Olympus Corporation

Kazuhito Nemoto

Takeo Usui

An ultrasound imaging system includes a processor configured to: generate, based on an ultrasound signal acquired through ultrasound transmission and reception to and from an observation target by an ultrasound transducer, plural ultrasound images chronologically; calculate a correlation value in each of ultrasound images that are chronologically consecutive, for each of plural areas set in each of the ultrasound images; calculate contrasts based on correlation values calculated for the plural areas; calculate a spatial distribution of the contrasts in each of the ultrasound images; and select an ultrasound image based on the contrasts and the spatial distribution of the contrasts.

Ultrasound imaging system, operation method of ultrasound imaging system, and computer-readable recording medium

An imaging device includes an image acquisition unit that acquires an original image in which pixels with different exposure periods coexist; a corrected-image generating unit that generates corrected images individually for a plurality of pixel groups formed by classifying the pixels according to the exposure periods, the corrected images being generated by interpolating pixel values and executing exposure correction; and an HDR combining unit that combines the corrected images, wherein, in a case where the difference between the pixel value of a pixel belonging to one of the pixel groups, acquired by exposure, and the pixel value of a pixel belonging to another one of the pixel groups, generated by interpolation at the same position as the aforementioned pixel, is greater than a predetermined threshold, the HDR combining unit increases the combining ratio of the pixel in the corrected image belonging to the one of the pixel group.

Imaging device which generates a high-dynamic-range image using an imaging element in which pixel groups are controlled to have different exposure periods

An image acquisition apparatus includes: an image acquisition device that includes normal image-acquisition pixels and a phase-difference detection pixel; a shift unit that shifts the image acquisition device; a phase-difference-pixel correcting unit that corrects a pixel value obtained by the phase-difference detection pixel to a value equivalent to values obtained by the normal image-acquisition pixels; a pixel storage unit that arranges and stores the pixel values after the correction at storage areas; and a high-resolution-image compositing unit that composites the stored pixel values to generate a high-resolution image. The shift unit shifts the image acquisition device such that pixel values that correspond to a specific color and that include the pixel value of a normal image-acquisition pixel exist at the same pixel position as the phase-difference detection pixel in the high-resolution image. The high-resolution-image compositing unit composites the pixel values corresponding to the specific color at a predetermined compositing ratio.

Image acquisition apparatus, image obtaining method, image obtaining program, and storage medium

Provided is a heart treatment device () including a heartbeat detecting unit () that detects heartbeats by using an electrode disposed at a heart (A), a pulse transformer () having a primary winding () and a secondary winding (), the heartbeat detecting unit () being disposed on the side of the primary winding () and the secondary winding () being connected to the vagus nerve (B), and a pulse generating unit () that supplies an electric pulse to the primary winding () of the pulse transformer () on the basis of the heartbeats detected by the heartbeat detecting unit (), the electric pulse having a pulse width not exceeding the voltage-time product of the pulse transformer ().

Growing community of inventors

Tokyo, Japan

Kazuhito Nemoto