1. An image processing apparatus comprising: at least one processor configured to execute: an acquisition section that acquires an object image which is an editing object; a feature quantity acquisition section that acquires a feature quantity of a reference image which is referred to when the object image is edited; an adjustment value acquisition section that acquires, from a user, an adjustment value by which a reflection degree is changed, the reflection degree being a degree of reflecting the feature of the reference image on the object image; a feature-reflected image generation section that generates a feature-reflected image which is the object image on which the feature is reflected by using the feature quantity acquired by the feature quantity acquisition section and using the adjustment value acquired by the adjustment value acquisition section; and a display section that displays the reference image and the feature-reflected image together, wherein the adjustment value acquisition section acquires a direction which varies the adjustment value gradually, and wherein the display section displays, with the gradual variation acquired by the adjustment value acquisition section, the reference image with no variation and the feature-reflected image with the gradually-changed reflection degree together.