{" line1", "TestLineDirectives", 1, 3}, {"\nline2", "TestLineDirectives", 2, 1}, {"\nline3 //line File1.go:100", "TestLineDirectives", 3, 1}, // bad line comment, ignored {"\nline4", "TestLineDirectives", 4, 1}, {"\n//line File1.go:100\n line100", "File1.go", 100, 0}, {"\n//line \t :42

用帧间差分法和三帧差分法法提取运动目标