the above processing, the single still image data is converted into compressed image data by the DCT 108 and the coder 109 and stored in the MCC 110. The storage location of the compressed image data may be the DRAM 111. This compressed image data is recorded on the PC card 150.
Then, the recorded image is reproduced. When the image is reproduced, the reduced images are arranged and displayed in a single image on the monitor as shown in FIG. Then, for example, when the enlargement key is pressed, one of the reduced images is enlarged and displayed (FIG. 3). When one of the reduced images is displayed in an enlarged manner and the enlargement key is pressed, a part of the displayed image is enlarged and displayed as shown in FIG.
(Second embodiment)
When one of the reduced images is displayed in an enlarged manner (FIG. 3), when the next image display operation is performed, one enlarged display of the next reduced image is displayed (FIG. 5). When the next image display operation is performed in a state in which a part of FIG. 3 is enlarged and displayed (FIG. 4) by performing the enlargement operation, an image of the next image having the same enlargement position and enlargement ratio as in FIG. (FIG. 6).
[0009]
(Third embodiment)
When an enlargement operation is performed during the screen display in FIG. 7, one of nine equal parts of FIG. 7 is enlarged and displayed. For example, if the part a in FIG. 7 is enlarged, the display shown in FIG. 4 is obtained.
(Fourth embodiment)
When a part of the reduced image is enlarged and displayed as shown in FIG. 4, when the up / down key 200 shown in FIG. 8 is pressed, the next image or the previous image is displayed. (FIG. 4), an enlarged display (FIG. 6) of part b in FIG. 2 is obtained by operating the down key.
When a part of the reduced image is enlarged and displayed as shown in FIG. 4, when the left / right key 201 shown in FIG. 8 is pressed, the next enlarged position is enlarged and displayed (at the time of enlarged display of the part a in FIG. (FIG. 4), an enlarged display of part b in FIG. 7 (FIG. 9) by right key operation). The operation with the up / down key and the operation with the left / right key may be reversed.
[0010]
【The invention's effect】
As described above, in the image processing apparatus according to the first aspect, a plurality of reduced images created by reducing a plurality of still images obtained by continuous shooting with the imaging device are converted into a single still image. When a single still image file obtained by synthesis is received, a plurality of reduced images are cut out one by one from the still image file, and displayed on a monitor in the shooting order during continuous shooting. Is displayed in an enlarged scale, so that focus and blur can be easily confirmed.
In the image processing apparatus according to the second aspect, when the next or previous image is displayed during the enlarged display, the enlarged image is displayed at the same position and at the same magnification as the previously enlarged image. Therefore, the enlarged display can be performed in a short time without performing the enlargement operation again, so that the enlarged display can be easily confirmed, and the time until the enlargement can be shortened, so that the power consumption can be reduced.
In the image processing device according to the third aspect, since the enlarged image is one of the images obtained by equally dividing the image displayed on the monitor, the entire enlarged image can be confirmed with a small number of operations.
In the image processing device according to the fourth aspect, since the operation of displaying the next or previous image and the operation of selecting the enlargement position are performed using the keys arranged in a cross shape, there is no need to provide a special key, and the operability is improved. Is also excellent.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a digital camera to which an autofocus device according to an embodiment of the present invention is applied.
FIG. 2 is a view showing a display example in which reduced images are arranged in a single image on a monitor.
FIG. 3 is an enlarged view of a portion a in FIG. 2;
FIG. 4 is an enlarged view of a part of the enlarged view shown in FIG. 3;
FIG. 5 is an enlarged view of a portion b in FIG. 2;
FIG. 6 is an enlarged view of a part of the enlarged view shown in FIG. 5;
FIG. 7 is a view showing a state in which a part of FIG. 2 is enlarged and divided into nine equal parts.
FIG. 8 is a diagram illustrating a cross key of the operation unit.
FIG. 9 is an enlarged view of a portion b in FIG. 7;
[Explanation of symbols]
121 CPU (function realizing means)

Claims (4)

A plurality of reduced images are created by respectively reducing a plurality of still images obtained by continuous shooting with the imaging device, and a single still image obtained by combining the plurality of reduced images into a single still image An image processing apparatus having a function of receiving a picture image file, cutting out a plurality of reduced images one by one from the still picture image file, and displaying the cutout pictures on the monitor in the shooting order during the continuous shooting. An image processing device having a function of enlarging and displaying a part of the image. 2. The image processing apparatus according to claim 1, wherein, when a part of the image displayed on the monitor is enlarged and displayed, when an operation for displaying the next or previous image is performed, the next or previous image is also enlarged before the operation. An image processing apparatus having a function of displaying an enlarged image at a position and an enlargement ratio. 2. The image processing apparatus according to claim 1, wherein the enlarged image is one of equally divided images of an image displayed on a monitor. 3. The image processing apparatus according to claim 2, wherein the operation of displaying the next or previous image and the operation of selecting an enlargement position are performed using keys arranged in a cross shape.

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