11. A computer system, comprising: a processor; and a memory having stored thereon instructions that are executable to cause the computer system to perform operations comprising: identifying one or more distortion categories for one or more image frames, wherein the identifying is based on distorted image statistics for the one or more image frames; and determining a quality of the one or more image frames based on the identified one or more distortion categories by assessing one or more feature scores corresponding to one or more feature vectors of the one or more image frames, and mapping from a multidimensional space to a quality score, wherein the multidimensional space is defined by ranges for the one or more feature scores; wherein the identifying and the determining do not use reference image frames for the one or more image frames.
11. A computer system, comprising: a processor; and a memory having stored thereon instructions that are executable to cause the computer system to perform operations comprising: identifying one or more distortion categories for one or more image frames, wherein the identifying is based on distorted image statistics for the one or more image frames; and determining a quality of the one or more image frames based on the identified one or more distortion categories by assessing one or more feature scores corresponding to one or more feature vectors of the one or more image frames, and mapping from a multidimensional space to a quality score, wherein the multidimensional space is defined by ranges for the one or more feature scores; wherein the identifying and the determining do not use reference image frames for the one or more image frames. 15. The computer system of claim 11 , wherein the operations further comprise generating the distorted image statistics for the one or more image frames, wherein generating the distorted image statistics includes applying a wavelet transformation to the one or more image frames.