Tone mapping and tone control integrations for image processing

An image processor, comprising:

• an image capture unit configured to capture an image;
• an image processing unit configured to divide the image into blocks and perform image processing against each of the blocks, wherein, for a given block of the blocks, the image processing unit performs the image processing by:
• separating low frequency information of the given block and high frequency information of the given block;
• performing multiple tone control against the low frequency information of the given block based on a gain curve computed for the given block and based on results of a bilinear interpolation performed between the given block and one or more blocks adjacent to the given block within the image;
• performing local tone mapping against the high frequency information of the given block using an edge preservation filter;
• and
• producing a processed block based on results of the multiple tone control and results of the local tone mapping,
• wherein a processed image is produced based on the processed block and based on other processed blocks produced by the image processing unit.

A method, comprising:

• filtering a block of an image to separate low frequency information of the block and high frequency information of the block;
• processing the low frequency information using multiple tone control and based on a global tone mapping curve;
• processing the high frequency information using local tone mapping;
• and
• producing a processed image using the processed low frequency information and the processed high frequency information.