나스닥171819

빌드 설치

# Update your package list
sudo apt update
# Install the Boost development libraries
sudo apt install libboost-all-dev

https://www.boost.org/doc/user-guide/getting-started.html

소스 빌드

Failed to build B2 build engine
qwer@DESKTOP-K2NBKJ6:~/boost_1_88_0$ g++ --version
Command 'g++' not found, but can be installed with:
sudo apt install g++
qwer@DESKTOP-K2NBKJ6:~/boost_1_88_0$ sudo apt install build-essential python3 libbz2-dev libz-dev libicu-dev
[sudo] password for qwer:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'zlib1g-dev' instead of 'libz-dev'
python3 is already the newest version (3.12.3-0ubuntu2).
python3 set to manually installed.
The following additional packages will be installed:
  bzip2 bzip2-doc cpp cpp-13 cpp-13-x86-64-linux-gnu cpp-x86-64-linux-gnu dpkg-dev fakeroot g++ g++-13
  g++-13-x86-64-linux-gnu g++-x86-64-linux-gnu gcc gcc-13 gcc-13-base gcc-13-x86-64-linux-gnu gcc-x86-64-linux-gnu
  icu-devtools libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libaom3 libasan8 libatomic1
  libc-dev-bin libc-devtools libc6-dev libcc1-0 libcrypt-dev libde265-0 libdpkg-perl libfakeroot
  libfile-fcntllock-perl libgcc-13-dev libgd3 libgomp1 libheif-plugin-aomdec libheif-plugin-aomenc
  libheif-plugin-libde265 libheif1 libhwasan0 libisl23 libitm1 liblsan0 libmpc3 libquadmath0 libstdc++-13-dev libtsan2
  libubsan1 libxpm4 linux-libc-dev lto-disabled-list make manpages-dev rpcsvc-proto
Suggested packages:
  cpp-doc gcc-13-locales cpp-13-doc debian-keyring g++-multilib g++-13-multilib gcc-13-doc gcc-multilib autoconf
  automake libtool flex bison gdb gcc-doc gcc-13-multilib gdb-x86-64-linux-gnu glibc-doc bzr libgd-tools
  libheif-plugin-x265 libheif-plugin-ffmpegdec libheif-plugin-jpegdec libheif-plugin-jpegenc libheif-plugin-j2kdec
  libheif-plugin-j2kenc libheif-plugin-rav1e libheif-plugin-svtenc icu-doc libstdc++-13-doc make-doc
The following NEW packages will be installed:
  build-essential bzip2 bzip2-doc cpp cpp-13 cpp-13-x86-64-linux-gnu cpp-x86-64-linux-gnu dpkg-dev fakeroot g++ g++-13
  g++-13-x86-64-linux-gnu g++-x86-64-linux-gnu gcc gcc-13 gcc-13-base gcc-13-x86-64-linux-gnu gcc-x86-64-linux-gnu
  icu-devtools libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libaom3 libasan8 libatomic1
  libbz2-dev libc-dev-bin libc-devtools libc6-dev libcc1-0 libcrypt-dev libde265-0 libdpkg-perl libfakeroot
  libfile-fcntllock-perl libgcc-13-dev libgd3 libgomp1 libheif-plugin-aomdec libheif-plugin-aomenc
  libheif-plugin-libde265 libheif1 libhwasan0 libicu-dev libisl23 libitm1 liblsan0 libmpc3 libquadmath0
  libstdc++-13-dev libtsan2 libubsan1 libxpm4 linux-libc-dev lto-disabled-list make manpages-dev rpcsvc-proto
  zlib1g-dev
0 upgraded, 59 newly installed, 0 to remove and 0 not upgraded.
Need to get 84.9 MB of archives.
After this operation, 294 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
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E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
qwer@DESKTOP-K2NBKJ6:~/boost_1_88_0$

 ./bootstrap.sh --with-python=python3

--with-python=python3

./b2

./b2 headers

./b2 install --prefix=/usr/local

https://www.boost.org/doc/user-guide/getting-started.html

dct coefficient python

DCT 계수 디코더/이산 코사인 변환 시각적 설명.ipynb

https://github.com/btlorch/dct-coefficient-decoder/blob/master/discrete_cosine_transform_visual_explanation.ipynb

https://github.com/btlorch/jpeglib/blob/master/examples/improve_dct.ipynb

N=4는 4X4 DCT의 커널인 행렬 C

[[ 0.5 0.5 0.5 0.5 ]

[ 0.6533 0.2706 -0.2706 -0.6533]

[ 0.5 -0.5 -0.5 0.5 ]

[ 0.2706 -0.6533 0.6533 -0.2706]]

https://wikidocs.net/71447

https://www.reddit.com/r/programming/comments/36w26n/great_explanation_of_the_discrete_cosine/

https://github.com/tesfagabir/Digital-Image-Processing/blob/master/03-Implementing-Discrete-Cosine-Transform-Using-Python.ipynb

DCT-Q-IDCT 필터

필터를 다운 받고 설치 한 후 사용

https://www.cithraidt.de/filter/index.html

VirtualDub 최신버전을 사용하면 잘 동작한다.

https://sourceforge.net/projects/virtualdub/

numpy.longdouble'

AI 개요

+2

 

import numpy as np

# longdouble 데이터 타입으로 배열 생성
a = np.array([1.0, 2.0, 3.0], dtype=np.longdouble)
print(a.dtype)  # 출력: dtype('float128') 또는 dtype('float80') (플랫폼에 따라 다름)

# longdouble 타입의 변수 사용
x = np.longdouble(1.234567890123456789)
print(x)

DCT-2D-filter

https://github.com/mieskolainen/DCT-2D-filter

sudo apt update & sudo apt upgrade

하니 

apt list --upgradable 하란다.

하지만 패스

JPEGsnoop: JPEG decoder and detailed analysis

1.8은 컴파일이 잘 안되서 

1.71 에다가 1.8

Registry.cpp , Registry.h 를 복사했다.

https://github.com/ImpulseAdventure/JPEGsnoop/tree/release-1.7.1?tab=readme-ov-file