Canon SX410 IS has a 20.0MP 1/2.3" (6.17 x 4.55 mm ) sized CCD sensor and features DIGIC 4+ processor. On the other hand, Sony a5100 has a 24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz X processor.
Below you can see the SX410 IS and a5100 sensor size comparison.
As seen above, Sony a5100 has a 13.1x Larger sensor area than Canon SX410 IS. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.