I want to know how can I do for integrating vision.VideoPlayer into a GUI Axes please, i'm using computer vision system i tried to integrate this tools into axis but i don't arrive, the size of real time video image is 640x480 RGB
videocam1 = vision.VideoPlayer;
videocam2 = vision.VideoPlayer;
while get(hObject,'Value')
frame1 = getdata(cam1,1,'uint8');
frame1 = double(frame1) ;
frame2 = getdata(cam2,1,'uint8');
frame2 = double(frame2);
m1 = min(min(min(frame1))) ; M1 = max(max(max(frame1))) ;
m2 = min(min(min(frame2))) ; M2 = max(max(max(frame2))) ;
frame01 = (frame1-m1)/(M1-m1) ;
frame02 = (frame2-m2)/(M2-m2) ;
% showFrameOnAxis(hAxes.axis1, videocam1.step(frame01));
% showFrameOnAxis(hAxes.axis2, videocam2.step(frame02));
videocam1.step(frame01);
videocam2.step(frame02);
nframe = nframe+1 ;
end
Here is an example called Video Display in a Custom User Interface that shows you how to do just that.
Related
I'd like to use nim to resize the default display resolution on a machine (windows 10 only), I want to basically do it via a command line call like setDisplay 1280 1024
I've seen and used the python example Resize display resolution using python with cross platform support which I can follow, but just can't translate. I just don't get how to fill in EnumDisplaySettings
import winim/lean
import strformat
var
cxScreen = GetSystemMetrics(SM_CXSCREEN)
cyScreen = GetSystemMetrics(SM_CYSCREEN)
msg = fmt"The screen is {cxScreen} pixels wide by {cyScreen} pixels high."
EnumDisplaySettings(Null,0, 0) #total type mismatch
MessageBox(0, msg, "Winim Example Screen Size", 0)
Tried checking stuff like https://cpp.hotexamples.com/fr/examples/-/-/EnumDisplaySettings/cpp-enumdisplaysettings-function-examples.html but wasn't much help, same for https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-changedisplaysettingsa
I wrote about 2% of this answer myself, and the rest came from pointystick on discord - thanks to them!
The solution is a bit lazy, but it's so fast that for most that won't matter.
With no cmd line args it will just set the display to the default recommendation, else with 2 cmd line args it can reset your display if it finds a match
import winim/lean
import os
import strutils
var modeToFind = (width: 1920, height: 1080, bitsPerPixel: 32,
refreshRate: 60)
var reset = 0
type ModeNotFoundError = object of CatchableError
proc getDisplayMode(): DEVMODEW =
## Finds the wanted screen resolution or raises a ModeNotFoundError.
var
nextMode: DWORD = 0
mode: DEVMODEW
while EnumDisplaySettings(nil, nextMode, mode) != 0:
echo $mode.dmPelsWidth & " x " & $mode.dmPelsHeight &
" x " & $mode.dmBitsPerPel &
" - " & $mode.dmDisplayFrequency
inc nextMode
if (mode.dmPelsWidth == modeToFind.width) and
(mode.dmPelsHeight == modeToFind.height):
echo "Found it!"
return mode
if(reset==1):
return mode
raise newException(ModeNotFoundError, "Cannot find wanted screen mode")
proc changeResolution(): bool =
## Actually changes the resolution. The return value indicates if it worked.
result = false
try:
let wantedMode = getDisplayMode()
result = ChangeDisplaySettings(wantedMode.unsafeAddr, 0.DWORD) == DISP_CHANGE_SUCCESSFUL
except ModeNotFoundError: discard
when isMainModule:
var
cxScreen:int32 = 0 #= GetSystemMetrics(SM_CXSCREEN)
cyScreen:int32 = 0 # = GetSystemMetrics(SM_CYSCREEN)
try:
cxScreen = (int32) parseInt(paramStr(1))
cyScreen = (int32) parseInt(paramStr(2))
modeToFind.width = cxScreen
modeToFind.height = cyScreen
except:
reset = 1
if not changeResolution():
echo "Change Resolution Failed"
I have designed a method when product not found in using barcode scanning I put this code in that product not found.
