Smoothing out jagged mesh edge in edit mode

Question

I have a mesh with some jagged edges that need smoothing out without having to do a lot of manual work. It's a zig-zagging mesh and I'm trying to fill out the creases so that there is a somewhat continuous outer edge. The image below is a screenshot of the mesh, with the red line marking where the mesh should follow.

In other words, I'd want to fill in those jagged creases with edges like so:

Searching around, most solutions are for making blocking meshes look smooth via shaders, but what I'm trying to do is a little more crude.

One question closer to mine had a pretty good solution: How do you make a jagged circle edge smooth? Here @ChristopherBennett suggested using Loop Tools.

Gave that a shot but it doesn't look like it works very well. It misses some of the inner vertices, even when I delete the faces underneath (because I thought it was maybe confusing the tool)

Was thinking about smoothing out the outer edge and then lofting the top and bottom.

Answer 1

In this case, You could select chunks of your mesh in Edit Mode, and invoke (Header Menu) > Mesh > Convex Hull, followed by X > Limited Dissolve:

But you lose some edges.

One other possible approach, if you need to retopologise, or Convex Hull is not a good starting-point: somehow make parts of the mesh available to the shipped add-on Loop Tools, and its Curve operator. (Much Slower)

In Edit mode, duplicate off a region with a profile of interest:

and..

• F fill, or X > Limited dissolve, convert it to a single non-planar Ngon
• To make it available to Loop Tools > Curve, at least, extrude it. This one is inset, too. Select the projecting vertices. A good sign of acceptable topology is that this can be achieved by selecting the first two vertices, and the rest, incrementally, by using CtrlShiftNumpad +
• Invoke Loop Tools > Curve on that loop.
• Duplicate the loop, or delete the other vertices.

Now, with Snap set to 'To: Vertex' and 'With: Active', snap the fixed profile back on to the original model. Repeat the process with other profiles.

Then you can (Edge Menu) > Bridge Edge Loops reproduce the shapes with better topology.