Modular infrared heater units for a sauna and methods for constructing a sauna. The infrared heater units include one or more heating elements disposed in a housing. The housing is configured for direct mounting on walls of a structure and includes a pigtail for coupling to a controller. The housing is dimensioned to accommodate a paneling or other cladding on the walls and includes a trim frame that obscures edges of the cladding adjacent to the heater unit. Construction of a sauna unit includes mounting of a plurality of the heater units on walls of the structure; electrically communicably coupling the heater units to a controller; and providing any desired cladding to the interior of the structure.

The present disclosure provides systems and methods that leverage neural networks for high resolution image segmentation. A computing system can include a processor, a machine-learned image segmentation model comprising a semantic segmentation neural network and an edge refinement neural network, and at least one tangible, non-transitory computer readable medium that stores instructions that cause the processor to perform operations. The operations can include obtaining an image, inputting the image into the semantic segmentation neural network, receiving, as an output of the semantic segmentation neural network, a semantic segmentation mask, inputting at least a portion of the image and at least a portion of the semantic segmentation mask into the edge refinement neural network, and receiving, as an output of the edge refinement neural network, the refined semantic segmentation mask.

A system for heating a pool or spa. The system may include a circuit for interrupting the power supply to a heating element of the pool or spa. A thyristor may be used to vary the voltage supply to the heating element, such as by use of a variable resistor, capacitor, and a triac. The system may adjust the resistance on the variable resistor to control to voltage supply to the heating element, allowing a larger heating element to be used more efficiently.

A sauna monitoring method and system, in which an interfacing unit receives measurement information from a plurality of sensors and outputs the measurement information over a digital bus. An access unit receives the measurement information from the digital bus sends the measurement information to one or more recipients in the Internet.

A shower system for a shower having a water supply mechanism including a hot water supply and a cold water supply. The system includes: a shower stall; an air heating and delivery mechanism for heating and delivering hot air to the shower stall and including: an air inlet, air piping, an air supply blower to produce an air flow, an air heater, and a hot air outlet. The system further includes: a shower-water piping system including: a hot and cold water mixing valve; and a water fogger nozzle disposed within the hot air outlet to thereby produce a spray of hot air and water suspension; and an air and water temperature and flow controller.

Power feed connections and sauna heating panels include a power feed having a first insulated conductor electrically coupled to a first terminal and a second insulated conductor electrically coupled to a second terminal. The first and second terminals are electrically coupled with at least one heating element. In some cases the power feed includes a supply portion, a connection portion, and an extension portion. The extension portion has one or more conductors in a twisted configuration extending away from the first and second terminals. In some cases the power feed includes an extension conductor portion coupled to a return conductor portion in a twisted configuration. The extension portion extends away from a second terminal past a second connection point and the return portion returns back to and connects to the second connection point at the second terminal. Methods for providing power connections to heating panels are also provided.

Systems and methods are provided for controlling infrared radiation (IR) sources of a sauna including tuning IR wavelength-ranges and radiated power-levels of IR sources, and directing IR to locations on a user's body. In one illustrative embodiment, a sauna may be provided having adjustable IR emitters to emit IR at any wavelength resulting in a desirable radiation treatment for the sauna user. In another illustrative embodiment, a method is provided for tuning IR emitters in a sauna.

A mid infrared radiation sauna is shown that includes a) a room, b) one or more elements able to emit infrared radiation; c) means for operating the elements; and d) a cover plate positioned between at least one of the elements and the open space of the room to be accessed by individuals.

The present disclosure provides systems and methods that leverage neural networks for high resolution image segmentation. A computing system can include a processor, a machine-learned image segmentation model comprising a semantic segmentation neural network and an edge refinement neural network, and at least one tangible, non-transitory computer readable medium that stores instructions that cause the processor to perform operations. The operations can include obtaining an image, inputting the image into the semantic segmentation neural network, receiving, as an output of the semantic segmentation neural network, a semantic segmentation mask, inputting at least a portion of the image and at least a portion of the semantic segmentation mask into the edge refinement neural network, and receiving, as an output of the edge refinement neural network, the refined semantic segmentation mask.

An apparatus for a sauna includes a first and second heating element. The first heating element has a first conductive path and is coupled to pass a current. The second heating element has a second conductive path that runs adjacent to the first conductive path. The second heating element substantially blocks an electric field produced within the first heating element. The first conductive path is coupled to redirect the current to the second conductive path and set up complementary magnetic fields between the first and second heating elements.