  Despite significant strides in the field of 3D scene editing, current methods
encounter substantial challenge, particularly in preserving 3D consistency in
multi-view editing process. To tackle this challenge, we propose a progressive
3D editing strategy that ensures multi-view consistency via a
Trajectory-Anchored Scheme (TAS) with a dual-branch editing mechanism.
Specifically, TAS facilitates a tightly coupled iterative process between 2D
view editing and 3D updating, preventing error accumulation yielded from
text-to-image process. Additionally, we explore the relationship between
optimization-based methods and reconstruction-based methods, offering a unified
perspective for selecting superior design choice, supporting the rationale
behind the designed TAS. We further present a tuning-free View-Consistent
Attention Control (VCAC) module that leverages cross-view semantic and
geometric reference from the source branch to yield aligned views from the
target branch during the editing of 2D views. To validate the effectiveness of
our method, we analyze 2D examples to demonstrate the improved consistency with
the VCAC module. Further extensive quantitative and qualitative results in
text-guided 3D scene editing indicate that our method achieves superior editing
quality compared to state-of-the-art methods. We will make the complete
codebase publicly available following the conclusion of the double-blind review
process.
