摘要:
A system comprising structures connected to the rider of human-powered vehicles improves the force a rider may apply to the vehicle. The elements are primarily connected to the lower body and legs of the rider, with attachment to the rider's shoes, whereby a two-dimensional four-bar linkage is formed. Use of the system may permit a rider to go faster or farther with less effort. An optional novel shoe may be used with or without the other elements of the system.
摘要:
A method and system are provided in which a processor, such as a video processor, may determine a flatness value for a current video picture and may adjust a mosquito noise filtering of a subsequent video picture based on the determined flatness value. The flatness value may be determined within a predetermined region of the current video picture, which may be dynamically modified by the processor. The flatness value may be associated with the presence of analog noise in the current video picture, and may be determined based on horizontal and vertical variance values determined for one or more portions of the current video picture. The processor may adjust a mosquito noise strength value of the current video picture based on the determined flatness value and may adjust the mosquito noise filtering of the subsequent video picture based on the adjusted mosquito noise strength value of the current video picture.
摘要:
Methods and systems for processing chroma signals are disclosed. Aspects of one method may include compensating a modulated chroma signal for distortions due to audio trap filtering. The compensated chroma signal may be demodulated to generate U and V chroma signals. The U and V chroma signals may be low pass filtered, and then YC aligned. YC alignment may comprise correcting portions of the U and V chroma signals based on the luma signal. The correction may be based on, for example, correlation between the U and V chroma signals and the Y luma signal, and/or energy level of the Y luma signal. The corrected U and V chroma signals may be chroma sharpened, where a gain parameter may be changed to change a transition slope for the U and V chroma signals. The chroma sharpened signals may also be clamped to reduce overshoot and undershoot.
摘要:
Embodiments for video content source resolution detection are provided. Embodiments enable systems and methods that measure video content source resolution and that provide image-by-image source scale factor measurements to picture quality (PQ) processing modules. With the source scale factor information. PQ processing modules can be adapted dynamically (on a picture-by-picture basis) according to the source scale factor information for better picture quality enhancement. In addition, embodiments provide source resolution detection that is minimally affected by video coding artifacts and superimposed content (e.g., graphics).
摘要:
A method and system for reducing the appearance of jaggies when deinterlacing moving edges in a video processing system are provided. The method may comprise detecting the direction of an angled edge in an interlaced video image to determine a filtering direction to be used for approximating absent pixels in deinterlacing the interlaced video. In detecting the direction of the angled edge, a group of windows of different sizes may be used to look at the edge, where a missing pixel is the center of each of the windows. Detecting the direction of the edge, and therefore the direction of filtering, may comprise: determining the angle associated with the edge, determining the strength of the edge, examining the pixels surrounding the absent pixel, and adjusting the first angle measure and the second angle measure based on the pattern of the surrounding pixels.
摘要:
Presented herein are a system and method for sharpening edges in a region. In one embodiment, there is presented a method for sharpening edges. The method comprises measuring differences between at least a value associated with a first pixel and a value associated with a second pixel of a plurality of pixels; and applying a sharpening mask to the plurality of pixels, wherein the sharpening mask is a function of at least one of the measured differences, a first value associated with any one of the plurality of pixels, and a second value associated with any other of the pixels, thereby resulting in sharpened pixels.
摘要:
Systems and methods are disclosed for recovering a clock or time reference for A/V systems. One method comprises receiving at least one input time reference generated using a first clock and generating, using a second clock asynchronous to the first clock, at least one time reference value representative of the at least one input time reference. The method further comprises outputting the generated time reference value used by the A/V system.
摘要:
Presented herein are systems and methods for efficiently storing macroblocks in DRAM. The macroblocks are stored contiguously allowing each macroblock to be written and overwritten in a single write transaction. Additionally, in one embodiment, as many as five macroblocks can be written or overwritten in a single write transaction.
摘要:
Herein described is a system and method for improving the appearance of video by generating an improved 4:2:2 chroma. The system comprises a 4:2:2 to 4:2:0 chroma regenerator that regenerates 4:2:0 chroma given a received 4:2:2 chroma, and a 4:2:0 to 4:2:2 chroma generator that weaves and interpolates the regenerated 4:2:0 chroma to yield an adjusted 4:2:2 chroma. The system further comprises a blending system used for blending the adjusted 4:2:2 chroma with the received 4:2:2 chroma based on a control input provided by a motion indication signal. The method comprises regenerating a 4:2:0 chroma from a received 4:2:2 chroma using an algorithm. The method further comprises generating an adjusted 4:2:2 chroma using the regenerated 4:2:0 chroma using another algorithm. The method further comprises blending the adjusted 4:2:2 chroma with the received 4:2:2 chroma to generate an improved 4:2:2 chroma.
摘要:
Aspects of a system and method for processing video data may comprise, for each line of a field of an image, generating noise based on a current seed, inserting the generated noise in a current line of the field, and generating a new seed for processing a subsequent line of the field by shifting the current seed. The current seed may be used to generate a random number and the generated noise may be produced using this generated random number.