67results about How to "Contrast" patented technology

The present invention is directed to a computer aided design method for producing an implant for a patient prior to operation comprising the steps of: generating data with a non-invasive 3D (3-dimensional) scan of the patient's defect site that digitally represents the area that will receive the implant; designing and validating an implant on a computer based on digital data generated from a volume image of the patient; and fabricating the implant based solely on the implant design data generated on computer.

The present invention is directed to a computer aided design method for producing an implant for a patient prior to operation comprising the steps of: generating data with a non-invasive 3D (3-dimensional) scan of the patient's defect site that digitally represents the area that will receive the implant; designing and validating an implant on a computer based on digital data generated from a volume image of the patient; and fabricating the implant based solely on the implant design data generated on computer.

Disclosed is a color volume mapping method. A broadcast signal transmission method according to an embodiment of the present invention may comprise the steps of: encoding video data and metadata for the video data; generating a broadcast signal including the encoded video data and metadata; and transmitting the generated broadcast signal.

Disclosed are articles having a color shifting film and indicia located behind the color shifting film. The indicia include at least a first and second colored portion, the first portion including a first fluorescent colorant. The second colored portion is non-fluorescent but has a color similar to that of the first portion to enhance concealment of the indicia under certain viewing conditions. At least one of the colored portions is patterned.

Disclosed herein are agents for enhancing the contrast in an ultrasound image. These agents are extremely small bubbles, or “microbubbles,” comprised of specially selected gases. The microbubbles described herein exhibit long life spans in solution and may be produced at a size small enough to traverse the lungs, thus enabling improved ultrasound imaging of the cardiovascular system and other vital organs. Also disclosed herein is a method for selecting gases from which contrast agents may be produced. The method is based on calculations using inherent physical properties of gases and describes a means to associate the properties of a gas with the time for dissolution of microbubbles comprised of the gas.

A plastic product such an animal ear tag (1) is laser marked with indicia (2). The contrast between the indicia (2) and the surrounding surface of the tag (1) is enhanced by the heated of the indicia following laser marking to a temperature at which the indicia and the surrounding surface have melted. In the preferred embodiment the indicia (2) is provided as a raised surface (3) and with a plurality of spaced apart peaks (4) with gaps (6) therebetween. The heating of the tag (1) is preferably by the application of a hot plate to the indicia surface of the tag and simultaneaouly or subsequently to the non-indicia surface of the tag.

The present invention provides an optical system and method that substantially eliminates or reduces disadvantages and problems associated with previously developed optical visual display systems and methods used for displaying critical visual symbology or rastered imagery in high ambient brightness environments.

The present invention provides a lighting apparatus which improves identification of living body tissues, and is suitable for medical lighting. In the lighting apparatus, the light output in a range of wavelength 525 to 590 nm is not greater than ⅕ of the light output in a range of wavelength 380 to 780 nm corresponding to visible light components. The peak wavelength of a blue or bluish green light component included in the output light is in a range 430 to 520 nm, and the peak wavelength of a red light component is not less than 600 nm. A green light component has the peak in a range of wavelength 520 to 590 nm, its spectral half-value width is not greater than 70 nm, and the light amount of at least the green light component can be independently adjusted.

The technology herein provides a dark blood delayed enhancement technique that improves the visualization of subendocardial infarcts that may otherwise be disguised by the bright blood pool. The timed combination of a slice-selective and a non-selective preparation improves the infarct / blood contrast by decoupling their relaxation curves thereby nulling both the blood and the non-infarcted myocardium. This causes the infarct to be imaged bright and the blood and non-infarct to both be imaged dark. The slice-selective preparation occurs early enough in the cardiac cycle so that fresh blood can enter the imaged slice.

A method for typographic design of a printed document utilizing typographical parameters designed by an expert typographer is provided. A standard body of text is executed in a standard font and a selected format by an expert design typographer to provide maximized readability of the standard body of text and to determine a set of reference parameters associated with that selected format. Utilizing the reference parameters in a computer program, an unskilled user may then execute a desired body of text in a desired font in the selected format to produce a printed document having substantially equal readability. The program allows a reader to switch between typefaces to produce printed documents having substantially equal copyfit in different typefaces. The computer program provides a method of comparing typefaces to establish allowed pairs of typefaces for heading and accent alternatives allowing a user to customize design documents with the parameter influencing text readability and copyfit automatically adjusted.

