private void CheckIfSomethingChaged(MNISTSetType type, int[] validNumbers, bool randomEnumerate, bool defineOrder)
{
if (lastType != type || lastValidNumbers != validNumbers || lastRandomEnumerate != randomEnumerate || lastDefineOrder != defineOrder)
{
lastType = type;
lastValidNumbers = validNumbers;
lastRandomEnumerate = randomEnumerate;
lastDefineOrder = defineOrder;
initialized = false;
}
}
/// <summary>
/// Gets the next values
/// </summary>
/// <param name="validNumbers">Array of integers, you want the selection restrict to.</param>
/// <returns>Array of arrays of floats, in which the values is encoded.</returns>
public MyMNISTImage GetNextImage(int[] validNumbers, MNISTSetType setType)
{
ArrayList images = null;
IEnumerator enumerator = null;
int examplesPerDigitCnt = 0;
if (setType == MNISTSetType.Training)
{
images = m_trainingImages;
enumerator = m_trainingImagesEnumerator;
examplesPerDigitCnt = m_trainingExamplesPerDigitCnt;
}
else if (setType == MNISTSetType.Test)
{
images = m_testImages;
enumerator = m_testImagesEnumerator;
examplesPerDigitCnt = m_testExamplesPerDigitCnt;
}
if (RandomEnumerate)
{
MyMNISTImage im = (MyMNISTImage)images[rand.Next(Math.Min(examplesPerDigitCnt * 10, images.Count))];
// choose random image until it is in the validNumbers set;
// if "sequence ordered" is ON it also has to be the expected next number in given sequence
if (m_definedOrder && im.Label != validNumbers[m_sequenceIterator] || !validNumbers.Contains(im.Label))
{
return this.GetNextImage(validNumbers, setType);
}
m_sequenceIterator = (m_sequenceIterator + 1) % validNumbers.Length;
return im;
}
else if (enumerator.MoveNext() && m_imagesServed < images.Count)
{
MyMNISTImage im = (MyMNISTImage)enumerator.Current;
m_imagesServed++;
if (m_definedOrder)
{
if (im.Label != validNumbers[m_sequenceIterator])
{
return GetNextImage(validNumbers, setType);
}
m_sequenceIterator = (m_sequenceIterator + 1) % validNumbers.Length;
}
else
{
if (!validNumbers.Contains(im.Label))
{
return GetNextImage(validNumbers, setType);
}
}
return im;
}
else
{
switch (m_afterLastImage)
{
case MNISTLastImageMethod.ResetToStart:
{
enumerator.Reset();
m_imagesServed = 0; // Hack
return GetNextImage(validNumbers, setType);
}
case MNISTLastImageMethod.SendNothing:
{
return m_blankImage;
}
default:
{
return GetNextImage(validNumbers, setType);
}
}
}
}
/// <summary>
/// Gets the next values
/// </summary>
/// <param name="validNumbers">Array of integers, you want the selection restrict to.</param>
/// <returns>Array of arrays of floats, in which the values is encoded.</returns>
public MyMNISTImage GetNextImage(int[] validNumbers, MNISTSetType setType)
{
ArrayList images = null;
IEnumerator enumerator = null;
int examplesPerDigitCnt = 0;
if (setType == MNISTSetType.Training)
{
images = m_trainingImages;
enumerator = m_trainingImagesEnumerator;
examplesPerDigitCnt = m_trainingExamplesPerDigitCnt;
}
else if (setType == MNISTSetType.Test)
{
images = m_testImages;
enumerator = m_testImagesEnumerator;
examplesPerDigitCnt = m_testExamplesPerDigitCnt;
}
if (RandomEnumerate)
{
MyMNISTImage im = (MyMNISTImage)images[rand.Next(Math.Min(examplesPerDigitCnt * 10, images.Count))];
// choose random image until it is in the validNumbers set;
// if "sequence ordered" is ON it also has to be the expected next number in given sequence
if (m_definedOrder && im.Label != validNumbers[m_sequenceIterator] || !validNumbers.Contains(im.Label))
