패키지를 삭제했는데 바로 재설치가 되서

캐시되었다는 말을 검색해보니 cache purge를 통해 완전히 날리고 설치할수 있다고 한다.

 

해보니 확실히 처음부터 하긴 한다.

$ time CMAKE_BUILD_PARALLEL_LEVEL=3 pip3 uninstall --break-system-packages -v dlibFound existing installation: dlib 20.0.0
Uninstalling dlib-20.0.0:
  Would remove:
    /home/minimonk/.local/lib/python3.12/site-packages/_dlib_pybind11.cpython-312-aarch64-linux-gnu.so
    /home/minimonk/.local/lib/python3.12/site-packages/dlib-20.0.0.dist-info/INSTALLER
    /home/minimonk/.local/lib/python3.12/site-packages/dlib-20.0.0.dist-info/METADATA
    /home/minimonk/.local/lib/python3.12/site-packages/dlib-20.0.0.dist-info/RECORD
    /home/minimonk/.local/lib/python3.12/site-packages/dlib-20.0.0.dist-info/WHEEL
    /home/minimonk/.local/lib/python3.12/site-packages/dlib-20.0.0.dist-info/licenses/LICENSE.txt
    /home/minimonk/.local/lib/python3.12/site-packages/dlib-20.0.0.dist-info/top_level.txt
    /home/minimonk/.local/lib/python3.12/site-packages/dlib/__init__.py
    /home/minimonk/.local/lib/python3.12/site-packages/dlib/__pycache__/__init__.cpython-312.pyc
  Will actually move:
    /home/minimonk/.local/lib/python3.12/site-packages/_dlib_pybind11.cpython-312-aarch64-linux-gnu.so
    /home/minimonk/.local/lib/python3.12/site-packages/dlib-20.0.0.dist-info/
    /home/minimonk/.local/lib/python3.12/site-packages/dlib/
Proceed (Y/n)? y
  Removing file or directory /home/minimonk/.local/lib/python3.12/site-packages/_dlib_pybind11.cpython-312-aarch64-linux-gnu.so
  Removing file or directory /home/minimonk/.local/lib/python3.12/site-packages/dlib-20.0.0.dist-info/
  Removing file or directory /home/minimonk/.local/lib/python3.12/site-packages/dlib/
  Successfully uninstalled dlib-20.0.0

real    0m4.584s
user    0m2.585s
sys     0m0.381s

$ time CMAKE_BUILD_PARALLEL_LEVEL=3 pip3 install --break-system-packages -v dlib
Using pip 24.0 from /usr/lib/python3/dist-packages/pip (python 3.12)
Defaulting to user installation because normal site-packages is not writeable
Collecting dlib
  Using cached dlib-20.0.0-cp312-cp312-linux_aarch64.whl
Installing collected packages: dlib
Successfully installed dlib-20.0.0

real    0m4.876s
user    0m4.363s
sys     0m0.347s


pip3 cache purge
Files removed: 54

 

[링크 : https://ufris.tistory.com/61]

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pip로 설치되는 녀석중 빌드가 필요한 녀석이 있는데

dlib가 원인을 알수 없으나(?) odroid-c2 / armbian 에서 1코어만 빌드하지만

nxp imx8mp evk 에서는 3코어로 빌드해서 어떤 옵션을 주어야 되는지

웬만한건 다 검색하고 해봐도 안되서 cmake 환경변수로 찾아보니 먼가 나왔고 시도하니 된다!

 

$ pip3 install  --break-system-packages -v dlib
  Invoking CMake build: 'cmake --build . --config Release -- -j1'
  [  1%] Building CXX object dlib_build/CMakeFiles/dlib.dir/base64/base64_kernel_1.cpp.o

 

CMAKE_BUILD_PARALLEL_LEVEL=4 pip3 install  --break-system-packages -v dlib
  Invoking CMake build: 'cmake --build . --config Release -- -j4'
  [  3%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bit_stream/bit_stream_kernel_1.cpp.o
  [  3%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bigint/bigint_kernel_2.cpp.o
  [  2%] Building CXX object dlib_build/CMakeFiles/dlib.dir/bigint/bigint_kernel_1.cpp.o

[링크 : https://cmake.org/cmake/help/latest/envvar/CMAKE_BUILD_PARALLEL_LEVEL.html#cmake-build-parallel-level]

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문득 python을 빌드할때 어떤 옵션을 주고 했을까 궁금해서 찾아보는 중

import sysconfig
print(sysconfig.get_config_vars())

[링크 : https://stackoverflow.com/questions/10192758/how-to-get-the-list-of-options-that-python-was-compiled-with]

