摘要:
A method for detecting an obstacle by using two cameras, the obstacle being on a reference plane in a field of view common to the two cameras, the method inputting a first image and a second image from the two cameras, respectively, transforming the first image to a transformed image, obtaining a degree of similarity D indicating a similarity between an image in a processing region established in the second image and an image in a corresponding processing region established in the first image, obtaining a degree of similarity P indicating a similarity between an image in the processing region established in the second image and an image in a corresponding processing region established in the transformed image, detecting the obstacle based on the degree of similarity D and the degree of similarity P on a reference plane region, obtaining a difference K between the degree of similarity D and the degree of similarity P both obtained as being on the reference plane region, judging that the obstacle is at a position where the difference K is large, judging that there is no obstacle when there is no difference K of degree of similarity equal to or greater than a threshold value set beforehand about the vertical directions of all of the images, and detecting that there is the obstacle when there is the difference K of degree of similarity equal to or more than the threshold value in the vertical direction of the image.
摘要:
An image forming system includes: an image forming device and a data processing device. The image forming device includes: an image forming unit; a color correction information preparing unit preparing color correction information on the basis of an image forming state of the image forming unit; and a color correction information sending unit sending the color correction information. The data processing device includes: a color correction information receiving unit receiving the color correction information; an image data correcting unit correcting image data on the basis of the received color correction information; and an image data sending unit sending the corrected image data to the image forming device, the image forming unit in the image forming device forming an image on the basis of the image data.
摘要:
An obstacle detecting apparatus configured to detect an obstacle present on the road, such as a vehicle running ahead, a parked vehicle, and a pedestrian, by distinguishing the obstacle from a mere object causing no obstruction to driving of the vehicle, such as the texture like the white line or signs on the road surface, and the guardrail along the roadside.
摘要:
An obstacle detection system using stereo cameras mounted on a vehicle, to detect an obstacle existing on a ground plane at a high speed and in a high precision even with the stereo cameras being uncalibrated and with a vibration during a traveling and a change in the inclination of the ground plane. The obstacle detection system comprises: a plurality of uncalibrated TV cameras for inputting stereo images; an image storage unit 2 for storing a plurality of images inputted from the TV cameras; a feature extraction unit 3 for extracting a plurality of mutually parallel lines existing on the ground plane; a parameter computation unit 4 for determining a relation to hold between the projected positions of an arbitrary point of the ground plane upon the individual images, from the plurality of lines extracted by the feature extraction unit 3; and a detection unit 5 for detecting an object having a height from the ground plane, by using the relation determined by the parameter computation unit 4.
摘要:
Provided is a technology for helping safe driving and realizing automatic driving of vehicles, or for counting the number of passing vehicles on the road or monitoring those passing vehicles for their driving. Using a plurality of cameras mounted in a vehicle or provided above a road, even if the relationship between the road plane and the respective cameras constantly changes in relative position or posture due to camera vibration or a change in road tilt, any obstacles located on the road such as other vehicles ahead, parked vehicles, and pedestrians on the road are detected without confusing those with textures including white lines, road signs, paint, road stains, and shadows of roadside objects, all of which do not disturb vehicle driving. An obstacle detection device 10 is structured by an image input section 11 for receiving images from a plurality of image pick-up devices 101, a correspondence detection section 12 for finding a plurality of pairs of corresponding points from the received right and left images, the slope degree calculation section 13 for calculating a slope degree of a plane including the corresponding points, and a result determination section 14 for determining as there being an obstacle when the calculated slope degree is larger than a predetermined value.
摘要:
A laser printer develops print data into first image data having a resolution of 1200×1200 dpi in the fine mode. Then, the laser printer breaks the first image data into blocks of two consecutive lines, retrieves image data A0, B0, A1, and B1 from the two consecutive lines of image data, and rearranges the retrieved image data alternately. As a result, two lines of image data are rearranged into one line of image data having a resolution of 2400×600 dpi. Based on the rearranged image data, the laser printer having an intrinsic resolution of 600×600 dpi executes printing while performing pulse width modulation of a laser beam. On the other hand, in the normal mode, the laser printer develops print data into second image data having a resolution of 600×600 dpi, and executes printing based on the second image data. Accordingly, the print mode can be changed appropriately between the fine mode and the normal mode. In the fine mode, the low-resolution laser printer can produce printouts that are perceived to be substantially the same as those produced by a high-resolution printer. In the normal mode, printouts are produced at a normal resolution.
摘要:
Circuit elements of surface-mounting type such as MOSFETs etc. are mounted on a circuit board by soldering. The circuit board is retained slantingly by a base so that any one of the MOSFET falls out by its self-weight when the solder melts due to an abnormal heat generation of the MOSFET. The falling of the MOSFET is stopped by a stopper member, and then the MOSFET becomes in an electrically open state and retained at the stopped position in consequence of the subsequent cooling of the solder. Accordingly, even if one or more of the MOSFETs cause the abnormal heat generation, the continuous heat generation of the MOSFET is stopped and also the other circuit elements are prevented from being short-circuited.
摘要:
An evacuation system having a long service life, a compact configuration and high reliability is disclosed. The system enables the process gases to be reused, so that the overall costs of capital investment and operation are reduced. The system comprises a processing chamber, and a vacuum pump communicating with the processing chamber by way of an evacuation conduit for evacuating the processing chamber. The evacuation conduit are provided with not less than two trapping devices arranged in series and operating at different temperatures for capturing different components contained in an exhaust gas discharged from the processing chamber.
摘要:
A liquid coater which includes a mist feed tube (5) for feeding oil mist into an airtight container (2), an air hose (10) for feeding air into the airtight container (2) and a mist conveyor pipe (11) for conveying the oil mist pressurized by air inside the airtight container (2) to the outside of the container. Therefore, droplets and large mist particles can be trapped inside the container from the mist feed tube (5), and the mist can be conveyed at a high speed. The liquid coater has excellent applicability. The mist feed tube (5) has a double tube structure comprising an air tube (7) in which air flows, and an oil tube (6) which extends in the air tube (7) and in which the oil flows. The distal end of the oil tube (6) is positioned more inward than the distal end of the air tube (7), so that the oil mist can be fed by a simple construction.
摘要:
Data is transferred via FIFO memories on a word unit basis. The FIFO memory is designated by an upper bit portion of a write address. An ID bit indicating whether a transfer word indicates a command or parameters is allocated to a lower bit portion and is written into the FIFO memory together with inherent word data. Upon reading, a lower bit portion of a read address is compared with the ID bit read out from the FIFO memory. When they don't coincide, the presence of an error is decided. In case of adding redundant bits to the transfer word and judging a loss of word, on the transmission side, transmission side judgment bits having a fixed bit arrangement 01 of two bits are added to each word. Further, with respect to the m-th word, the transmission side judgment bits are shifted by (m-1) bits and a bit arrangement is changed and the resultant data is transmitted. On the reception side, the transmission side judgment bits are reversely shifted to the original positions and three bits in which one bit adjacent to the transmission side judgment bits was added thereto are checked. When a bit arrangement of the reception side judgment bits corresponding to the transmission side judgment bits coincides with a bit arrangement of the transmission side judgment bits, it is determined that there is no word loss. When they don't coincide, it is decided that there is a word loss.