  This paper introduces a new multiplane CGH computation method to reconstruct
artefact-free high-quality holograms with natural-looking defocus blur. Our
method introduces a new targeting scheme and a new loss function. While the
targeting scheme accounts for defocused parts of the scene at each depth plane,
the new loss function analyzes focused and defocused parts separately in
reconstructed images. Our method support phase-only CGH calculations using
various iterative (e.g., Gerchberg-Saxton, Gradient Descent) and non-iterative
(e.g., Double Phase) CGH techniques. We achieve our best image quality using a
modified gradient descent-based optimization recipe where we introduce a
constraint inspired by the double phase method. We validate our method
experimentally using our proof-of-concept holographic display, comparing
various algorithms, including multi-depth scenes with sparse and dense
contents.
