Abstract:
An apparatus is disclosed comprising a base capable of receiving a camera including a lens, and a projector coupled to the base and adapted to project a plurality of beams of light onto a plane positioned at a focus distance from the base, wherein the projections of the beams of light on the plane are geometric shapes, and wherein an intersection of the geometric shapes is at the center of the field of view of the lens when the lens is installed on the base. In addition, an apparatus is disclosed comprising a base capable of receiving a camera including a lens, an image processor capable of being coupled to the camera for processing an image of a target captured by the camera, and a confirmation projector coupled to the image processor, wherein the projector projects a confirmation beam onto the plane of the target when the image processor signals the confirmation projector that it has processed the image.
Abstract:
A process comprising computing a histogram of pixel intensity data collected from a digital image of an optically readable symbol including light and dark elements, thresholding the histogram to classify individual pixels as light pixels, dark pixels or gray pixels, thresholding only the portion of the histogram corresponding to gray pixels to re-classify the gray pixels into dark pixels, light pixels or unresolved gray pixels, and heuristically analyzing each string of unresolved gray pixels to determine the elements of the optically readable symbol that created the string of unresolved gray pixels. An apparatus and system to implement the process.
Abstract:
A process comprises projecting a radiation beam (213) from a movable optical element (202) onto an image sensor positioned along an optical axis (210) of the movable optical element (202) and substantially normal thereto. The movable optical element (202) is movable relative to the image sensor (222) and the radiation beam is projected at a selected angle relative to the optical axis. A plurality of targets are positioned at known front focus distances from the movable optical element, and for each front focus distance, a back focal length of the movable optical element and the position where the beam of radiation falls on the image sensor are recorded.
Abstract:
The present invention relates to inspection systems and methods, and in particular to a method for inspecting surfaces and objects using a ring illumination apparatus. A reflected image from the inspected surface or object includes a pattern of reflected image elements representing a pattern of illuminated reflective elements on an article. The method comprises the steps of: locating this pattern of reflected image elements in the reflected image; dividing at least one reflected image element into a plurality of pixels, each pixel having a gray scale value corresponding to an intensity level of reflected light in the reflected image element; positioning at least one vector across the reflected image element; examining a series of pixels along said at least one vector in order to determine at least one dimension or feature of the reflected image element; and determining inspection information pertaining to the illuminated reflective element represented by said at least one reflected image element using said determined at least one dimension or feature.
Abstract:
Scanned barcodes represented by an electrical signal are preprocessed in a PLA and delivered to a microprocessor in a form that permits efficient final processing of the data. High speed edge detection produce edge markers for the control logic and counting circuits coupled with a Johnson state counter to logically sequence the processor. Logarithmic conversion compresses the counted time interval to a single data word that can most efficiently be processed by the host microprocessor. Logic between the preprocessor and the microprocessor transfer digital representations of each bar and space to preassigned respective areas in the microprocessor memory. Bar/space margin detection performs a ratiometric comparison of each bar and space to determine every occurrence of 10:1 ratios of both bar/space and space/bar. Pointer signal information is transferred to the microprocessor indicating precisely where in memory each 10:1 margin ratio is located. A digital filter excludes spurious bar/space width in the preprocessor.
Abstract:
Embodiments of a process comprising receiving one or more images in a buffer of a computer communicatively coupled to one or more cameras, retrieving the one or more images from the buffer, and storing the one or more images as one or more memory-mapped image files in a memory-mapped file (MMF) area of a memory that is shared by the computer and the one or more cameras.
Abstract:
Embodiments of an apparatus including a first processor core having a local agent running thereon, the agent comprising a local process and a proxy agent and a second processor core having a remote agent running thereon, the remote agent being an instance of the local agent. A shared memory wherein coupled to the first processor core and the second processor core, wherein the local agent and the remote agent communicate via the shared memory. Other embodiments are disclosed and claimed.
Abstract:
Embodiments of an apparatus comprising a base including a proximal end, a distal end, and a receptacle in the distal end that is adapted to interchangeably receive a lens adapter; a set of base optics positioned in the proximal end of the base; and adjustable-focus optics positioned in the base and optically coupled to the base optics and, when the lens adapter is present, to the lens adapter. Embodiments of a process including forming a base including a proximal end, a distal end, and a receptacle in the distal end that is adapted to interchangeably receive any one of a plurality of lens adapters; positioning a set of base optics in the proximal end of the base; and positioning adjustable-focus optics positioned in the base such that they are optically coupled to the base optics and, when the lens adapter is present, to the lens adapter. Other embodiments are disclosed and claimed.
Abstract:
Embodiments are disclosed of an apparatus including a curved reflector having an interior and an open end; a light module positioned around a perimeter of the open end of the reflector, the light module including a first side having one or more interior light sources thereon to direct light toward the interior of the reflector and a second side having one or more exterior light sources thereon to direct light away from the reflector; and a light pipe coupled to the light module and aligned so that light from the one or more exterior light sources is launched into the light pipe. Other embodiments are also disclosed and claimed.
Abstract:
An apparatus comprising a movable optical element having an optical axis and including one or more focusing elements, an image sensor positioned along the optical axis and substantially normal thereto, and a radiation source attached to the movable optical element, wherein the radiation source directs a beam of radiation onto the sensor at a selected angle relative to the optical axis. A process comprising positioning a sensor along, and normal to, an optical axis of a movable optical element, projecting a radiation beam onto the sensor from a radiation source attached to the movable optical element, wherein the radiation beam is at a selected angle relative to the optical axis, and adjusting the position of the movable optical element until the position where the radiation beam falls on the sensor corresponds to the position where the radiation beam is expected to fall on the sensor when the movable optical element is in focus. Other embodiments are disclosed and claimed.