Documentation
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Overview ¶
Package stitch allows stitching a sequence of image frames of a linearly (as in direction) moving object into an image of the entire object.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type AutoStitcher ¶
type AutoStitcher struct {
// contains filtered or unexported fields
}
AutoStitcher is an automatic train detector and stitcher. Use NewAutoStitcher() to create an instance.
func NewAutoStitcher ¶
func NewAutoStitcher(c Config) *AutoStitcher
NewAutoStitcher creates a new AutoStitcher.
func (*AutoStitcher) Frame ¶
Frame adds a frame to the AutoStitcher. Takes ownership of the image data buffer, so be sure to make a copy before passing it.
func (*AutoStitcher) TryStitchAndReset ¶
func (r *AutoStitcher) TryStitchAndReset() *Train
TryStitchAndReset tries to stitch any remaining frames and resets the sequence.
type Config ¶
type Config struct {
PixelsPerM float64
MinSpeedKPH float64
MaxSpeedKPH float64
MinLengthM float64
MaxFrameCountPerSeq int
}
Config is the configuration for a AutoStitcher. All values must be > 0, except for MinSpeedKPH which might also be 0.
type Train ¶
type Train struct {
StartTS time.Time
// Always positive.
NFrames int
// Always positive (absolute value).
LengthPx float64
// Positive sign means movement to the right, negative to the left.
SpeedPxS float64
// Positive sign means increasing speed for trains going to the right, breaking for trains going to the left.
AccelPxS2 float64
Conf Config
Image *image.RGBA `json:"-"`
GIF *gif.GIF `json:"-"`
}
Train represents a detected train.
func (*Train) AccelMpS2 ¶
AccelMpS2 returns the acceleration in m/2^2, corrected for speed direction: Positive means accelerating, negative means breaking.
func (*Train) DirectionS ¶
DirectionS returns the train direction as string "left" or "right".
Source Files