Method of displaying a dead zone of a construction machine and apparatus for performing the same
View Patent ↗In a method of displaying a dead zone of a construction machine, actual images with respect to omnidirectional views of a cabin in the construction machine may be obtained. A virtual image with respect to the dead zone generated by a working tool, which may be connected to the cabin, may be obtained from the actual images. The virtual image may be displayed on a monitor in the cabin. Thus, a worker in the cabin may accurately acknowledge whether a man or a fixture may exist or not in a region in front of a rotation direction of a boom by seeing the virtual image. Thus, a negligent accident caused by the rotation of the boom may be prevented.
1. A method of displaying a dead zone of a construction machine, the method comprising:
obtaining actual images with respect to omnidirectional views of a cabin in the construction machine;
measuring a rotation angle of a working tool connected to the cabin;
detecting the dead zone in accordance with the rotation angle of the working tool;
measuring a position of the dead zone;
obtaining a previous image of a substitutive dead zone of the working tool in accordance with the rotation angle and a rotation direction of the working tool;
synthesizing any one of the actual images corresponding to the dead zone with the previous image of the substitutive dead zone to form a virtual image of the dead zone; and
displaying the virtual image on a displaying unit of the cabin.
2. The method of claim 1 , wherein the actual images comprise a front actual image, a rear actual image, a left actual image and a right actual image of the cabin, and the previous image of the substitutive dead zone is obtained from the left actual image.
3. The method of claim 1 , further comprising detecting a rotation of the cabin.
4. The method of claim 1 , wherein the construction machine comprises an excavator, and the working tool comprises a boom of the excavator.
5. An apparatus for displaying a dead zone of a construction machine, the apparatus comprising:
a camera unit configured to obtain actual images with respect to omnidirectional views of a cabin in the construction machine;
an image-matching unit comprising a processor and a memory wherein the memory contains instructions for causing the processor to process the actual images obtained from the camera unit;
a controlling unit comprising a processor and a memory wherein the memory contains instructions for causing the processor to obtain a virtual image with respect to the dead zone generated by a working tool, which is connected to the cabin, among the actual images processed by the image-matching unit;
a displaying unit configured to display the virtual image obtained by the controlling unit;
a rotation-detecting unit comprising a processor and a memory wherein the memory contains instructions for causing the processor to detect a rotation of the cabin and to transmit a signal of the detected rotation to the controlling unit;
a rotation angle-measuring unit comprising a processor and a memory wherein the memory contains instructions for causing the processor to measure a rotation angle of the working tool and to transmit a signal of the measured angle to the controlling unit; and
a dead zone-detecting unit comprising a processor and a memory wherein the memory contains instructions for causing the processor to detect a position of the dead zone in accordance with a rotation angle of the working tool,
wherein the camera unit comprises:
a front camera configured to photograph a front of the cabin,
a rear camera configured to photograph a rear of the cabin,
a left camera configured to photograph a left of the cabin, and
a right camera configured to photograph a right of the cabin,
wherein the image-matching unit is configured to synthesize at least one previous image obtained by previously photographing the dead zone with a present image of the dead zone by a control signal of the controlling unit, and
wherein the controlling unit is configured to synthesize any one of the actual images corresponding to the dead zone with a previous image of a substitutive dead zone of the working tool in accordance with the rotation angle and a rotation direction of the working tool to form a virtual image of the dead zone.
6. The apparatus of claim 5 , wherein the construction machine comprises an excavator, and the working tool comprises a boom of the excavator.
7. The apparatus of claim 5 , wherein the previous image of the substitutive dead zone corresponds to a portion of an image photographed by the left camera.