What image does Ichabod see when he looks at the farm animals of Baltus Van Tassel?

Image saw an image of himself as a rich man, and married to Van Tassel's daughter. He was imagining the future.

As the enraptured Ichabod fancied all this, and as he rolled his great green eyes over the fat meadowlands, the rich fields of wheat, rye, buckwheat, and Indian corn, and the orchard, burdened with ruddy fruit, which surrounded the warm tenement of Van Tassel, his heart yearned after the damsel who was to inherit these domains, and his imagination expanded with the idea how they might be readily turned into cash, and the money invested in immense tracts of wild land, and shingle palaces in the wilderness. His busy fancy already presented to him the blooming Katrina, with a whole family of children, mounted on the top of a wagon loaded with household trumpery; and he beheld himself bestriding a pacing mare, with a colt at her heels, setting out for Kentucky, Tennessee, or the Lord knows where.