|
public static PyrLK ( Byte>.Image |
||
| prev | Byte>.Image | First frame, at time t |
| curr | Byte>.Image | Second frame, at time t + dt |
| prevPyrBuffer | Byte>.Image | Buffer for the pyramid for the first frame. If it is not NULL, the buffer must have a sufficient size to store the pyramid from level 1 to level #level ; the total size of (image_width+8)*image_height/3 bytes is sufficient |
| currPyrBuffer | Byte>.Image | Similar to prev_pyr, used for the second frame |
| prevFeatures | Array of points for which the flow needs to be found | |
| winSize | Size of the search window of each pyramid level | |
| level | int | Maximal pyramid level number. If 0 , pyramids are not used (single level), if 1 , two levels are used, etc |
| criteria | Specifies when the iteration process of finding the flow for each point on each pyramid level should be stopped | |
| flags | Emgu | Flags |
| currFeatures | Array of 2D points containing calculated new positions of input features in the second image | |
| status | Byte | Array. Every element of the array is set to 1 if the flow for the corresponding feature has been found, 0 otherwise |
| trackError | float | Array of double numbers containing difference between patches around the original and moved points |
| Результат | void | |
public static void PyrLK(
Image<Gray, Byte> prev,
Image<Gray, Byte> curr,
Image<Gray, Byte> prevPyrBuffer,
Image<Gray, Byte> currPyrBuffer,
PointF[] prevFeatures,
Size winSize,
int level,
MCvTermCriteria criteria,
Emgu.CV.CvEnum.LKFLOW_TYPE flags,
out PointF[] currFeatures,
out Byte[] status,
out float[] trackError)
{
Image<Gray, Byte> prevPyrBufferParam = prevPyrBuffer ?? new Image<Gray, byte>(prev.Width + 8, prev.Height / 3);
Image<Gray, Byte> currPyrBufferParam = currPyrBuffer ?? prevPyrBufferParam.CopyBlank();
status = new Byte[prevFeatures.Length];
trackError = new float[prevFeatures.Length];
currFeatures = new PointF[prevFeatures.Length];
CvInvoke.cvCalcOpticalFlowPyrLK(
prev,
curr,
prevPyrBufferParam,
currPyrBufferParam,
prevFeatures,
currFeatures,
prevFeatures.Length,
winSize,
level,
status,
trackError,
criteria,
flags);
#region Release buffer images if they are create within this function call
if (!object.ReferenceEquals(prevPyrBufferParam, prevPyrBuffer)) prevPyrBufferParam.Dispose();
if (!object.ReferenceEquals(currPyrBufferParam, currPyrBuffer)) currPyrBufferParam.Dispose();
#endregion
}
|
OpticalFlow::PyrLK ( Byte>.Image |
