func loadFeatureImage(file string, sbin int) (*rimg64.Multi, error) {
f, err := loadRealImage(file)
if err != nil {
return nil, err
}
g := hog.HOG(f, hog.FGMRConfig(sbin))
return g, nil
}
func evalImage(tmpl *detect.FeatTmpl, im image.Image, pyrStep float64, hogBin int, opts featpyr.DetectOpts) []detect.Det {
// Construct image pyramid.
scales := imgpyr.Scales(im.Bounds().Size(), tmpl.Size, pyrStep)
pixpyr := imgpyr.New(im, scales)
// Construct HOG pyramid.
fn := func(rgb *rimg64.Multi) *rimg64.Multi { return hog.HOG(rgb, hog.FGMRConfig(hogBin)) }
pyr := featpyr.New(pixpyr, fn, hogBin)
// Search feature pyramid.
dets := featpyr.Detect(pyr, tmpl, opts)
return dets
}
func loadFeatImage(fname string, sbin int) (*rimg64.Multi, error) {
file, err := os.Open(fname)
if err != nil {
return nil, err
}
defer file.Close()
im, _, err := image.Decode(file)
if err != nil {
return nil, err
}
return hog.HOG(rimg64.FromColor(im), hog.FGMRConfig(sbin)), nil
}
// Returns HOG image of a visual image.
func hogImage(img image.Image, binSize int) cv.RealVectorImage {
return hog.HOG(cv.ColorImageToReal(img), binSize)
}