 

online python object beautifier로 이쁘게~

ubuntu 22.04 LTS desktop 64bit / Python 3.10.12

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    "exec_prefix": "/usr",
    "py_version": "3.10.12",
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    "TESTTIMEOUT": 1200,
    "TEST_MODULES": "yes",
    "THREAD_STACK_SIZE": 0,
    "TIMEMODULE_LIB": 0,
    "TIME_WITH_SYS_TIME": 1,
    "TM_IN_SYS_TIME": 0,
    "TZPATH": "/usr/share/zoneinfo:/usr/lib/zoneinfo:/usr/share/lib/zoneinfo:/etc/zoneinfo",
    "UNICODE_DEPS": "\\",
    "UNIVERSALSDK": "",
    "UPDATE_FILE": "../Tools/scripts/update_file.py",
    "USE_COMPUTED_GOTOS": 1,
    "VERSION": "3.10",
    "VPATH": "..",
    "WHEEL_PKG_DIR": "/usr/share/python-wheels/",
    "WINDOW_HAS_FLAGS": 1,
    "WITH_DECIMAL_CONTEXTVAR": 1,
    "WITH_DOC_STRINGS": 1,
    "WITH_DTRACE": 1,
    "WITH_DYLD": 0,
    "WITH_EDITLINE": 0,
    "WITH_LIBINTL": 0,
    "WITH_NEXT_FRAMEWORK": 0,
    "WITH_PYMALLOC": 1,
    "WITH_VALGRIND": 0,
    "X87_DOUBLE_ROUNDING": 0,
    "XMLLIBSUBDIRS": "xml xml/dom xml/etree xml/parsers xml/sax",
    "abs_builddir": "/build/python3.10-rtDYKr/python3.10-3.10.12/build-shared",
    "abs_srcdir": "/build/python3.10-rtDYKr/python3.10-3.10.12/build-shared/..",
    "datarootdir": "/usr/share",
    "srcdir": "/usr/lib/python3.10/config-3.10-x86_64-linux-gnu",
    "SO": ".cpython-310-x86_64-linux-gnu.so",
    "userbase": "/home/falinux/.local",
    "multiarchsubdir": "/x86_64-linux-gnu",
}

 

 대충검색해봐도 아키텍쳐 설정은 없는데 SSE, MMX, AVX 관련 설정은 없는 것 같고

-march=cpu-type
Generate instructions for the machine type cpu-type. In contrast to -mtune=cpu-type, which merely tunes the generated code for the specified cpu-type, -march=cpu-type allows GCC to generate code that may not run at all on processors other than the one indicated. Specifying -march=cpu-type implies -mtune=cpu-type, except where noted otherwise.

The choices for cpu-type are:

‘native’
This selects the CPU to generate code for at compilation time by determining the processor type of the compiling machine. Using -march=native enables all instruction subsets supported by the local machine (hence the result might not run on different machines). Using -mtune=native produces code optimized for the local machine under the constraints of the selected instruction set.

‘x86-64’
A generic CPU with 64-bit extensions, MMX, SSE, SSE2, and FXSR instruction set support.

[링크 : https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html]

 

그렇다고 해서 -O2 까지만 보이니 vectorization은 지원안할꺼 같고...

Vectorization in GCC is enabled at -O3. That's why at -O0, you see only the ordinary scalar SSE2 instructions (movsd, addsd, etc). 

[링크 : https://stackoverflow.com/questions/7919304/gcc-sse-code-optimization]

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테스트 해보니 haar 보다 프레임은 안나오고(한 10프레임?)

cpu 점유율은 1개 조지지만, 전체 로드율은 낮은 듯

 

[링크 : https://github.com/ageitgey/face_recognition]

     [링크 : https://wikidocs.net/227902]

[링크 : https://dlib.net/]

 

haar cascade

[링크 : https://bkshin.tistory.com/entry/컴퓨터-비전-1-하르-캐스케이드-얼굴-검출-Haar-Cascade-Face-Detection]



face_recognition 패키지

import cv2
import face_recognition

webcam = cv2.VideoCapture(0)

if not webcam.isOpened():
    print("Could not open webcam")
    exit()

while webcam.isOpened():
    status, frame = webcam.read()

    if status:
        face_locations = face_recognition.face_locations(frame)
        print(face_locations)
        if len(face_locations) > 0:
            for iter in face_locations:
                cv2.rectangle(frame, (iter[1], iter[0]), (iter[3], iter[2]), (0,255,0), 2)
        cv2.imshow("test", frame)

    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

webcam.release()
cv2.destroyAllWindows()

