1. A method for multi-exposure imaging, comprising: with an image sensor, capturing a first image having a first exposure time; with the image sensor, capturing a second image having a second exposure time that is less than the first exposure time; with an image processor, processing the first and second images to produce a processed image, wherein processing the first and second images comprises adding pixel signals P 1 from the first image to pixel signals P 2 from the second image to produce summed pixel signals P lo ; with the image processor, linearizing the summed pixel signals P lo to produce pixel signals P in the processed image, wherein linearizing the summed pixel signals P lo comprises scaling the summed pixel signals P lo that are above a knee point, wherein scaling the summed pixel signals P lo that are above a knee point comprises scaling the summed pixel signals P lo that are above a knee point by a factor, wherein the factor comprises an exposure ratio g plus one and wherein the exposure ratio g comprises the first exposure time divided by the second exposure time.