我正在尝试使用以下代码在python 3.7中显示带有openCV 4.1的图像：
public ImageButton play, stop, record;
MediaRecorder myAudioRecorder;
String outputFile;
boolean refreshed=false;
public static Typeface tf;
ImageButton infoButton;
ImageButton refreshButton;
TextView minVal;
TextView maxVal;
TextView mmVal;
TextView curVal;
long currentTime=0;
long savedTime=0;
boolean isChart=false;
boolean isMoney=false;
/* Decibel */
private boolean bListener = true;
private boolean isThreadRun = true;
final int REQUEST_PERMISSION_CODE=1000;
final int AUDIO_RECORDING_DELAY=1000;
private Thread thread;
float volume = 10000;
int refresh=0;
private MyMediaRecorder mRecorder ;
boolean x=false;
final World world=new World();
DatabaseReference mref;
Button shoeScore;
final Handler handler = new Handler(){
@Override
public void handleMessage(Message msg){
super.handleMessage(msg);
DecimalFormat df1 = new DecimalFormat("####.0");
if(msg.what == 1){
double x=World.maxDB*100;
maxVal.setText(df1.format(x));
curVal.setText(df1.format(World.dbCount));
if(refresh==1){
long now=new Date().getTime();
now=now-currentTime;
now=now/1000;
refresh=0;
}else {
refresh++;
}
}
}
};
@Override
protected void onStart() {
if (world.hello){
x=true;
startListenAudio();
}
super.onStart();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (!checkPermissionFromDevice()){
requets_Permission();
}
// HERE START CODE
play = (ImageButton) findViewById(R.id.playButton);
stop = (ImageButton) findViewById(R.id.stopButton);
record = (ImageButton) findViewById(R.id.recordButton);
stop.setEnabled(false);
outputFile = Environment.getExternalStorageDirectory().getAbsolutePath() + "/recording.3gp";
myAudioRecorder = new MediaRecorder();
myAudioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
myAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
myAudioRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
myAudioRecorder.setOutputFile(outputFile);
record.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
try {
myAudioRecorder.prepare();
myAudioRecorder.start();
} catch (IllegalStateException ise) {
// Make something
} catch (IOException ioe) {
//make something
}
record.setEnabled(false);
stop.setEnabled(true);
Toast.makeText(getApplicationContext(), "Recording started", Toast.LENGTH_LONG).show();
}
});
stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
myAudioRecorder.stop();
myAudioRecorder.release();
myAudioRecorder = null;
record.setEnabled(true);
stop.setEnabled(false);
play.setEnabled(true);
Toast.makeText(getApplicationContext(), "Audio recorded sucessfully", Toast.LENGTH_LONG).show();
}
});
play.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
MediaPlayer mediaPlayer = new MediaPlayer();
try {
mediaPlayer.setDataSource(outputFile);
mediaPlayer.prepare();
mediaPlayer.start();
Toast.makeText(getApplicationContext(), "Playing Audio", Toast.LENGTH_LONG).show();
} catch (Exception e) {
//Make something
}
}
});
但是它给了我以下错误信息：
import cv2
img_path = 'Path/to/image.tiff'
img = cv2.imread(img_path)
cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()
我在做什么错了？
编辑：
这似乎不是权限问题，或者文件不存在，因为我可以使用带有matplotlib的以下代码来显示图像
error: OpenCV(4.1.0) /tmp/opencv-20190505-12101-14vk1fh/opencv-4.1.0/modules/highgui/src/window.cpp:352: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'imshow'
编辑2 ：
尝试使用import matplotlib.pyplot as plt
img_path = 'Path/to/image.tiff'
img = plt.imread(img_path)
fig = plt.figure(0)
plt.imshow(img)
plt.show()
软件包
tifffile我现在收到以下错误消息：
import tifffile as tiff
a = tiff.imread(img_path)
a.shape
尝试Traceback (most recent call last):
File "opencv_script.py", line 16, in <module>
a = tiff.imread(img_path)
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/tifffile/tifffile.py", line 720, in imread
return tif.asarray(**kwargs)
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/tifffile/tifffile.py", line 2405, in asarray
maxworkers=maxworkers)
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/tifffile/tifffile.py", line 4539, in asarray
strip = unpack(strip)
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/tifffile/tifffile.py", line 4491, in unpack
runlen)
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/tifffile/tifffile.py", line 10306, in packints_decode
% (numbits, numpy.dtype(dtype)))
NotImplementedError: unpacking 12-bit integers to uint16 not supported
软件包：
libdif我得到：
import libtiff
# img_path = "/Users/mymac/Documents/research/In-Vitro_AK_Studie/boarder_tracking_py/line.jpg"
img_path = '/Users/mymac/Documents/research/In-Vitro_AK_Studie/boarder_tracking_py/Camera No.1_C001H001S0001000561.tif'
# img_path_save = '/Users/mymac/Documents/research/In-Vitro_AK_Studie/boarder_tracking_py/modif.tif'
# img = plt.imread(img_path)
# threshold the image
# img.shape
# fig = plt.figure(0)
# plt.imshow(img)
# plt.show()
tif = libtiff.TIFF.open(img_path)
im = tif.read_image()
然后我安装了Traceback (most recent call last):
File "opencv_script.py", line 18, in <module>
im = tif.read_image()
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/libtiff/libtiff_ctypes.py", line 552, in read_image
typ = self.get_numpy_type(bits, sample_format)
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/libtiff/libtiff_ctypes.py", line 509, in get_numpy_type
raise NotImplementedError("bits = {0:d}".format(bits))
NotImplementedError: bits = 12
，但收到了以下错误消息：
imagecodecs-lite我上传了有问题的文件on github
编辑3（工作代码）
Traceback (most recent call last):
File "opencv_script.py", line 19, in <module>
im = tif.read_image()
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/libtiff/libtiff_ctypes.py", line 552, in read_image
typ = self.get_numpy_type(bits, sample_format)
File "/Users/mymac/miniconda3/envs/pyimageprocessing/lib/python3.7/site-packages/libtiff/libtiff_ctypes.py", line 509, in get_numpy_type
raise NotImplementedError("bits = {0:d}".format(bits))
NotImplementedError: bits = 1