This present invention relates to an MRI scanning assembly and a method for fusing MRI images of a target thereby generating and providing high resolution, high contrast fused MRI images. The MRI images of the target are generated by different MRI devices operating at different magnetic field intensities. A method is also described for fusing MRI images generated by an MRI device operating with different operational parameters and operational protocols.

A resist film with a thickness of 250 nm or less is formed on a semiconductor substrate from a positive chemically amplified resist material including a base polymer whose solubility in an alkaline developer is changed by a function of an acid and an acid generator that has at least one electron attractive group introduced into a meta-position of an aromatic ring included in a counter action and generates an acid through irradiation with electron beams. The resist film is subjected to pattern exposure by irradiating with electron beams or extreme UV of a wavelength of a 1 nm through 30 nm band. The resist film is developed after the pattern exposure, thereby forming a resist pattern.

Mechanisms for displaying text or image over a background such as a video display frame that automatically improve legibility of text or image displayed against a background by increasing the contrast between text or image and background. The display frame may be a single image, but may also be an image within a dynamic sequence of recorded images such as a movie or other video media, or sequence of images captured in real-time by a camera or other device. In one embodiment, color component values are selected, and complementing and filtering applied to achieve contrast. In another embodiment, selecting a minimally used value for color components in the frame achieves contrast. In some cases both text or image, and background, may be altered to achieve contrast. Another embodiment provides background intensity modulation to achieve varying contrast within altered backgrounds, and smoothing over many frames in dynamic material.

There is provided a rear projection screen for transmitting image light. The rear projection screen has a plurality of single lenses arrayed evenly on an incident plane for inputting the image light and having focal points in the vicinity of an outgoing plane of the rear projection screen, an incident-side black matrix, formed in lens boundaries where the plurality of single lenses adjoin each other, for blocking the image light incident on the lens boundaries and an outgoing-side black matrix in which an opening centering on an optical axis of the single lens is formed in the vicinity of each focal point of the plurality of single lenses in the vicinity of the outgoing plane of the rear projection screen.

Disclosed are articles having a color shifting film and indicia located behind the color shifting film. The indicia include at least a first and second colored portion, the first portion including a first fluorescent colorant. The second colored portion is non-fluorescent but has a color similar to that of the first portion to enhance concealment of the indicia under certain viewing conditions. At least one of the colored portions is patterned.

Disclosed is an LED luminaire, comprising a housing positionable at a building structure location. The housing has at least one light output boundary and configured to direct light therein toward the light output boundary. A light guide configured to be located at the light output boundary to receive light operationally contained within the housing, so as to emit non-directional light at the light output boundary. At least one first LED light engine is located within the housing, the at least one first LED light engine including at least one first LED light source to emit directional light at the light output boundary.

A system and method for real-time or near real-time monitoring of tissue / organ oxygenation through visual assessment of contrast enhanced images of the target area of tissue or organ. Video of a target tissue / organ was acquired during surgery, selected image frames were extracted. Each extracted image is separated into red, green and blue CCD responses. A modified contrast image was created by subtracting blue CCD responses from red CCD responses, and plotting the resultant image using a modified colormap. Overlaying said modified contrast image onto the original extracted image frame under a selected transparency range, and display it for review.

Projection systems having o-plate compensation elements are described. The compensation elements may be negative, positive or biaxial anisotropic element and may have a homogeneous tilt or a splayed tilt. The compensation elements may be formed from a polymer liquid crystal. The compensation elements are designed to maximize azimuth-averaged contrast. The compensation elements may be placed on the same side of a liquid crystal panel when a micro-lens array is used to improve the ease of manufacture.

A perimeter security system includes a video camera (1), an element (7) for transmitting or retransmitting a radiation lighting a scene observed by the camera (1), and a unit (4) for image analysis and processing and for driving the camera (1). The system is essentially characterized in that it includes, in order to multiply the number of shots while using a single camera (1), at least two mirrors (6, 61) partially inserted into the field of vision of the latter, each mirror having the same vertical orientation but a different horizontal orientation so that the portion of the image seen by the camera on each of the mirrors always represents the same scene relative to the lighting element (7).

