OpenCV

OpenCV (Open Source Computer Vision Library) is written in C/C++, for real time computer vision. It takes advantage of multi-core processing and hardware acceleration. Applications of OpenCV includes egomotion estimation, gesture recognition, facial recognition system, and artificial neural networks.

OpenCV =>3.4.3 / 3.4.4
Operating System / Platform => Windows 64 Bit / ubuntu 16
Compiler => opencv-contrib-python 3.4.4 / 3.4.3 (from pip)

for unknown reason, sample only runs,
if we use cv.reg_MapShift cv.reg_MapperGradShift and cv.reg_MapperPyramid here:

https://github.com/opencv/opencv_contrib/blob/7670ff2c0125504ae99ba3cba12b9d47b18a02bd/modules/reg/samples/reg_shift.py#

Stitching API

Opencv provide a Stitching module/API

Bascially, i would like to be able to rewrite stitching_detailed.cpp in javascript

This includes :

Stitcher class
Features extractors (already implemented in opencv4nodejs)
Estimator

I have a simple regression task (using a LightGBMRegressor) where I want to penalize negative predictions more than positive ones. Is there a way to achieve this with the default regression LightGBM objectives (see https://lightgbm.readthedocs.io/en/latest/Parameters.html)? If not, is it somehow possible to define (many example for default LightGBM model) and pass a custom regression objective?

Apr	MAY	Jun
	31
2021	2022	2023

OpenCV

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Stitching API

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