{
return(this.GetNextImage(validNumbers, setType));
}
m_sequenceIterator = (m_sequenceIterator + 1) % validNumbers.Length;
return(im);
}
else if (enumerator.MoveNext() && m_imagesServed < images.Count)
{
MyMNISTImage im = (MyMNISTImage)enumerator.Current;
m_imagesServed++;
if (m_definedOrder)
{
if (im.Label != validNumbers[m_sequenceIterator])
{
return(GetNextImage(validNumbers, setType));
}
m_sequenceIterator = (m_sequenceIterator + 1) % validNumbers.Length;
}
else
{
if (!validNumbers.Contains(im.Label))
{
return(GetNextImage(validNumbers, setType));
}
}
return(im);
}
else
{
switch (m_afterLastImage)
{
case MNISTLastImageMethod.ResetToStart:
{
enumerator.Reset();
m_imagesServed = 0; // Hack
return(GetNextImage(validNumbers, setType));
}
case MNISTLastImageMethod.SendNothing:
{
return(m_blankImage);
}
default:
{
return(GetNextImage(validNumbers, setType));
}
}
}
}
/// <summary>
/// Gets the next values
/// </summary>
/// <param name="validNumbers">Array of integers, you want the selection restrict to.</param>
/// <returns>Array of arrays of floats, in which the values is encoded.</returns>
public MyMNISTImage GetNextImage(int[] validNumbers, MNISTSetType setType)
{
MyMNISTImage imageToReturn = null;
ArrayList images = null;
IEnumerator enumerator = null;
int examplesPerDigitCnt = 0;
if (setType == MNISTSetType.Training)
{
images = m_trainingImages;
enumerator = m_trainingImagesEnumerator;
examplesPerDigitCnt = m_trainingExamplesPerDigitCnt;
}
else if (setType == MNISTSetType.Test)
{
images = m_testImages;
enumerator = m_testImagesEnumerator;
examplesPerDigitCnt = m_testExamplesPerDigitCnt;
}
CheckIfSomethingChaged(setType, validNumbers, RandomEnumerate, m_definedOrder);
if (!initialized)
{
initialized = true;
//indicates whether this particular image was already shown. This prevents the situation that some numbers start to repeat while others do not appear on the output
alreadyShown = new bool[examplesPerDigitCnt * 10];
for (int i = 0; i < alreadyShown.Length; i++)
{
alreadyShown[i] = false;
}
//how many images to show until the set starts to repeat again
howManyLeft = examplesPerDigitCnt * validNumbers.Length;
m_sequenceIterator = 0;
m_lastServedImage = -1;
}
if (RandomEnumerate)
{
m_lastServedImage = rand.Next(Math.Min(examplesPerDigitCnt * 10, images.Count));
MyMNISTImage im = (MyMNISTImage)images[m_lastServedImage];
// choose random image until it is in the validNumbers set;
// if "sequence ordered" is ON it also has to be the expected next number in given sequence
if ((m_definedOrder && im.Label != validNumbers[m_sequenceIterator]) || !validNumbers.Contains(im.Label))
{
return this.GetNextImage(validNumbers, setType);
}
imageToReturn = im;
}
else
{
MyMNISTImage im = null;
while (enumerator.MoveNext() && m_lastServedImage < images.Count - 1)
{
im = (MyMNISTImage)enumerator.Current;
m_lastServedImage++;
if (m_definedOrder)
{
if (im.Label == validNumbers[m_sequenceIterator])
{
imageToReturn = im;
break;
}
}
else
{
if (validNumbers.Contains(im.Label))
{
imageToReturn = im;
break;
}
}
}
if (imageToReturn == null)
{
switch (m_afterLastImage)
{
case MNISTLastImageMethod.ResetToStart:
{
enumerator.Reset();
m_lastServedImage = -1;
return GetNextImage(validNumbers, setType);
}
case MNISTLastImageMethod.SendNothing:
{
return m_blankImage;
}
default:
{
return GetNextImage(validNumbers, setType);
}
}
}
}
if (alreadyShown[m_lastServedImage])