 

opencv2 / haar cascade

import cv2
import time

dirname = '/home/falinux/.local/lib/python3.10/site-packages/cv2/data/'

face_cascade = cv2.CascadeClassifier(dirname + 'haarcascade_frontalface_default.xml')
eye_cascade = cv2.CascadeClassifier(dirname + 'haarcascade_eye.xml')

cam = cv2.VideoCapture(0)
# cam.set(3, 160) # CV_CAP_PROP_FRAME_WIDTH
# cam.set(4, 120) # CV_CAP_PROP_FRAME_HEIGHT
# cam.set(5, 20) # CV_CAP_PROP_FPS
# print(cam.get(3))
# print(cam.get(4))
# print(cam.get(5))

while True:
 ret_val, img = cam.read()
 gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
 
 faces = face_cascade.detectMultiScale(gray, 1.05, 5)
 print(faces)
 for (x, y, w, h) in faces:
  img = cv2.rectangle(img, (x, y), (x+w, y+h), (255, 0, 0), 2)
  roi_gray = gray[y:y+h, x:x+w]
  roi_color = img[y:y+h, x:x+w]
  eyes = eye_cascade.detectMultiScale(roi_gray)
  for (ex, ey, ew, eh) in eyes:
   cv2.rectangle(roi_color, (ex, ey), (ex+ew, ey+eh), (0, 255, 0), 2)

 time.sleep(0.15)
 cv2.imshow("Cam Viewer", img)
#  cv2.imshow("Cam Viewer gray", gray)
 if cv2.waitKey(1) == 27:
     break

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gpt 에서 c로 짠 코드를 python으로 바꾸어 달라니 희한한(?) 문법이 보여 검색해보니

패킹/언패킹이라는 모듈인 듯.

3f 하면 float 3개 인것 같은데

gpt에서는 왜 3f3f3f 이런식으로 했을까 걍 9f 하면 되지 않나 -ㅁ-?

 

 

[링크 : https://docs.python.org/ko/3/library/struct.html]

[링크 : https://plummmm.tistory.com/176]

Posted by 구차니

창을 figure라고 하는 것 같은데

openCV는 창을 명시하고 그릴 데이터를 지정한다면

openGL은 선택을 하고 그리는 거라 순서가 필요한데

matplotlib은 openGL 처럼 그릴곳을 선택하고 그리는 컨셉을 사용한 듯.

 

>>> plt.ion() # 인터랙티브모드 전환
<matplotlib.pyplot._IonContext object at 0x71521b249b40>
>>> plt.figure(1) # 여기서 Figure 1 이라는 창이 열림
<Figure size 640x480 with 0 Axes>
>>> plt.plot([1,2,3]) # Figure 1 창에 그래프 그려짐
[<matplotlib.lines.Line2D object at 0x7152194aead0>]
>>> plt.figure(2) # 여기서 Figure 2 이라는 창이 열림
<Figure size 640x480 with 0 Axes>
>>> plt.plot([2,3,4,5]) # Figure 2 창에 그래프 그려짐
[<matplotlib.lines.Line2D object at 0x71521a9c2410>]
>>> plt.figure(1) # UI 상으로 변동은 없으나 Figure 1 창에 그리도록 선택
<Figure size 640x480 with 1 Axes>
>>> plt.plot([2,3,4,5]) # Figure 1 창에 추가로 그려짐
[<matplotlib.lines.Line2D object at 0x71521a9eca30>]

[링크 : https://matplotlib.org/stable/gallery/subplots_axes_and_figures/multiple_figs_demo.html]

 

하나의 창 안에서 나누는건 subplot 인듯

[링크 : https://stackoverflow.com/questions/41210823/display-multiple-images-in-subplots]

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subplot을 생성하고 해도 되고

plt.plot() 으로 바로 한 것에 plt.cla() 해도 된다.

 

>>> fig, ax = plt.subplots()
>>> ax.plot([0,1,2,3,4,5])

>>> ax.clf()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'AxesSubplot' object has no attribute 'clf'. Did you mean: 'cla'?

>>> ax.cla()

[링크 : https://m.blog.naver.com/hsy2569/221814138095]

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linux 에서는 pulseaudio 쓰는 라이브러리가 유리하겠지?

