531results about How to "Inspection is accurate" patented technology

An image correction device for use in a pattern inspection apparatus is disclosed, which has automatic adaptability to variations in density of a pattern image of a workpiece being tested. The device is operable to identify a two-dimensional (2D) linear predictive model parameters from the pattern image of interest and determine the value of a total sum of these identified parameters. This value is then used to switch between a corrected pattern image due to the 2D linear prediction modeling and a corrected image that is interpolated by bicubic interpolation techniques. A pattern inspection method using the image correction technique is also disclosed.

The invention discloses a driver fatigue detecting system based on a smart mobile phone. A video colleting module (1) collects images of the face and the eyes of a driver. An image preprocessing module (2) removes image noise through the gray scale adjustment of the image pixel points. A face detecting and locating module (3) achieves face detection and locating based on image pixel nonlinear color transformation. A face following module (4) improves the speed of detection of the face area of the driver through the correlation between every two adjacent images. An eye detecting module (5) conducts binarization on the images based on the improved horizontal Sobel edge detection method. An eye feature parameter extracting module (6) extracts the pupil opening degree feature parameters. A fatigue judging module (7) judges whether the driver is fatigue when driving a vehicle based on the PERCLOS method. According to the driver fatigue detecting system based on the smart mobile phone, the face detection is rapid, efficient and accurate, the requirement for the resolution is low, a camera of an ordinary mobile phone can achieve image collection and detection, popularization and application are convenient, cost is low, and the accuracy is high.

A pattern inspection apparatus can be provided, for example, in a scanning electron microscope system. When patterns of a plurality of layers are included in a SEM image, the apparatus separates the patterns according to each layer by using design data of the plurality of layers corresponding to the patterns. Consequently, the apparatus can realize inspection with use of only the pattern of a target layer to be inspected, pattern inspection differently for different layers, or detection of a positional offset between the layers.

The invention discloses a handset casing testing apparatus and method based on computer vision. The apparatus comprises a high-definition camera, an auxiliary light source and an industrial control computer. The auxiliary light source illuminates the visual field range of the high-definition camera. The high-definition camera and the auxiliary light source are arranged on handset casing testing stations of a production line and can capture handset casing parts requiring precise tests. The industrial control computer is electrically connected with the high-definition camera and the auxiliary light source. The method comprises a camera calibrating step; an image acquisition step; an image processing step; and a test result outputting step. By adopting technologies based on image processing, the apparatus and method achieve that precise positioning and precise testing are effective ways for automated production. The computer vision technologies have the characteristics of non-contact measurement, relatively wide spectrum range and capabilities of working for long, etc. The technologies can be widely applied in the industrial field and used for rapidly and precisely testing product related indexes. A high speed is achieved. A low maintenance cost is further realized.

To inspect a status of an inspection object by using an inspection apparatus for extracting amount of characteristic to an inputted waveform signal and determining a status on the basis of the extracted amount of characteristic. Specifically, the inspection apparatus uses a normal knowledge that is generated on the basis of only the data of a normal status at an initial stage to determine whether or not the status of the inspection object complies with the normal status (S1, S2). The inspection apparatus generates an abnormal kind knowledge by abnormal kind on the basis of the data of an abnormal status that are collected in accordance with repeat of the determination (S3 to S6), and then, determines the status by using the normal knowledge and the abnormal kind knowledge (S7). If a defective product is eliminated due to change of design or the like, determining the status on the basis of a new normal knowledge, a mass production shifts to a stable period of mass production (S8 to S10).

An inspection method includes photographing a measurement target to acquire image data for each pixel of the measurement target, acquiring height data for each pixel of the measurement target, acquiring visibility data for each pixel of the measurement target, multiplying the acquired image data by at least one of the height data and the visibility data for each pixel to produce a result value, and setting a terminal area by using the produced result value. Thus, the terminal area may be accurately determined.

