Sony Corporation

Shinya Ishibashi

Jun Minakuti

Takahiro Koyama

Shigeru Tsujita

Masaomi Moritsu

Nobuyuki Sato

Mitsuaki Kita

Masashi Wakatsuki

Toshihisa Maeda

An image capturing apparatus including: an image sensor generating an image signal; a photographing control section performing a photographing operation in which an exposure of the image sensor is divided into a plurality of exposures in accordance with a predetermined exposure time; an addition section adding sequentially the image signals obtained at each exposure; an amplification ratio calculation section calculating an amplification ratio of the added image signal on the basis of the predetermined exposure time; an amplification section amplifying the added image signal by using the amplification ratio to compensate for insufficient exposure for the predetermined exposure time; and a display control section displaying information related to the amplified image signal; wherein the photographing control section ends the photographing operation when instructed by a user, and determines that the amplified image signal is a captured image obtained by performing the photographing operation with the predetermined exposure time.

Image capturing apparatus and control method thereof using amplification ratio based on current accumulated exposure time

An imaging apparatus includes: an imaging device generating an image signal on a subject image; a shooting control mechanism dividing an exposure to be made to the imaging device in an exposure period into a plurality of times of exposures; an adding mechanism adding individual image signals obtained by the plurality of divided exposures in sequence to generate a sum image signal; an amplification control mechanism amplifying the sum image signal using a predetermined amplification factor in a first period in the exposure period to generate an amplified image signal; and a display control mechanism displaying, on a display section, the amplified image based on the amplified image signal in the first period, and displaying, on a display section, an image based on the sum image signal in a period other than the first period in the exposure period.

Imaging apparatus, control method thereof, and program

Imaging signal obtained through exposure for divided exposure times is A/D converted to digital imaging signal. Dark current component is subtracted from the digital imaging signal. The result of subtraction is accumulated and stored in a first memory. Next, exposure for divided exposure times is performed with the imaging device shielded from light. The obtained imaging signal is A/D converted to digital imaging signal. Dark current component is subtracted from the digital imaging signal. The result of subtraction is accumulated and stored sequentially in a second memory. The digital imaging signal stored in the second memory is subtracted from the digital imaging signal stored in the first memory. Then the result of subtraction is output. The word length allocated to one pixel in the first and second memories is longer than the word length of one A/D converted pixel.

Imaging apparatus, imaging control method, and imaging control program

Imaging apparatus

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Osaka, Japan

Shinya Ishibashi