Intelligent Recognition of Time Stamp Characters in Solar Scanned Images from Film

Table 1

Test results of CNN identification.

Character	Total numbers	Recognition errors	Recognition rate	Time cost(s)
0	1000	20	0.980	6.01
1	1000	4	0.996	6.11
2	1000	8	0.992	5.96
3	1000	3	0.997	6.28
4	1000	1	0.999	6.24
5	1000	19	0.981	6.52
6	1000	12	0.988	6.05
7	1000	3	0.997	6.17
8	1000	12	0.988	5.95
9	1000	13	0.987	6.11