Method of mapping source colors of a source content represented by source coordinates comprising: —applying a reference display forward color transform characterizing a reference display device, —applying a virtual display inverse color transform configured to model a virtual display device having approximately the same color primaries as a mastering display device used to master said source content.

The present invention relates to image processing for enhancing ultrasound images. In order to provide image data showing the current situation, for example in a region of interest of a patient, an image processing device (10) for enhancing ultrasound images is provided that comprises an image data input unit (12), a central processing unit (14), and a display unit (16). The image data input unit is configured to provide an ultrasound image of a region of interest of an object, and to provide an X-ray image of the region of interest of the object. The central processing unit is configured to select a predetermined image area in the X-ray image, to register the ultrasound image and the X-ray image, to detect the predetermined area in the ultrasound image based on the registered selected predetermined image area, and to highlight at least a part of the detected area in the ultrasound image to generate a boosted ultrasound image. The display unit is configured to provide the boosted ultrasound image as guiding information on a display area (18).

A projection system that projects a text or subtitle box onto an image minimizes the contrast between the text box and the image. A transition region surrounding the text box minimizes visual disruption to the image onto which the text box is projected. The positions of optical elements of a text projector enable the text box to gradually fade out. The text projector has a lamp that defines an object plane and a light path modifier. The light path modifier is offset from the object plane, toward the lamp to blend the borders of the text box into the image projected by an image projector.

The invention relates to the detection of a movement and / or a position of an object (1) to be monitored. At least one marker (2) radiating light is arranged in an area of the object (1) such that a camera (4) can capture images of the marker (2), when the object (1) is in a first position. An image processing unit (6) is enabled to detect the marker (2) in the images and to detect a movement and / or a second position of the object (1) in response to determining that at least a part of the marker (2) cannot be detected in one or more of the images. The object (1) may particularly a person laying in a bed and the marker (2) may be arranged adjacent to the bed's lying area (3) so that the system can detect that the person leaves the bed and notify nursery staff or an emergency central.

Disclosed is an LED luminaire, comprising a housing positionable at a building structure location. The housing has at least one light output boundary and configured to direct light therein toward the light output boundary. A light guide configured to be located at the light output boundary to receive light operationally contained within the housing, so as to emit non-directional light at the light output boundary. At least one first LED light engine is located within the housing, the at least one first LED light engine including at least one first LED light source to emit directional light at the light output boundary.

A visual display device (1) comprises a visual display panel (5) which comprises an electro-optical medium (17) provided by a cholesteric liquid crystal medium which defines a plurality of pixels (20) which are alternately and selectively operable in a first light transmitting mode for forming a background (40) and a second light scattering mode for forming a character (39) against the background (40). A video projector (35) projects a light beam (37) at a rear major face (34) of the visual display panel (5) which defines an image (38) of a character (39) being displayed on the visual display panel (5). The light in the light beam (37) is incident on the pixels (20) which are operating in the second light scattering mode for forming the character (39) thereby increasing the brightness of the pixels (20) operating in the light scattering mode when viewed by a subject (33), and thus enhancing the contrast between the pixels (20) operating in the second light scattering mode which form the character (39), and the remaining pixels (20) which form a background (40) of the visual display panel (5).

The technology herein provides a dark blood delayed enhancement technique that improves the visualization of subendocardial infarcts that may otherwise be disguised by the bright blood pool. The timed combination of a slice-selective and a non-selective preparation improves the infarct / blood contrast by decoupling their relaxation curves thereby nulling both the blood and the non-infarcted myocardium. This causes the infarct to be imaged bright and the blood and non-infarct to both be imaged dark. The slice-selective preparation occurs early enough in the cardiac cycle so that fresh blood can enter the imaged slice.

A verifiable / copy-protected document features a combination of nearly identical line-screen patterns for embedding latent images within visually integrated settings. The latent images can be detected for purposes of verification with a matching viewer but are indistinguishable from their visually integrated settings under ordinary viewing conditions. The line-screen patterns, which can be incorporated into document artwork, are printed at certain combinations of line frequencies and print densities so that the line-screen patterns digitally reproduce as a largely undifferentiated solid tint.