Abstract: The present invention is a lighting device with color temperature control function, including two modulated power input ends, a rectifier that rectifies the modulated power and outputs a rectified modulated power, a first LED module and a second LED module that have different color temperatures, and a dimming control unit. The modulated power includes multiple cycles of a sinewave, and each cycle of the sinewave has a firing angle. The dimming control unit reads a lighting modulation command code that is carried in the modulated power according to the firing angle of each cycle, and controls the luminous intensity of the first and second LED modules respectively to perform a designated combination of color temperature of lighting effect.

Abstract: A wavelet domain half-pixel motion compensation process that reduces aliasing effects that down sampling causes in the wavelet transform uses an H-transform and provides motion estimation and compensation in wavelet domain without requiring an inverse wavelet transform. For encoding, a q-dimensional (e.g., q=2) H-transform is applied in a conventional manner to non-overlapping q×q matrices in a first frame. When determining motion vectors for a second frame, “half-pixel” interpolation of the wavelet data of the first frame determines generates half-pixel data corresponding to q×q space-domain matrices that are offset (e.g., 1 pixel) horizontally and/or vertically from the q×q matrices that were transformed. Motion estimation techniques can then identify object motion by comparing wavelet domain object data in one frame to actual and interpolated wavelet domain data for another frame.

Abstract: A wavelet domain half-pixel motion compensation process that reduces aliasing effects that down sampling causes in the wavelet transform uses an H-transform and provides motion estimation and compensation in wavelet domain without requiring an inverse wavelet transform. For encoding, a q-dimensional (e.g., q=2) H-transform is applied in a conventional manner to non-overlapping q×q matrices in a first frame. When determining motion vectors for a second frame, “half-pixel” interpolation of the wavelet data of the first frame determines generates half-pixel data corresponding to q×q space-domain matrices that are offset (e.g., 1 pixel) horizontally and/or vertically from the q×q matrices that were transformed. Motion estimation techniques can then identify object motion by comparing wavelet domain object data in one frame to actual and interpolated wavelet domain data for another frame.