A nondestructive method and apparatus for the inspection of impact treated surfaces to predict impact treatment process variables which acquires a multi-dimensional map of an impact treated surface, characterizes the multi-dimensional map to develop surface texture parameters, and develops relationships between the surface texture parameters and the impact treatment process variables.

The invention relates to a method for automatic inspection of the surface 20 of a moving object, in which a region on the object's surface is illuminated from at least two different illumination directions 13-15. The object's illuminated surface region is imaged with a camera to provide image information for analysis. The light sources in the different illumination directions 13-15 are pulsed to illuminate the object's surface region at different times, the pulsing frequency being >1 kHz The ...

A system for texture-based automatic detection of man-made objects or targets or features of scenes (automatic target recognition, ATR or detection, ATD) in representations of sensed natural environmental scenes spatially partitions digitized picture elements (pixels) of the scene into plural spatially coordinated groups of pixels and simultaneously determines texture measures including a composite texture measure for each group of pixels. Following self-calibration of the spatially coordinated ...

A computerized method and system based on quantitative analysis of geometric features of various infiltrate patterns in chest images for the detection and categorization of abnormalities related to the infiltrate patterns. Chest images are digitized and a lung texture analysis is performed on a number of small regions of interest (ROIs) in order to determine a classification of normal or abnormal of the particular patient's lungs. If the lungs are determined as being abnormal, large ROIs with a ...

A laser based inspection tool (LIT) for inspecting planar surfaces is described. In a preferred embodiment the LIT can simultaneously inspect both planar surfaces of disks for use in disk drives. In one embodiment of the invention, the incident beam is directed onto the surface to be inspected at an angle slightly offset from perpendicular so that the reflected beam is physically separated from the incident beam. The reflected beam is routed to a detector which converts the intensity of the refl...

Systems methods and computer program products are provided for obtaining a three-dimensional data set that is representative of a surface of a three-dimensional object. A grating pattern, having a sinusoidally varying intensity pattern, is projected onto the surface of an object. The projected grating pattern is shifted a number of times and two-dimensional deformed grating images of an area segment of the object surface are captured and stored. A two-dimensional array of optical phase values is...

A surface inspecting apparatus comprises an image achieving unit for achieving an image of a surface of an object; and a controller for providing the symmetry feature of the spot or contaminant by using the magnitude of the intensity gradient and the orientation of the intensity gradient for each pixel of the achieved surface image to thereby detect a spot or contaminant on the surface. The controller detects the spot or contaminant by using a symmetry magnitude map formed by the magnitude of th...

In the device according to the present invention, it is possible readily to distinguish between a road of travel and an obstacle in an image, simply using a distance image, even in cases where such a distinction is difficult to make, for instance, when a moving body is inclined during travel or the road forms a slope. Three-dimensional co-ordinate position data in a three-dimensional co-ordinate system is calculated for each pixel of the distance image, on the basis of two-dimensional co-ordinat...

An image processor based system and method for recognizing predefined-types of coating density imperfections in a web, specifically continuous type or streak imperfections. Continuous type imperfections are recognized in a continuous web moved at a certain rate through an imaging region illuminated by a stripe of substantially constant illumination. A time-delay integrating CCD camera is focused on the illuminated imaging region. The TDI CCD camera comprises an array of N rows of M light sensiti...

A method for obtaining a signature from a fired bullet is obtained by mounting the bullet to turn substantially about a longitudinal axis of the bullet, illuminating a surface of the bullet, obtaining and storing a frame image at a given position of the surface portion using microscope optics, the frame image having a transverse extent substantially transverse to the longitudinal axis, advancing the frame image position by an amount less than a transverse extent of the frame image, repeating the...