Weltrend Semiconductor Inc.

Ta Hsien

Te-Wei Hsu

Meng-Che Tsai

Hsuan-Ying Chen

Hung-Chih Chiang

Ming-Hung Kao

A time division based band pass image generation method includes acquiring a raw image, de-mosaicing the raw image for generating a red channel image, a green channel image, a blue channel image, and an infrared channel image, generating a single-band pass image during a first time interval according to the red channel image, the green channel image, the blue channel image, and the infrared channel image, generating a dual-band pass image during a second time interval according to the red channel image, the green channel image, the blue channel image, and the infrared channel image, and generating an infrared control signal to control infrared light for filling light of the raw image.

Time division based band pass image generation method and time division based band pass image generation system capable of generating single-band pass images and dual-band pass images

Image dewarping includes capturing a source image from a camera, selecting an input row of pixels from the source image, if the input row of pixels comprises a plurality of input pixels in a region of interest in the source image, storing the plurality of input pixels to a memory to generate an input segment of pixels, when a plurality of pixels required to generate an output row of pixels are all stored in the memory, reading from the memory the plurality of pixels corresponding to the output row of pixels, and performing coordinate transformation on the plurality of pixels to generate the output row of pixels, and when coordinate transformation has been completed on the plurality of pixels, releasing from the memory an input segment of pixels of the plurality of input segments of pixels that does not correspond to other output rows of pixels.

Image dewarping device and method

A projector focusing method includes acquiring a plane angle of a light beam and acquiring a first distance and a second distance between two sides of a light beam edge displayed on a projection plane and a time of flight device after the time of flight device emits the light beam to the projection plane, acquiring a plane equation of the projection plane according to the first distance and the second distance, acquiring an optical axis vector of a digital micro-mirror device (DMD) disposed inside the projector, designating target coordinates of the DMD, converting the target coordinates to the projection target coordinates on the projection plane according to the plane equation, acquiring an customized emitting vector according to the projection target coordinates and a lens position of the projector, and acquiring an ideal focal distances of the projector according to the customized emitting vector and the optical axis vector.

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Hsinchu, Taiwan

Ta Hsien