[링크 : https://pypi.org/project/SoundCard/]

[링크 : https://soundcard.readthedocs.io/en/latest/]

 

Posted by 구차니

chatGPT 님 가라사대

재생 예제, 녹음 + fft 분석

import numpy as np
import sounddevice as sd

# 파라미터 설정
duration = 3  # 재생할 시간(초)
sampling_freq = 44100  # 샘플링 주파수 (Hz)
frequency = 440  # sine 파의 주파수 (Hz)

# 시간 배열 생성
t = np.linspace(0, duration, int(sampling_freq * duration), endpoint=False)

# sine 파 생성
sine_wave = np.sin(2 * np.pi * frequency * t)

# 사운드 재생
sd.play(sine_wave, samplerate=sampling_freq)
sd.wait()  # 재생이 끝날 때까지 대기
import numpy as np
import matplotlib.pyplot as plt
import sounddevice as sd
from scipy.fft import fft

# 녹음 파라미터 설정
duration = 5  # 녹음 시간 (초)
sampling_freq = 44100  # 샘플링 주파수 (Hz)

# 녹음 시작
print("녹음을 시작합니다...")
recorded_audio = sd.rec(int(duration * sampling_freq), samplerate=sampling_freq, channels=1)
sd.wait()  # 녹음이 끝날 때까지 대기
print("녹음이 완료되었습니다.")

# FFT를 위한 주파수 영역 생성
freq_axis = np.fft.fftfreq(len(recorded_audio), d=1/sampling_freq)

# FFT 계산
audio_fft = fft(recorded_audio.flatten())

# FFT 결과 그래프 표시
plt.figure(figsize=(10, 4))
plt.plot(freq_axis[:len(freq_axis)//2], np.abs(audio_fft)[:len(freq_axis)//2])
plt.title("FFT 분석 결과")
plt.xlabel("주파수 (Hz)")
plt.ylabel("Magnitude")
plt.grid(True)
plt.show()

[링크 : https://pypi.org/project/sounddevice/]

 

Assuming you have a NumPy array named myarray holding audio data with a sampling frequency of fs (in the most cases this will be 44100 or 48000 frames per second), you can play it back with play():
sd.play(myarray, fs)

[링크 : https://python-sounddevice.readthedocs.io/en/0.4.6/usage.html#playback]

 

duration = 10.5  # seconds
myrecording = sd.rec(int(duration * fs), samplerate=fs, channels=2)

[링크 : https://python-sounddevice.readthedocs.io/en/0.4.6/usage.html#recording]

 

[링크 : https://python-sounddevice.readthedocs.io/en/0.4.6/]

 

+

반복 재생

import soundfile as sf
import sounddevice as sd

weight = 1.4

data, fs = sf.read('sound.wav')
sd.play(data * weight, fs,loop=True)
sd.stop()

[링크 : https://stackoverflow.com/questions/47606214/stop-the-loop-in-sounddevice-audio-output]

Posted by 구차니

python 실행하기 위한 명령어 줄, 물론 pip 로 패키지도 없어서 그냥 깡통 python 상태

$ docker run --rm -it python python

[링크 : https://seorenn.github.io/note/docker-development-environment.html]

 

docker 로 장치연결해주기

docker run -ti -v /tmp/.X11-unix/:/tmp/.X11-unix --env QT_X11_NO_MITSHM=1 --device=/dev/video0:/dev/video0 -e DISPLAY=$DISPLAY --name test pytorch/pytorch:1.12.1-cuda11.3-cudnn8-devel /bin/bash

[링크 : https://shuka.tistory.com/68]

[링크 : https://blog.naver.com/cheeryun/222383212241]

 

$ docker run --rm -it python bash
# pip install opencv-python

[링크 : https://pypi.org/project/opencv-python/]

 

아래는 테스트 필요 + docker 내에서 해야하나 찾아보는 중

$ sudo apt install libgl1-mesa-glx libglib2.0-0

[링크 : https://yuevelyne.tistory.com/entry/OpenCV-ImportError-libGLso1-cannot-open-shared-object-file-No-such-file-or-directory]

 

wayland 예제 검색.. 

$ docker run -e XDG_RUNTIME_DIR=/tmp \
           -e WAYLAND_DISPLAY=$WAYLAND_DISPLAY \
           -v $XDG_RUNTIME_DIR/$WAYLAND_DISPLAY:/tmp/$WAYLAND_DISPLAY  \
           --user=$(id -u):$(id -g) \
           imagename waylandapplication


[링크 : https://unix.stackexchange.com/questions/330366/]

 

ubuntu 22.04 인데 안된다. ㅠㅠ

Qt 쪽 변수를 넘겨줘야 하나?

>>> cv2.imshow("test",a)
qt.qpa.xcb: could not connect to display 
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/usr/local/lib/python3.12/site-packages/cv2/qt/plugins" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: xcb.

Aborted (core dumped)

 

패키지 깐다고 해결되면 행복은 하겠는데...

pip install PyQt5

[링크 : https://csm-kr.tistory.com/114]

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