Methods and apparatuses for image processing

A method to generate a first dynamic range image from a second dynamic range image, the method comprising:

• determining data representing one or more regions of the second dynamic range image containing pixels having values that are outside a first range and inside a second range;
• computing, by a data processing system, a weight distribution from the data representing the one or more regions by blurring the mask to generate the weight distribution;
• and
• generating the first dynamic range image from the second dynamic range image using the weight distribution.

A data processing system to generate a first dynamic range image from a second dynamic range image, the data processing system comprising:

• means for determining data representing one or more regions of the second dynamic range image containing pixels having values that are outside a first range and inside a second range;
• means for computing a weight distribution from the data representing the one or more regions by blurring the data to generate the weight distribution;
• and
• means for generating the first dynamic range image from the second dynamic range image using the weight distribution.

An image capturing device, comprising:

• memory;
• an image sensing device coupled to the memory to generate a plurality of images of a scene with a plurality of exposure durations;
• and
• a processing circuit coupled to the image sensing device, the processing circuit to detect one or more regions in a first image of the plurality of image according to a threshold to generate a mask, the processing circuit to blur the mask to generate a weight distribution, and the processing circuit to blend the first image and a second image of the plurality of images to generate a third image according to the weight distribution.