#api.multi
def _product_sound(self)
PyAudio = pyaudio.PyAudio
bitrate = 8000
frq = 500
LENGTH = 2
if frq > bitrate:
bitrate = frq+100
numberofframe = int(bitrate * LENGTH)
restframe = numberofframe % bitrate
wave = ''
for x in range(numberofframe):
wave = wave+chr(int(math.sin(x/((bitrate/frq)/math.pi))*124+128))
for x in range(restframe):
wave = wave+chr(128)
p = PyAudio()
stream = p.open(format = p.get_format_from_width(1), channels = 1,rate = bitrate,output = True)
stream.write(wave)
stream.stop_stream()
stream.close()
p.terminate()
When I try this code in single system its work perfectly. but when I try to using in the different device that time sound not be generated.
So how to play sound in odoo with different system or current system ?
I want to save pitch,yaw and roll data in excel file for all frames. Eg: if i have 200 frames then i want to save 200 frames information in excel file. I have tried but my code only stores one frame data.exceldata
fitting_model='models/Chehra_f1.0.mat';
load(fitting_model);
mov=VideoReader('7_a.avi'); %Read video file and create an object
c=mov.NumberOfFrames;
for k=1:c
a = read(mov, k);
img=im2double(a);
disp(['Detecting Face in ']);
faceDetector = vision.CascadeObjectDetector(); % detect face in an image
bbox = step(faceDetector, img); %create boundary box around face
test_init_shape = InitShape(bbox,refShape); %initialize facial points in variable
test_init_shape = reshape(test_init_shape,49,2);
if size(img,3) == 3
test_input_image = im2double(rgb2gray(img));
else
test_input_image = im2double((img));
end
disp(['Fitting']);
MaxIter=6;
test_points = Fitting(test_input_image,test_init_shape,RegMat,MaxIter);
load('3D_Shape_Model.mat');
n=49;
test_image=img;
imshow(test_image);hold on;
% % Compute 3D Head Pose
if(n==49)
test_shape=test_points;
[pitch,yaw,roll] = ComputePose(PDM_49,test_shape(:));
filename='framesdata.xlsx';
header = {'Pitch', 'yaw ','roll'};
new_data = num2cell([pitch(:), yaw(:), roll(:)]);
output = [header; new_data];
xlswrite(filename,output);
end
plot(test_shape(:,1),test_shape(:,2),'b*');
title([num2str(i),' : Pitch = ',num2str(pitch),' ; Yaw = ',num2str(yaw),' ; Roll = ',num2str(roll)]);
set(gcf,'units','normalized','outerposition',[0 0 1 1]);
pause(0.5);
close all;
end
As #excaza stated, you will need to move the xlswrite command out of your loop or specify the cells you are writing. Please see the xlswrite Doc for more information. The correct syntax would be :
xlswrite(filename,A,xlRange)
The following is the example they provide:
filename = 'testdata.xlsx';
A = {'Time','Temperature'; 12,98; 13,99; 14,97};
sheet = 2;
xlRange = 'E1';
xlswrite(filename,A,sheet,xlRange)
You will just need to provide xlswrite the address to start writing data.
How overlay audio onto other audio?
I want to make a FadeIO(..) feature for audio channels of clips in avisynth.
I have this script
video = DirectShowSource("Z:\video\vvv.mp4", fps=fps_count, audio=true, convertfps=true).AssumeFPS(fps_count, 1).ConvertToYV12()
audio = BlankClip(audio_rate=audio_sample_rate, channels=2, length = logo_timeout).ResampleAudio(audio_sample_rate)
blank = BlankClip(logo_timeout, res_width, res_height, pixel_type = "RGB32", fps = fps_count).ConvertToYV12()
blank = Overlay(blank, blank_logo, mode = "blend", x = 0, y = 0)
blank = AudioDub(blank, blank_logo).AssumeFPS(fps_count, 1)
And smooth overlaying of parts of videos is like this:
blank.Trim(0 * fps_count, transparent_overlay_latency * fps_count).Overlay(video.Trim(0 * fps_count, transparent_overlay_latency * fps_count), mode="blend", mask=logo.showalpha(), x = 0, y = 0)
But this works only for videos. The audio starts when second clip (video.Trim()) is already faded In. I want the sound of this video "grows up" , when the clip appears.
As the #SeedManc said in commentary under question:
avisynth.nl/index.php/Dissolve, it allows for gradual transition between two clips, both in terms of video and audio.
This method is very simple and is the answer for my question
I'm completely new to QMultimedia. At the moment, I try to get the audio stream from the microphone in my webcam for further processing. Right now I just try to continuously show the volume level of the sound "heard" by the mic with a slider. So I googled some code together (found nearly 10 tons of examples how I can play an audio, but only a few blocks of C++ code about audio input) and got stuck.
