Method And Apparatus For Providing A Variable Filter Size For Providing Image Effects

A de-noising circuit for filtering image data, comprising:

• a buffer for storing a portion of the image data;
• detail detection circuitry configured to determine a filter size to be applied to the portion of the image data;
• a filter size block configured to average pixel values according to the filter size;
• and
• selection circuitry configured to select between the average of the pixel values and values of the image data from the buffer based on a selection signal from the detail detection circuitry.

A portable device, comprising:

• image capture circuitry;
• a graphics processor;
• and
• de-noising circuitry in communication with the image capture circuitry and the graphics processor, the de-noising circuitry includes,
• a line buffer configured to receive a portion of captured image data from the image capture circuitry;
• detail detection circuitry configured to calculate differences between a reference pixel value of the portion of captured image data and a plurality of remainder pixel values within the portion of captured image data, and configured to select a filter size;
• and
• a filter size block configured to apply a blur level to the pixel values of the portion of captured image data through the filter size.