BETA OFFSET CONTROL FOR DEBLOCKING FILTERS IN VIDEO CODING

摘要

Techniques are described for providing continuous control of a deblocking filter for a video block using a beta offset parameter. Deblocking filters are defined based on one or more deblocking decisions. Conventionally, a quantization parameter and a beta offset parameter are used to identify a beta parameter (“&bgr;”) value that determines threshold values of the deblocking decisions. The value of the beta offset parameter results in a change or increment of the &bgr; value. For small increments of the &bgr; value, rounding of the threshold values may result in no change and discontinuous control of the deblocking decisions. The techniques include calculating at least one deblocking decision for the deblocking filter according to a threshold value that has been modified based on a multiplier value of the beta offset parameter. The multiplier value applied to the beta offset parameter causes an integer change in the modified threshold value.