User contributions for David

A user with 5,304 edits. Account created on 14 July 2019.
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  • 16:0516:05, 6 March 2024 diff hist +4 3D Representations→‎Reconstruction current
  • 16:0416:04, 6 March 2024 diff hist +535 N Surface ReconstructionCreated page with "Surface reconstruction is the process of converting a point cloud into a mesh. ==Explicit Reconstruction== The idea here is to just connect the points to form triangles. ==Implicit Reconstruction== The idea here is to first estimate a signed distance field from the point cloud and then do marching cubes to generate a mesh. ==Resources== * [https://www.hao-li.com/cs599-ss2015/slides/Lecture06.2.pdf Hao Li lecture slides] * [https://graphics.stanford.edu/papers/zipper/..." current

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  • 19:2419:24, 13 November 2023 diff hist +97 N NVENCCreated page with " Support Matrix:<br> https://developer.nvidia.com/video-encode-and-decode-gpu-support-matrix-new" current

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  • 18:1018:10, 4 October 2023 diff hist −123 Email RoutingNo edit summary
  • 14:3314:33, 4 October 2023 diff hist +661 N IPv6Created page with " ===Local Addresses=== See https://datatracker.ietf.org/doc/html/rfc4193#section-3 The summary is that your subnet is commonly a /64 where the first 8 bits are 0xFD, the next 40 bits are random, and the last 16 bits are a subnet ID of your choosing. The 40 random bits make collisions unlikely. <syntaxhighlight lang="python"> import random prefix = f"{0b11111101:02x}" # 0xfd random_bits = f"{random.getrandbits(40):010x}" # 40 random bits # subnet_id = f"{random.getr..." current

2 October 2023

  • 01:1801:18, 2 October 2023 diff hist +291 N TailscaleCreated page with "Tailscale is an awesome mesh VPN. ==Exit Node== For processing the exit node, Tailscale uses iptables with mask 0xFF0000.<br> This may conflict with other applications such as Calico. [https://github.com/tailscale/tailscale/issues/591 This issue] suggests changing the mask used in Calico."

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  • 06:1106:11, 3 September 2023 diff hist +56 Japan Travel→‎Resources current
  • 06:1006:10, 3 September 2023 diff hist +736 Japan TravelNo edit summary
  • 06:0006:00, 3 September 2023 diff hist +1,011 N Japan TravelCreated page with " ==Tokyo== ===Airports=== First things to do after landing and clearing customs: # Withdraw some yen from an ATM. # Buy an IC card such as Welcome Suica or Passmo Passport. ====Narita==== ;Transportation * The Keisei Skyliner connects to Nippori station and the Keisei Ueno station. ** You can buy tickets at the information desk in the airport for this. ** This has reserved seating and is the fastest way into the Tokyo prefecture. * The Narita Express (N'EX) connects to..."

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  • 04:2804:28, 29 June 2023 diff hist +839 N CompressionCreated page with "Notes on compression ==Lossless== ===Deflate=== This is the compression used by gzip and implemented in the zlib library. Probably the most widely used compression algorithm, it is also commonly used for zip archives. ===LZO=== This focuses on decompression speed. ===LZ4=== Focuses on decompression speed, new and faster than LZO but with worse compression. ===Brotli=== A compression algorithm developed by Google, primarilly to replace gzip in HTTP. It is supported i..." current

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  • 19:1119:11, 8 June 2023 diff hist +22 Kubernetes→‎StatefulSets
  • 19:1019:10, 8 June 2023 diff hist +43 Hashing→‎Perfect Hashing current
  • 19:0319:03, 8 June 2023 diff hist +1,365 N HashingCreated page with "Hashing is a tool to compactly store sparse data (i.e. maps and sets). On average, hashing generally achieves constant-time lookup but can degrade to linear time depending on the data nad the algorithm details. There are two common problems with hashing * Collisions * Cache coherency ==Collision resolution== There are several methods to resolve collisions when implementing hashmaps. Below are some common solutions. Note that in scenarios where performance is of upmost..."

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  • 20:4120:41, 20 February 2023 diff hist +341 N PostfixCreated page with "Postfix is used to send emails on Linux servers.<br> You should set it up so daemons can use mail or sendmail to notify you of issues. See [https://askubuntu.com/questions/1332219/send-email-via-gmail-without-other-mail-server-with-postfix https://askubuntu.com/questions/1332219/send-email-via-gmail-without-other-mail-server-with-postfix]" current

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