MOTION BLUR-FREE CAPTURE OF LOW LIGHT HIGH DYNAMIC RANGE IMAGES

摘要

Embodiments of the disclosure compensate for global movement and in-scene movement during image capture by a computing device. A sequence of images is accessed by the computing device. Accelerometer readings and/or gyroscope readings corresponding to each of the accessed images are used by the computing device for calculating global movement among each of the accessed images. Each of the accessed images is re-aligned based on the calculated global movement. The re-aligned images are combined into a single output image. The intensity values of each of the pixels in the re-aligned images are compared with the intensity values of each of the corresponding pixels in a reference image. Based on the comparison, the intensity values associated with the pixels in the re-aligned images are selectively accumulated to generate an output image that is blur-free, low-light enhanced, and high dynamic range.

主权项

1. A system for compensating for motion and saturation during image capture by a mobile computing device, said system comprising:
an image sensor; a gyroscope; a memory area storing a plurality of images captured by the image sensor, the memory area further storing readings from the gyroscope, the readings corresponding to each of the plurality of images; and a processor programmed to:
calculate global movement among the plurality of images based on the readings;re-align each of the plurality of images based on the calculated global movement;compare intensity values associated with pixels in the re-aligned images to expected intensity values for the pixels, the expected intensity values being derived from a reference image in the plurality of images;selectively accumulate the intensity values associated with the pixels in the re-aligned images based on the comparison; andgenerate an output image using the selectively accumulated intensity values.