This is my actual code:
import sys, time
from PyQt4 import Qt, QtGui, QtCore, QtMultimedia
class VolumeSlider(QtGui.QSlider):
def __init__(self, parent=None):
super(VolumeSlider, self).__init__(parent)
self.audio = None
self.volumeSlider = QtGui.QSlider(QtCore.Qt.Horizontal)
self.volumeSlider.setTickInterval(1)
self.volumeSlider.setMaximum(100)
self.volumeSlider.setValue(49)
self.volumeSlider.show()
self.openMicStream()
# THIS IS WHAT I WANT - DOESN'T WORK
while True:
self.volumeSlider.setValue(self.audio.volume())
time.sleep(0.02)
def openMicStream( self ):
#audioInputDevices = QtMultimedia.QAudioDeviceInfo.availableDevices(QtMultimedia.QAudio.AudioInput)
#for d in audioInputDevices: d.deviceName()
info = QtMultimedia.QAudioDeviceInfo(QtMultimedia.QAudioDeviceInfo.defaultInputDevice())
print "Default audio input device:", info.deviceName()
audioFormat = QtMultimedia.QAudioFormat()
audioFormat.setFrequency(8000);
audioFormat.setChannels(1);
audioFormat.setSampleSize(8);
audioFormat.setCodec("audio/pcm");
audioFormat.setByteOrder(QtMultimedia.QAudioFormat.LittleEndian);
audioFormat.setSampleType(QtMultimedia.QAudioFormat.UnSignedInt);
audioDeviceInfo = QtMultimedia.QAudioDeviceInfo.defaultInputDevice();
if not audioDeviceInfo.isFormatSupported(audioFormat):
sys.stderr("default audioFormat not supported try to use nearest")
audioFormat = audioDeviceInfo.nearestFormat(audioFormat);
self.audioInput = QtMultimedia.QAudioInput(audioFormat);
fmtSupported = info.isFormatSupported(audioFormat)
print "Is the selected format supported?", fmtSupported
if not fmtSupported:
audioFormat = info.nearestFormat(audioFormat)
print "Is the nearest format supported?", info.isFormatSupported(audioFormat)
self.audio = QtMultimedia.QAudioInput(audioFormat, None)
self.audio.start()
if __name__ == "__main__":
app = Qt.QApplication(sys.argv)
x = VolumeSlider()
sys.exit(app.exec_())
Could anybody poke me in the head what I have to do at the "#THIS IS WHAT I WANT" place to calculate and show the current level of volume?
There is no inbuilt function for computing the current volume level of the input sound signal when recorded with QAudioInput neither in Qt 4 (QAudioInput documentation) nor in Qt 5.
But you could calculate it for yourself. The root-mean-square in a moving window of the signal is often used as a measure for current loudness. See How can I determine how loud a WAV file will sound? for more suggestions.
Solved it after a while of working on another parts. Now I can at least hear the sound out of the boxes, after I changed the openMicStream(self) to this:
def openMicStream( self ):
info = QAudioDeviceInfo(QAudioDeviceInfo.defaultInputDevice())
print "Default audioInput input device: ", info.deviceName()
audioFormat = QAudioFormat()
audioFormat.setFrequency(44100);
audioFormat.setChannels(1);
audioFormat.setSampleSize(16);
audioFormat.setCodec("audioInput/pcm");
audioFormat.setByteOrder(QAudioFormat.LittleEndian);
audioFormat.setSampleType(QAudioFormat.UnSignedInt);
audioDeviceInfo = QAudioDeviceInfo.defaultInputDevice();
if not audioDeviceInfo.isFormatSupported(audioFormat):
messages.error(__name__, "default audioFormat not supported try to use nearest")
audioFormat = audioDeviceInfo.nearestFormat(audioFormat);
print audioFormat.frequency()
print audioFormat.channels()
print audioFormat.sampleSize()
print audioFormat.codec()
print audioFormat.byteOrder()
print audioFormat.sampleType()
self.audioInput = QAudioInput(audioFormat);
audioFmtSupported = info.isFormatSupported(audioFormat)
messages.info(__name__, "Is the selected format supported?"+str(audioFmtSupported))
if not audioFmtSupported:
audioFormat = info.nearestFormat(audioFormat)
messages.info(__name__, "Is the nearest format supported?"+str(info.isFormatSupported(audioFormat)))
self.audioInput = QAudioInput(audioFormat, None)
self.audioOutput = QAudioOutput(audioFormat, None)
device = self.audioOutput.start()
self.audioInput.start(device)