Digital technology virtual restoration of the colours and textures of polychrome Bodhidharma statue from the Lingyan Temple, Shandong, China

Heritage Science

Table 4 Chromaticity changes before and after virtual restoration at each sampling point

Samples No.	The area represented by the samples	Before restoration			After virtual restoration			ΔE
Samples No.	The area represented by the samples	L*	a*	b*	L*	a*	b*	ΔE
D1-2	Reddish-brown skin areas	25	27	21	31	27	17	7.2
D1-4	Collar, checks on the cassock, and orange-red pedestal areas	70	32	41	55	49	52	25.2
D1-6	Collar red area	64	44	32	49	59	31	23.4
D1-7	Collar embossed painting and gilding area	66	4	39	55	4	21	21.1
D1-8	The pink areas in the clothes inside	72	29	25	61	23	13	18.7
D1-9	The gilding areas of the cuff, the edge of the garment, and the checks on the cassock	56	7	35	64	5	21	16.2
D1-10	Collar blue area and the blue line on the chest	41	5	− 23	27	30	− 64	50.0
D1-11	Pedestal edge black area	9	0	0	13	0	− 1	4.1
D1-12	Pedestal reddish-brown area	10	27	15	54	51	52	62.3
D1-13	The red areas on the right sleeve and the checks on the cassock	51	57	40	49	58	31	11.5
D1-14	Cuff yellow area and clothes surface yellow flowers	80	4	46	87	− 4	62	18.3
D1-15	The green areas of sleeves outside and checks on the cassock	38	− 15	17	46	− 25	11	19.8
D1-17	The white pattern area on the chest	92	1	10	82	0	3	12.2
D1-18	Cassock surface blue-green flowers	71	− 15	6	44	− 22	8	33.8
D1-19	Black cassock	16	− 3	3	16	0	− 1	5.0