1. A method to decode a high dynamic range (HDR) image, the method comprising: parsing an image file comprising a base image and an HDR reconstruction image, wherein the HDR reconstruction image comprises a luma ratio component image and one or more residual chroma component images; and generating an output HDR image using the base image and the HDR reconstruction image, wherein generating the output HDR image further comprises: generating an intermediate HDR image by multiplying the base image with the luma ratio component image; and generating the output HDR image by adding the one or more residual chroma component images to the intermediate HDR image.