An Investigation on Image Compression Using the Trigonometric Bézier Curve with a Shape Parameter

Table 2

Comparison of the BR and PSNR on Lena image.

Algorithm	Maximum allowed error 𝑀	PSNR (dB)	BR (bits/pixels)	Average required time (s)
Quadratic Bézier curve approximation [13]	25	31.249	1.644	11.700
	30	30.577	1.443	12.934
	35	29.757	1.286	13.908
Cubic rational Bézier curve approximation [15]	25	33.282	1.403	13.582
	30	32.897	1.193	13.558
	35	32.561	1.027	13.556
QCT-Bézier curve approximation	25	33.261	1.422	12.692
	30	32.801	1.212	12.824
	35	32.539	1.036	12.830