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Image taking apparatus

A technology for obtaining devices and images, applied in image communication, TV, color TV parts, etc.

Inactive Publication Date: 2012-07-04
SANYO ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] Therefore, when the optimal exposure time Tc is less than 1 / f second, even if the user of the conventional image acquisition device shakes his hand during the optimal exposure time Tc When the probability is high, the conventional image acquisition device cannot perform multiple exposure photography, so hand shake cannot be prevented
[0022] Moreover, in the above-mentioned image acquisition device, since the frame period is not considered in the multiple exposure photography, when the time T1 for capturing one image is shorter than the frame period In this case, the overall shooting time To becomes longer, and there is a problem that hand shake cannot be prevented.

Method used

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Embodiment Construction

[0048] (Structure of the image acquisition device according to the present embodiment)

[0049] refer to Figure 4 ~ Figure 6 , the configuration of the image acquisition device according to this embodiment will be described.

[0050] like Figure 4 As shown, the image acquisition device 100 includes: a lens 110, an aperture 120, an imaging mechanism 130, an imaging control unit 140, an image processing unit 150, and a motion detection / synthesis unit 160 for performing multiple exposure photography and single image photography.

[0051] Here, the so-called subject image may be either a photoelectrically converted image or a captured image.

[0052] The photoelectric conversion image refers to an image generated by photoelectric conversion by the imaging mechanism 130 exposed through the lens 110 and the aperture 120 to accumulate charges, and read out the accumulated charges.

[0053] In addition, a captured image refers to an image obtained by performing predetermined proc...

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Abstract

The invention provides an image taking apparatus comprising: a exposure time calculator, a predetermined time calculator, a shooting mode determining unit, a motion detector, and a predetermined coefficient calculator. The exposure time calculator calculates exposure time of image sensor based on an aperture value corresponding to a diaphragm and brightness of an object. The predetermined time calculator calculates predetermined time based on a focal length of a lens and a predetermined coefficient. The shooting mode determining unit determines execution of multiple-exposure shooting to obtain a composite image of the object by obtaining multiple object images and then combining the multiple object images in a case where the exposure time is equal to or longer than the predetermined time.The motion detector detects motion among the multiple object images in the multiple-exposure shooting. The predetermined coefficient calculator updates a predetermined coefficient based on the detected amount of motion.

Description

technical field [0001] The present invention relates to an image acquisition device and program for acquiring a subject image and performing multiple exposure photography using the subject image. Background technique [0002] Conventionally, in an image acquisition device as a digital still camera, in order to prevent hand shake during shooting, a method of increasing the shutter speed, that is, shortening the exposure time of the imaging mechanism is known. Specifically, in order to prevent camera shake during photography, when the focal length f of the lens is set to f mm, the exposure time is preferably 1 / f second or less. [0003] Furthermore, in this image acquisition device, in order to photograph a subject in an appropriate exposure state, as figure 1 As shown in (a), when the brightness of the subject is high, control is performed to close the aperture and shorten the exposure time; when the brightness of the subject is low, control is performed to open the apertu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
CPCH04N5/23248H04N5/243H04N5/23254H04N5/2327H04N5/235H04N23/68H04N23/6811H04N23/684H04N23/70H04N23/76
Inventor 富永隆一郎森幸夫冈田诚司滨本安八横畠正大
Owner SANYO ELECTRIC CO LTD
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