I'm trying to reproduce a post-effect with unity seen in the answer here.

Chromadepth answer

For the moment I just manage to reproduce the wave effect with a quick edge detection. I tried multiple textures but can't find one that fit do the same effect.

I am using this texture

The result for far.

Shader "Unlit/ChromaDepthEdge" {

Properties
{
    _MainTex ("Texture", 2D) = "white" {}
    _Ramp ("Texture", 2D) = "white" {}
    _Threshold("Threshold", Float) = 0.1
}
SubShader
{
  Pass
  {
      ZTest Always Cull Off ZWrite Off
      CGPROGRAM
      #pragma vertex vert
      #pragma fragment frag
      #pragma target 3.0
      #include "UnityCG.cginc"
        
      struct appdata
      {
          float4 vertex : POSITION;
      };
  
      sampler2D _MainTex;
      sampler2D _Ramp;
      // Request camera depth buffer as a texture.
      // Incurs extra cost in forward rendering, "just there" in deferred.
      sampler2D _CameraDepthTexture;
      float4 _MainTex_TexelSize;
     
            
      float4x4 _InverseViewMatrix;
      
      float _Threshold;
        
      void vert (
          float4 vertex : POSITION,
          out float4 outpos : SV_POSITION)
      {
          outpos = UnityObjectToClipPos(vertex);
      }
  
      fixed4 frag (UNITY_VPOS_TYPE screenPos : VPOS) : SV_Target
      {
          // Convert pixel coordinates into screen UVs.
          float2 uv = screenPos.xy * (_ScreenParams.zw - 1.0f);
          
          //uv.y = (uv.y *-1) + 1;
          // Depending on setup/platform, you may need to invert uv.y
          // Sample depth buffer, linearized into the 0...1 range.
          float depth = Linear01Depth(
                UNITY_SAMPLE_DEPTH(tex2D(_CameraDepthTexture, uv)));   
       
          float2 uvDist = 3 * _MainTex_TexelSize.xy;
          
          float depthUp =  Linear01Depth(UNITY_SAMPLE_DEPTH(tex2D(_CameraDepthTexture, uv + uvDist * float2(0, 1))));   
          float depthDown =  Linear01Depth(UNITY_SAMPLE_DEPTH(tex2D(_CameraDepthTexture, uv + uvDist * float2(0, -1))));   
          float depthLeft =  Linear01Depth(UNITY_SAMPLE_DEPTH(tex2D(_CameraDepthTexture, uv + uvDist * float2(-1, 0))));   
          float depthRight =  Linear01Depth(UNITY_SAMPLE_DEPTH(tex2D(_CameraDepthTexture, uv + uvDist * float2(1, 0))));   

          float mean = ((depthUp - depth) + (depthDown - depth) + (depthLeft - depth) + (depthRight - depth)) / 4;
                                                            
          // Compressing the range, so we get more colour 
          // variation close to the camera.
          depth = saturate(2.0f * depth);
          depth = 1.0f - depth;
          depth *= depth;             
          depth = 1.0f - depth;     
          //return depth;
         
            
          // Use depth value as a lookup into a colour
          // ramp texture of your choosing. 
          fixed4 colour = tex2D(_Ramp, depth * 6 * _Time.y * 4);
           
          return lerp(colour, colour * 6, mean > _Threshold);
      }
      ENDCG
  }

}

}

What did I miss ?

Thanks in advance.