Abstract: The present invention provides a system and method to align and merge differently exposed digital images to create a HDR image. In the present system, all the modules starting from the receiving module to fusion module are configured to produce a HDR image with better color purity and sharpness. Each captured image in the system is configured to operate in the HSI color space. The alignment module is configured to align the pixels of each image in a pyramid shaped resolution structure to derive alignment vectors for one or more regional partitions of each image across one or more levels of the pyramid. The system is configured such that, the saturation component in the HSI color space is used to pick the color purity of pixels and intensity channel is used to weigh the sharpness of pixels of each of the differently exposed captured images.

Abstract: The present invention provides a system and method to align and merge differently exposed digital images to create a HDR image. In the present system, all the modules starting from the receiving module to fusion module are configured to produce a HDR image with better colour purity and sharpness. Each captured image in the system is configured to operate in the HSI colour space. The alignment module is configured to align the pixels of each image in a pyramid shaped resolution structure to derive alignment vectors for one or more regional partitions of each image across one or more levels of the pyramid. The system is configured such that, the saturation component in the HSI colour space is used to pick the colour purity of pixels and intensity channel is used to weigh the sharpness of pixels of each of the differently exposed captured images.