Methods and apparatus to provide visual information associated with welding operations are disclosed. An weld training system includes a display, a camera, a communications device, and a welding helmet. The communications device communicates with welding equipment. The welding helmet has a view port. The communications device is configured to hold the camera, the communications device, and the display such that, when the welding helmet is worn by a wearer, the display is viewable by the wearer, the camera has a view through the view port such that the display displays to the wearer images taken by the camera through the view port and displays a simulated object generated based on information received from the welding equipment via the communications device.

A tooth brushing game includes starting counting a time that defines one play of a toothbrush game in response to starting the toothbrush game; capturing an image of a user; setting an area around a mouth by detecting a face area of the user from the captured image and detecting a facial part from the detected face area; detecting movement of an object including a toothbrush and a hand in the area around the mouth; controlling the toothbrush game based on the detected movement of the object; and stopping the counting of the time when the area around the mouth is not set but not stopping the counting when the movement of the object is not detected.

A modular and reconfigurable chassis enables minimalization of inventory while facilitating ease of conversion into multiple configurations of a welding simulator. The modular and reconfigurable chassis permits both hardware and software related system configurations. The chassis is adapted to receive hardware interfaces for single and multiple user configurations.

A modular and reconfigurable chassis enables minimalization of inventory while facilitating ease of conversion into multiple configurations of a welding simulator. The modular and reconfigurable chassis permits both hardware and software related system configurations. The chassis is adapted to receive hardware interfaces for single and multiple user configurations.

According to one embodiment, a display control device extracts a first feature from a first image of a welding operation, and causes a display device to display the first feature and a guide, the guide being related to the welding operation. The guide preferably includes a second feature corresponding to the first feature. The first feature and the second feature each may indicate a shape and position of a component related to the welding operation.

According to one embodiment, a display control device extracts a first feature from a first image of a welding operation, and causes a display device to display the first feature and a guide, the guide being related to the welding operation. The guide preferably includes a second feature corresponding to the first feature. The first feature and the second feature each may indicate a shape and position of a component related to the welding operation.

Dental hygiene and periodontal hand instrumentation requires alignment of the cutting surface of the instrument at a specific angle and adaptation to the tooth surface. A dental hygiene and periodontal hand instrumentation tutor provides an objective, consistent and accurate way to measure and display the actual angulation and adaptation angles of a periodontal hand instrument and assess instrument use continuously. The method includes detecting the position, orientation, motion path, pressure, angulation angle, adaptation angle, and centerline angle of a periodontal hand instrument and comparing them to ideal positions, orientations, and motion paths; and provides various forms of user feedback.

Dental hygiene and periodontal hand instrumentation requires alignment of the cutting surface of the instrument at a specific angle and adaptation to the tooth surface. A dental hygiene and periodontal hand instrumentation tutor provides an objective, consistent and accurate way to measure and display the actual angulation and adaptation angles of a periodontal hand instrument and assess instrument use continuously. The method includes detecting the position, orientation, motion path, pressure, angulation angle, adaptation angle, and centerline angle of a periodontal hand instrument and comparing them to ideal positions, orientations, and motion paths; and provides various forms of user feedback.

Described herein are examples of weld training systems that show (e.g., transparent and/or translucent) “ghost” images of a welding tool on a display screen of a welding headgear to indicate target positions and/or target orientations of an actual welding tool. In some examples, the weld training systems may additionally “reset” the target tool image to a position closer to the actual welding tool if the target tool image gets too far away. The ability to “reset” the target tool image to a position closer to the actual welding tool may help in minimizing a risk that an operator 106 will overcompensate to try to catch up with the target tool image, which can be detrimental to the weld. Additionally, resetting the target tool image to a position closer the welding tool may allow an operator to better perceive and/or understand differences in orientation and/or other technique parameters.

Described herein are examples of weld training systems that show (e.g., transparent and/or translucent) “ghost” images of a welding tool on a display screen of a welding headgear to indicate target positions and/or target orientations of an actual welding tool. In some examples, the weld training systems may additionally “reset” the target tool image to a position closer to the actual welding tool if the target tool image gets too far away. The ability to “reset” the target tool image to a position closer to the actual welding tool may help in minimizing a risk that an operator 106 will overcompensate to try to catch up with the target tool image, which can be detrimental to the weld. Additionally, resetting the target tool image to a position closer the welding tool may allow an operator to better perceive and/or understand differences in orientation and/or other technique parameters.