Image display system for work machine

An image display system for a work machine applied to a work machine including working equipment having a working tool, a turning body to which the work equipment is attached, a position detection unit that detects a position of the working equipment, a distance detection device, and an imaging device, the image display system comprising:

• a display device;
• and
• a processing device configured to generate a first image by using information on a position of the working tool obtained by the position detection unit, and information on a three-dimensional shape of a work target obtained from information on a distance which is obtained by the distance detection device attached to the work machine and which is from the work machine to the work target, and combines the first image with a second image that is an image of the work target imaged by the imaging device, and causes the display device to display the combined image, wherein
• the first image is generated based on information on a first position corresponding to the working tool on a surface of the work target opposed to the work tool and information on a position of a portion extending from the first position along a turning direction of the turning body,
• wherein the processing device obtains a position of an intersecting portion where a circular arc, whose radius is the distance from the rotation center axis of the turning body in a three-dimensional coordinate system with reference to the work machine including the working tool, is projected on the surface of the work target in the direction parallel to the rotation center axis of the turning body and a line connecting two points along a surface of a work target is projected on the surface of the work target, with the line being perpendicular to two lines extending from the working tool to the surface of the work target and connecting the two points where the two lines extending from the working tool intersect the surface of the work target, and
• the processing device generates the first image using the information on the position of the intersecting portion.

An image display system for a work machine applied to the work machine including working equipment having a working tool and a turning body to which the working equipment is attached, the image display system comprising:

• a position detection unit configured to detect a position of the working equipment;
• a distance detection device attached to the work machine and configured to obtain information on a distance from the work machine to a work target;
• a processing device configured to generate a first image by using information on a position of the working tool obtained by the position detection unit, and information on a three-dimensional shape of the work target obtained from the information on the distance obtained by the distance detection device, and causes a display device to display the first image;
• and
• an imaging device attached to the turning body, wherein
• the first image is generated based on information on a first position corresponding to the working tool on a surface of the work target opposed to the work tool and information on a position of a portion extending from the first position along a turning direction of the turning body,
• the first image indicates the position of a cutting edge of the working tool on the work target, and indicates the position of the cutting edge on the surface of the work target when the turning body turns while the working equipment maintains the current attitude,
• the processing device generates a line image along the surface of the work target by using the information on the position of the work target, combines the line image with an image of the work target, and displays the combined image on the display device,
• the processing device combines the first image and a second image that is an image of the work target imaged by the imaging device and causes the display device to display the combined image,
• the processing device obtains an area occupied by the working equipment in the second image using an attitude of the working equipment, and removes the obtained area from information on a shape of the work target, and
• the line image includes a plurality of first line images radially extending from a position corresponding to a turning center axis of the turning body, and a plurality of second line images extending along a turning direction of the turning body around the turning center axis,
• wherein the processing device obtains a position of an intersecting portion where a circular arc, whose radius is the distance from the rotation center axis of the turning body in a three-dimensional coordinate system with reference to the work machine including the working tool, is projected on the surface of the work target in the direction parallel to the rotation center axis of the turning body and a line connecting two points along a surface of a work target is projected on the surface of the work target, with the line being perpendicular to two lines extending from the working tool to the surface of the work target and connecting the two points where the two lines extending from the working tool intersect the surface of the work target, and
• the processing device generates the first image using the information on the position of the intersecting portion.