Hi Raghuram,
You can do like this also.
var oBGImage1 = new sap.m.Image({
src: "images/SAPLogo.jpg",
width: "36px",
height: "46px",
mode: sap.m.ImageMode.Background,
backgroundSize: "150px 74px",
backgroundPosition: "-74px -14px"
})
With Regards,
siva.