Canon Kabushiki Kaisha

Fumihito Wachi

Hiroki Nakayama

Akihisa Horiuchi

Hitoshi Mukaiya

Yasunori Murata

Kenichi Kimura

Hiroto Yasui

Hidemi Takayama

An image processing apparatus selects filter information for image stabilization processing used in image capturing from a storage medium storing a plurality of pieces of filter information for a plurality of types of image stabilization processing, performs a predetermined operation based on the selected filter information to create a correction filter for use in correcting a captured image, and corrects the captured image using the created correction filter.

Apparatus and method for image processing and storage medium for processing captured images

An image processing circuit obtains filter information individually corresponding to two or more types of image stabilization processing used in shooting and performs predetermined computational processing based on the filter information individually corresponding to the two or more types of image stabilization processing to create a correction filter for use in correcting a captured image. Then, the image processing circuit performs correction processing using the created correction filter on the captured image captured using the two or more types of image stabilization processing.

Apparatus, method, and program for image processing

An image processing apparatus includes an image acquiring unit configured to acquire an input image generated by image capturing, a specifying unit configured to specify a first area in which unnecessary light contained in the input image is detected, a processing unit configured to perform, for the input image, a reducing process configured to reduce the first area specified by the specifying unit, and a providing unit configured to display the first area on a display unit, specified by the specifying unit in the input image, so that the first area can be recognized in the input image.

Image processing apparatus, image capturing apparatus, and storage medium for storing image processing program

An image processing apparatus includes a memory configured to store a plurality of image restoration filters depending on an F-number, and at least one processor coupled to the memory, and serving as an acquirer configured to acquire a plurality of first image restoration filters according to an imaging condition from among the plurality of image restoration filters, and an image restorer configured to perform a restoration process for an image through a predetermined calculation process based on the plurality of first image restoration filters. The image is obtained via an imaging optical system that includes an optical element having a transmittance distribution where a transmittance continuously changes in at least a partial area.

Image processing apparatus, imaging apparatus, image processing method, and storage medium for performing a restoration process for an image

An image processing apparatus includes an image acquirer configured to acquire an input image generated by an image pickup apparatus that controls exposure of an image sensor with a light flux from an image pickup optical system using a shutter, and a processor configured to perform image restoration processing for the input image using an image restoration filter generated based on an optical transmission function from the image pickup optical system to the image sensor in the exposure. When one of a front curtain and a back curtain in the shutter is an electronic curtain and the other is a mechanical curtain, the processor uses, for the image restoration filter, a first image restoration filter generated based on the optical transmission function in a state where the mechanical curtain partially shields the light flux from the image pickup optical system to the image sensor.

Image processing apparatus, image pickup apparatus, and storage medium for storing image processing program

A zoom lens system which allows a reduction in size. This zoom lens makes two points at different distances have an optically conjugate relationship, and sequentially includes, from a first conjugate point side at a longer distance to a second conjugate point side at a shorter distance, a first lens unit having a negative optical power, a second lens unit, a third lens unit, a fourth lens unit, a fifth lens unit, and a sixth lens unit. A plurality of lens units of the first to sixth lens units move for zooming, and at least one lens unit of the first to sixth lens units has a diffractive optical element.

Zoom lens system and projection apparatus using the same

A zoom lens, includes, in order from an object side to an image side, a first lens unit of negative refractive power, the first lens unit having an aspherical lens of negative refractive power, a stop, a second lens unit of positive refractive power, the second lens unit having an aspherical lens of positive refractive power, and a third lens unit of positive refractive power, wherein, during zooming from a wide-angle end to a telephoto end, the second lens unit and the stop move in unison toward the object side, and the first lens unit so moves as to compensate for a shift of an image plane resulting from the zooming.

Zoom lens and photographic apparatus having the same

A lens drive control device includes a zoom lens, a drive mechanism for driving at least one lens unit which constitutes the zoom lens, a control circuit for controlling the drive mechanism, and a switch for switching between a shooting state and a non-shooting state of the zoom lens, wherein, when the zoom lens is switched from the non-shooting state to the shooting state by the switch, the control circuit causes the drive mechanism to drive the zoom lens to a zoom position other than a wide-angle end.

Lens drive control device and image pickup apparatus having the same

A zoom lens of the retrofocus type includes, in order from a longer-distance conjugate point side to a shorter-distance conjugate point side, a front lens unit of negative refractive power, and a rear lens unit of positive refractive power, wherein a separation between the front lens unit and the rear lens unit varies according to variation of magnification, and at least one of the front lens unit and the rear lens unit is provided with a diffractive optical element.

Zoom lens of retrofocus type

A zoom lens includes, from front to rear, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power and a fourth lens unit having a positive refractive power, at least the second and fourth lens units being moved to effect zooming, wherein the maximum image angle is increased while the diameter of the first lens unit is extremely reduced.

Zoom lens

A zoom lens of the rear focus type including, from an object side to an image side, a first lens unit of positive refractive power, a second lens unit of negative refractive power, a third lens unit of positive refractive power having a stop, and a fourth lens unit of positive refractive power. During zooming from a wide-angle end to a telephoto end, the second lens unit is moved toward the image side, the third lens unit and the stop are moved in unison in a locus convex toward the object side, and the fourth lens unit is moved in a locus convex toward the object side. During focusing, the fourth lens unit is moved, and the following condition is satisfied: -0.3&lt;M3max/.phi..sub.1 &lt;-0.04, where M3max is a maximum value of an amount of axial movement of the third lens unit and the stop from the wide-angle end (a moving direction to the object side being taken as '-'), and .phi..sub.1 is the outer diameter of a frontmost lens of the zoom lens.

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Tokyo, Japan

Fumihito Wachi