https://benjamin.ahlbrand.me/tags/week/WeekHugo Blox Builder (https://hugoblox.com)en-usMon, 15 May 2023 00:00:00 +0000https://benjamin.ahlbrand.me/media/sharing.pnghttps://benjamin.ahlbrand.me/tags/week/https://benjamin.ahlbrand.me/post/2024-12-08-cpu-pathtracer/Mon, 15 May 2023 00:00:00 +0000https://benjamin.ahlbrand.me/post/2024-12-08-cpu-pathtracer/<p>I wrote a monte carlo path tracer based on ray tracing in a weekend series as a stress test for my vector / matrix math library in C++.</p> <p>Here&rsquo;s some raw output:</p> <p> <figure > <div class="flex justify-center "> <div class="w-100" ><img src="https://benjamin.ahlbrand.me/assets/vertopal.com_cpu_path_results.png" alt="raw" loading="lazy" data-zoomable /></div> </div></figure> </p> <p>Here&rsquo;s a basic non-local means denoiser I wrote</p> <p> <figure > <div class="flex justify-center "> <div class="w-100" ><img src="https://benjamin.ahlbrand.me/assets/vertopal.com_cpu_path_results_denoised.png" alt="nlm" loading="lazy" data-zoomable /></div> </div></figure> </p> <p>Then here&rsquo;s the difference visualized:</p> <p> <figure > <div class="flex justify-center "> <div class="w-100" ><img src="https://benjamin.ahlbrand.me/assets/vertopal.com_cpu_path_results_error.png" alt="residual" loading="lazy" data-zoomable /></div> </div></figure> </p>