System and method for maintaining maximum input rate while up-scaling an image vertically

摘要

An example embodiment provides a resizer in an image processing system. The resizer includes a receiving module that receives pixel data representative of an image. A triple line buffer is coupled to the receiving module that stores the pixel data in response to a write control signal from control logic. The triple line buffer is operated as a circular buffer. The resizer further includes a resizer core that reads pixel data from the triple line buffer in response to a read control signal from the control logic. The pixel data is replicated to up-scale the image vertically according to a vertical up-scale ratio such that the resizer achieves a maximum input data rate and also eliminates an overflow condition in the resizer. The vertical up-scale ratio is a fraction.

主权项

1. A resizer in an image processing system comprising:
a triple line buffer that stores pixel data representative of an image in response to a write control signal from a control logic, the triple line buffer operating as a circular buffer; a resizer core that reads pixel data from the triple line buffer in response to a read control signal from the control logic, the pixel data being replicated to up-scale the image vertically according to a vertical up-scale ratio, the vertical up-scale ratio being a fraction, such that the resizer achieves a maximum input data rate and also eliminates an overflow condition in the resizer; and a de-multiplexer that receives the write control signal and pixel data, and that generates a de-multiplexer output which is provided selectively to each line buffer of the triple line buffer.