A tablet inspecting device which can overcome counting and discrimination errors is provided. A medicine packaging envelope strip is formed by connecting in a strip shape multiple envelopes separated when a user takes tablets, and is imaged, thus counting the tablets. A conveyance passage along which the strip is conveyed in an associated longitudinal direction, conveyance mechanism, and gap forming part forming a gap between adjacent tablets, the conveyance passage including a horizontal passage, a first inclined passage with upward inclination extending from the horizontal passage, and a second inclined passage with downward inclination and an upper end spaced apart from an upper end of the first passage, the gap forming part including a rod body having projecting portions staggered throughout a peripheral surface thereof, being arranged at the space approximately orthogonal to the conveyance direction, and being rotatable about a center axis thereof, are provided.

Quantity of flux coated on fusible alloy of a thermal fuse disclosed can be inspected accurately by an image processing method. The thermal fuse comprises:

• • (a) first insulation film 11 coupled with a pair of metal terminals 12;
  • (b) fusible alloy 13 coupled between ends of the metal terminals 12, being placed above first insulation film 11;
  • (c) flux 14 coated on fusible alloy 13; and
  • (d) second insulation film 15 disposed on first insulation film 11 so that an internal space is formed, being placed above fusible alloy 13,
  • wherein at least either of first insulation film 11 or second insulation film 15 is transparent or translucent, and flux 14 has the Gardner color scale from 4 to 16.

An electromagnetic ultrasonic flaw detection method is provided which ensures highly accurate inspection of an interior surface of a fin-implanted heat transfer tube for detection of corrosion and requires less time for the inspection, no contact medium such as water, and less time and less costs for a pretreatment. The electromagnetic ultrasonic flaw detection method comprises: moving an EMAT 1 in a fin-implanted heat transfer tube 2 of an air cooling heat exchanger axially of the tube; causing the EMAT 1 to generate an axially symmetric SH wave 3 by utilizing an electromagnetic force to vibrate a tube body 11 of the fin-implanted heat transfer tube 2 to cause resonance; causing the EMAT 1 to detect a resonant frequency; and if the detected resonant frequency is different from a resonant frequency observed when the tube body 11 has a normal wall thickness, judging that an interior surface of the tube body 11 has a corroded portion.

A method of measuring occluded features in machine vision metrology. The method allows for high precision measurement of features that are partially obscured by an extraneous object (e.g., an overlay grid of a flat panel display screen mask). The method first roughly locates the edge points of the feature to measure. In one embodiment, the rough edge location is performed by using morphology filters to delete the extraneous object (e.g., the grid) and then doing edge detection on the filtered image. Once the rough edge locations are determined, the method then returns to the original unaltered image and for each of the roughly located edge points does edge detection in a close neighborhood of the point in the original unaltered image. These refined edge points are then used to fit the feature for highly precise measurements.

In a magnetic core type laminated inductor, magnetic gap layers are interposed between layers of conductive patterns, and the magnetic gap layers are formed separately on multiple layers mutually distant from each other while sandwiching a magnetic body layer. Moreover, the multiple magnetic gap layers are vertically symmetrically disposed relative to a central portion of lamination in a magnetically equivalent fashion, and the respective magnetic gap layers interpose at least two layers of the conductive patterns therebetween.

The invention discloses a device and method integrating electric pulse fracturing and permeability improvement and gas seepage measurement. The device and method are suitable for improving the gas extraction rate of coal seams which has low permeability and high adsorption. The device comprises a high-voltage charging power supply, a high-voltage energy storage capacitor, a high-voltage dischargeswitch, a coal sample fixing device, a hydraulic control system, a vacuum pump device, a gas cylinder and a pressure gauge. The method comprises the steps that 1, the high-voltage charging power supply is used for charging the high-voltage energy storage capacitor; 2, the high-voltage discharge switch is turned on, a coal sample is discharged through a positive electrode and a negative electrode,huge energy is generated and directly acts on a coal body, and cracks are formed in the coal body; and 3, the permeability of the coal sample subjected to breakdown is measured through a built-in gasseepage device in the coal sample fixing device. According to the device and method, integral electric pulse fracturing and permeability improvement and gas seepage measurement can be realized; the method is accurate in measurement, convenient to operate and capable of providing a reliable basis for the electric pulse fracturing effect.