Mosquito/Block Noise Reducer

The VPC-3 provides noise reduction functionality which targets both mosquito noise and block noise associated with digital compression. Mosquito noise reduction reduces noise which often occurs near edges, due to quantization of DCT coefficients. Block artifact reduction detects and adaptively softens block boundaries frequently visible in regions of low variability. In either case, an advanced algorithm ensures that noise reduction is achieved with minimal undesired loss of detail. Automatic detection of block boundaries means that no prior knowledge of video format or block alignment is required. When combined with the Gaussian noise reduction feature of the VPC-1 Deinterlacer IP core, a complete noise reduction suite is provided to address most types of noise.

The VPC-3 is available with complete Verilog source code, Verilog test bench and bit-accurate C models as part of the license. Integration and programming guidelines are also included backed up by expert technical support.

A VPC-3 reference design is available for standard development kits from Xilinx and Altera for demonstration and evaluation purposes. The design includes a built-in user interface with embedded OSD to simplify access to key features of the IP. In addition to simplifying the evaluation of the VPC-3 IP core, the design also serves as a template for customer application development.