119results about How to "Superfluous image" patented technology

Described herein are catheters for use with Optical Coherence Tomography (OCT) that include an optical fiber core having a first refractive index and an interface medium having a second refractive index, where the first and second refractive indexes are mismatched such that receiving electronics configured to receive optical radiation reflected from the reference interface and the target operate in a total noise range that is within 5 dB of the shot noise limit. These OCT catheters may include a silicon die mirror having a reflective coating that is embedded in the interface medium. The optical fiber can be fixed at just the distal end of the catheter, and may be managed within a handle that is attached to the proximal end of the catheter body, and is configured to allow rotation of the both catheter body and the optical fiber relative to the handle.

An image display device 100 includes: a display unit 10 having an image screen 11 for displaying a two-dimensional image; an image transfer panel 20 located on a path of light left from the image screen 11; a floating image display unit 1 that displays, as a floating image, the light left from the image screen 11 in a space located on one side of the image transfer panel 20 opposite to the other side thereof facing the display unit 10; a direct-view image display unit 2 provided with a display unit 40 having an image screen 41 for displaying a two-dimensional image displayed on the image screen 41 as a direct view image. The image display device carries out:floating-image control that displays the floating image P2 such that the given object displayed as the floating image P2 is shifted in a specified first direction from the displayed position of the floating image P2 to the image screen 41; anddirect-view image control that executes a process associated with the given object during or after the shift of the given object, and displays, on the image screen 41, a two-dimensional image on which the executed process is reflected.

Various implementations of the invention provide techniques and supporting systems that facilitate real-time or near-real-time ultrasound tracking for the purpose of calculating changes in anatomical features during a medical procedure. More specifically, anatomical features within a patient undergoing a medical procedure are tracked by obtaining temporally-distinct three dimensional ultrasound images that include the feature of interest and obtaining a targeted subset of ultrasound images focused on the feature. Based on the targeted subset of ultrasound images, a displacement of the feature is determined and image parameters used to obtain the targeted subset of ultrasound images are adjusted based on the displacement. This results in a time-based sequence of three dimensional images and targeted ultrasound images of the feature that identify changes in the position, size, location, and / or shape of the feature.

The present technique provides a variety of processing schemes for decomposing soft tissue and bone images more accurately from low and high-energy images acquired from an imaging system, such as a dual-energy digital radiography system using flat-panel technology. In particular, a parameter selection process is provided for automatically computing the decomposition parameters WS and WB to create soft tissue and bone images, respectively. The parameter selection process modifies a default decomposition parameter based on a variety of image and technique variables, such as intensity levels of the low and high-energy images, the patient size, and the collimator filtration setting. The parameter selection process avoids robustness problems associated with image-based algorithms, and the process may operate without any direct user interaction.

An auxiliary endoscopic imaging catheter is configured for insertion via a longitudinal working channel of an endoscopic. The endoscopic imaging catheter comprises a longitudinally extending tubular shaft having a proximal end, a distal end, and outer surface, and a longitudinal axis; one or more transparent or translucent elements positioned in the outer surface of the distal end of the shaft; and an imaging system comprising a reflector / refractor element and an imaging sensor, the imaging system being positioned interior of the distal end of the shaft. The reflector / refractor can be rotated or wobbled to obtain images of up to or over 360°. An illumination system is positioned on or in the distal end of the shaft, the illumination system being capable of illuminating a corporeal lumen or organ adjacent to the distal end.

A computer program product includes instructions for a processor to perform a method of improving image structure and coherence, and / or for simplification / stylization. The method includes inputting the image, by: scanning the image; image capture using a camera; and / or image creation using a computer. Multi-channel images are converted into a single-channel grayscale image, which is separated into a first image component—the high spatial frequencies, and a second component image—the low spatial frequencies. The first and second component images are each formed by filtering to remove frequencies outside of respective upper and lower threshold frequencies. A gain multiplier is applied to the filtered first and second component images to control detail amplification. The first and second component images are each blurred at the respective upper and lower threshold frequencies. An improved stylized composite image results by subtracting the gain multiplied first component image from the gain multiplied second component image.