{
return this.GetNextImage(validNumbers, setType);
}
else
{
DecreaseLeftCounter(m_lastServedImage, examplesPerDigitCnt * validNumbers.Length);
m_sequenceIterator = (m_sequenceIterator + 1) % validNumbers.Length;
return imageToReturn;
}
}
private void CheckIfSomethingChaged(MNISTSetType type, int[] validNumbers, bool randomEnumerate, bool defineOrder)
{
if (lastType != type || lastValidNumbers != validNumbers || lastRandomEnumerate != randomEnumerate || lastDefineOrder != defineOrder)
{
lastType = type;
lastValidNumbers = validNumbers;
lastRandomEnumerate = randomEnumerate;
lastDefineOrder = defineOrder;
initialized = false;
}
}
/// <summary>
/// Gets the next values
/// </summary>
/// <param name="validNumbers">Array of integers, you want the selection restrict to.</param>
/// <returns>Array of arrays of floats, in which the values is encoded.</returns>
public MyMNISTImage GetNextImage(int[] validNumbers, MNISTSetType setType)
{
MyMNISTImage imageToReturn = null;
ArrayList images = null;
IEnumerator enumerator = null;
int examplesPerDigitCnt = 0;
if (setType == MNISTSetType.Training)
{
images = m_trainingImages;
enumerator = m_trainingImagesEnumerator;
examplesPerDigitCnt = m_trainingExamplesPerDigitCnt;
}
else if (setType == MNISTSetType.Test)
{
images = m_testImages;
enumerator = m_testImagesEnumerator;
examplesPerDigitCnt = m_testExamplesPerDigitCnt;
}
CheckIfSomethingChaged(setType, validNumbers, RandomEnumerate, m_definedOrder);
if (!initialized)
{
initialized = true;
//indicates whether this particular image was already shown. This prevents the situation that some numbers start to repeat while others do not appear on the output
alreadyShown = new bool[examplesPerDigitCnt * 10];
for (int i = 0; i < alreadyShown.Length; i++)
{
alreadyShown[i] = false;
}
//how many images to show until the set starts to repeat again
howManyLeft = examplesPerDigitCnt * validNumbers.Length;
m_sequenceIterator = 0;
m_lastServedImage = -1;
}
if (RandomEnumerate)
{
m_lastServedImage = rand.Next(Math.Min(examplesPerDigitCnt * 10, images.Count));
MyMNISTImage im = (MyMNISTImage)images[m_lastServedImage];
// choose random image until it is in the validNumbers set;
// if "sequence ordered" is ON it also has to be the expected next number in given sequence
if ((m_definedOrder && im.Label != validNumbers[m_sequenceIterator]) || !validNumbers.Contains(im.Label))
{
return(this.GetNextImage(validNumbers, setType));
}
imageToReturn = im;
}
else
{
MyMNISTImage im = null;
while (enumerator.MoveNext() && m_lastServedImage < images.Count - 1)
{
im = (MyMNISTImage)enumerator.Current;
m_lastServedImage++;
if (m_definedOrder)
{
if (im.Label == validNumbers[m_sequenceIterator])
{
imageToReturn = im;
break;
}
}
else
{
if (validNumbers.Contains(im.Label))
{
imageToReturn = im;
break;
}
}
}
if (imageToReturn == null)
{
switch (m_afterLastImage)
{
case MNISTLastImageMethod.ResetToStart:
{
enumerator.Reset();
m_lastServedImage = -1;
return(GetNextImage(validNumbers, setType));
}
case MNISTLastImageMethod.SendNothing:
{
return(m_blankImage);
}
default:
{
return(GetNextImage(validNumbers, setType));
}
}
}
}
if (alreadyShown[m_lastServedImage])
{
return(this.GetNextImage(validNumbers, setType));
}
else
{
DecreaseLeftCounter(m_lastServedImage, examplesPerDigitCnt * validNumbers.Length);
m_sequenceIterator = (m_sequenceIterator + 1) % validNumbers.Length;
return(imageToReturn);
}
}
