Abstract: It is intended to easily perform a work concerning lifting of the crawler. A crawler frame has a crawler frame outer surface that is opposite to a surface via which the crawler frame is attached to a traveling body main part in the left-right direction. A bracket includes an attaching part, a circuitous part, and a crawler lifting section. The attaching part is attached to the crawler frame outer surface. The circuitous part is partially arranged below and above a crawler belt on an outer side thereof in the left-right direction, and extends around the crawler belt. The crawler lifting section is connected to the circuitous part and arranged above the crawler belt for receiving the crawler lifting tool.

Abstract: A gantry for a construction machine. The gantry includes a front leg, an upper rear leg, a lower rear leg, and a connection member. The connection member connects an interconnection section for interconnecting the front leg and the upper rear leg to a base. The connection member includes an upper end portion rotatably connected to the interconnection section. The connection member includes a shaft section and the upper rear leg includes a shaft holding portion for holding the shaft section. The shaft holding portion includes a shaft holding surface for holding a lower end portion of the shaft section, a dislodgement prevention portion, and a guide portion inclined downward forward to guide the shaft section to the shaft holding surface. The shaft section climbs over the dislodgement prevention portion through relative displacement to the connection member in a rotation radial direction.

Abstract: A gantry for a construction machine. The gantry includes a front leg, an upper rear leg, a lower rear leg, and a connection member. The connection member connects an interconnection section for interconnecting the front leg and the upper rear leg to a base. The connection member includes an upper end portion rotatably connected to the interconnection section. The connection member includes a shaft section and the upper rear leg includes a shaft holding portion for holding the shaft section. The shaft holding portion includes a shaft holding surface for holding a lower end portion of the shaft section, a dislodgement prevention portion, and a guide portion inclined downward forward to guide the shaft section to the shaft holding surface. The shaft section climbs over the dislodgement prevention portion through relative displacement to the connection member in a rotation radial direction.

Abstract: The present invention provides a crane where a spreader retainer is disposed on a rear surface of an extreme end of the lowest boom portion used both for a tower boom and a normal boom, a distance between an upper spreader, which constitutes a boom raising/lowering apparatus, and a lower spreader at the maximum boom raise angle and the length of the lowest boom portion are set such that the upper spreader can be lowered to the position of the spreader retainer if the boom raising/lowering apparatus lays the boom on the ground, and a boom raising/lowering rope is then loosened for disassembly of either the tower or normal boom. Consequently, the upper spreader can be lowered to the position of the spreader retainer on the lowest boom portion when the boom is disassembled either for the tower crane or normal crane specification.

Abstract: The present invention provides a crane where a spreader retainer is disposed on a rear surface of an extreme end of the lowest boom portion used both for a tower boom and a normal boom, a distance between an upper spreader, which constitutes a boom raising/lowering apparatus, and a lower spreader at the maximum boom raise angle and the length of the lowest boom portion are set such that the upper spreader can be lowered to the position of the spreader retainer if the boom raising/lowering apparatus lays the boom on the ground, and a boom raising/lowering rope is then loosened for disassembly of either the tower or normal boom. Consequently, the upper spreader can be lowered to the position of the spreader retainer on the lowest boom portion when the boom is disassembled either for the tower crane or normal crane specification.

Abstract: An image processing method and device computes the image quality as an evaluation value, determine the image quality based on this evaluation value, and employ a restoration process in accordance with image quality when this image quality is poor.

Abstract: A background predicting process is disclosed which determines, for each designated line of input image data, whether or not the pixels of a particular line are the edge portion of a line drawing. The process finds the brightness value for each pixel, excluding the effects of the brightness of the edge portion in the line drawing (step s1). Next, a background prediction modifying process is accomplished which determines whether or not the effects of a line drawing portion other than the edge are included in the brightness value of each pixel in the line being processed. When the effects of a line drawing portion other than the edge are included, the process finds the brightness value of each pixel excluding this effect (step s2). A background modification is then conducted by modifying the brightness so as to achieve a desired brightness value on the basis of the brightness value of each pixel obtained by this background prediction modifying process (step s3).

Abstract: An image processing method and device computes the image quality as an evaluation value, determine the image quality based on this evaluation value, and employ a restoration process in accordance with image quality when this image quality is poor.

Abstract: A method and apparatus are provided to allow threshold values needed for the desired number of gradations to be set through a simple process when converting image data with numerous values into a low number of gradations. The desired number of gradations is achieved without shading being noticeable even for images having shading. The cumulative frequency distribution of the pixels for each brightness is determined from image data having a brightness range with designated gradations. The average brightness and standard deviation of the portion that is primarily background is determined from this cumulative frequency distribution. The first threshold value is determined on the basis of this average brightness and standard deviation, the second through n-1st threshold values corresponding to the meaningful information are determined on the basis of this first threshold value. An n value conversion process is accomplished using these threshold values.

Abstract: An image processing method and device computes the image quality as an evaluation value, determine the image quality based on this evaluation value, and employ a restoration process in accordance with image quality when this image quality is poor.

Abstract: A method and apparatus are provided to allow threshold values needed for the desired number of gradations to be set through a simple process when converting image data with numerous values into a low number of gradations. The desired number of gradations is achieved without shading being noticeable even for images having shading. The cumulative frequency distribution of the pixels for each brightness is determined from image data having a brightness range with designated gradations. The average brightness and standard deviation of the portion that is primarily background is determined from this cumulative frequency distribution. The first threshold value is determined on the basis of this average brightness and standard deviation, the second through n- 1st threshold values corresponding to the meaningful information are determined on the basis of this first threshold value. An n value conversion process is accomplished using these threshold values.

Abstract: An image processing method and device computes the image quality as an evaluation value, determine the image quality based on this evaluation value, and employ a restoration process in accordance with image quality when this image quality is poor.

Abstract: An image processing method and device computes the image quality as an evaluation value, determine the image quality based on this evaluation value, and employ a restoration process in accordance with image quality when this image quality is poor.