Abstract. A matrix method is considered to construct order-32 simple integer cosine step transform. The one-norm order-32 simple integer transform is proposed and its fast algorithms are developed. Their computational complexity is 4.3 times less as compared with well-known algorithms and 19 time less than in H.265 standard.

Keywords: discrete cosine transform, integer cosine transform, integer cosine step transform, scaled transform, factorization, fast transform, coding gain, compression ratio, video coding, Н.264, H.265, AVS.