Yingjun YingGwan

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Focusing

Ph.D. student

polyfjord / batch_reconstruct.bat

Created August 3, 2025 10:51

Batch script for automated photogrammetry tracking workflow

	:: ================================================================
	:: BATCH SCRIPT FOR AUTOMATED PHOTOGRAMMETRY TRACKING WORKFLOW
	:: By polyfjord - https://youtube.com/polyfjord
	:: ================================================================
	:: USAGE
	:: • Double-click this .bat or run it from a command prompt.
	:: • Frames are extracted, features matched, and a sparse
	:: reconstruction is produced automatically.
	:: • Videos that have already been processed are skipped on
	:: subsequent runs.

YingGwan / torch_jacobian.py

Created November 26, 2022 11:08 — forked from sbarratt/torch_jacobian.py

Get the jacobian of a vector-valued function that takes batch inputs, in pytorch.

	def get_jacobian(net, x, noutputs):
	x = x.squeeze()
	n = x.size()[0]
	x = x.repeat(noutputs, 1)
	x.requires_grad_(True)
	y = net(x)
	y.backward(torch.eye(noutputs))
	return x.grad.data

YingGwan / openmesh-python-cheat-sheet.py

Created April 10, 2021 06:28 — forked from zishun/openmesh-python-cheat-sheet.py

OpenMesh Python cheat sheet https://www.graphics.rwth-aachen.de:9000/OpenMesh/openmesh-python

	# OpenMesh-Python Cheat Sheet
	'''
	documentation: https://openmesh-python.readthedocs.io/en/latest/
	OpenMesh-Python official repository:
	https://www.graphics.rwth-aachen.de:9000/OpenMesh/openmesh-python
	C++ documentation:
	https://www.openmesh.org/media/Documentations/OpenMesh-Doc-Latest/a04099.html
	'''
	import openmesh
	import numpy as np

roman-smirnov / eigen_ransac.cpp

Last active December 15, 2022 17:24

Usage of Eigen library with PCL PointCloud (PCL uses Eigen::Matrix as its representation for point clouds under the hood )

	template<typename PointT>
	std::pair<typename pcl::PointCloud<PointT>::Ptr, typename pcl::PointCloud<PointT>::Ptr>
	ProcessPointClouds<PointT>::SegmentPlane( typename pcl::PointCloud<PointT>::Ptr cloud, int maxIterations, float distanceThreshold) {

	// Time segmentation process
	auto startTime = std::chrono::steady_clock::now();

	// downsample input point cloud
	auto cloud_ds = DownSample(cloud, 1.0);

zishun / openmesh-python-cheat-sheet.py

Last active December 5, 2024 05:47

OpenMesh Python cheat sheet https://openmesh-python.readthedocs.io/en/latest/

	# OpenMesh-Python Cheat Sheet
	'''
	documentation: https://openmesh-python.readthedocs.io/en/latest/
	OpenMesh-Python official repository:
	https://www.graphics.rwth-aachen.de:9000/OpenMesh/openmesh-python
	C++ documentation:
	https://www.openmesh.org/media/Documentations/OpenMesh-Doc-Latest/a04099.html

	Installation:
	* pip install openmesh # https://pypi.org/project/openmesh/

sbarratt / torch_jacobian.py

Created May 9, 2019 19:40

Get the jacobian of a vector-valued function that takes batch inputs, in pytorch.

	def get_jacobian(net, x, noutputs):
	x = x.squeeze()
	n = x.size()[0]
	x = x.repeat(noutputs, 1)
	x.requires_grad_(True)
	y = net(x)
	y.backward(torch.eye(noutputs))
	return x.grad.data

miguelmota / uint8_to_hex.cpp

Last active May 19, 2025 02:10

C++ uint8_t to hex string

	#include <sstream>
	#include <iostream>
	#include <iomanip>

	std::string uint8_to_hex_string(const uint8_t *v, const size_t s) {
	std::stringstream ss;

	ss << std::hex << std::setfill('0');

	for (int i = 0; i < s; i++) {