cv
Computer vision: object detection, OCR, face recognition, image analysis.
Load with: use cv
Quick example
use cv
result = cvfd("value")
prn(result)Functions
Face detection
cvfd(img)
Performs the operation. Takes img.
cvfdr(img, faces)
Performs the operation. Takes img, faces.
Face recognition
cvfr()
Creates from another format.
cvfrt(m, faces, lbls)
Performs the operation. Takes m, faces, lbls.
cvfrp(m, img)
Performs the operation. Takes m, img.
cvfrs(e1, e2)
Resets. Takes e1, e2.
Object detection
cvbjd(img, model)
Performs the operation. Takes img, model.
cvbjb(img, dets)
Performs the operation. Takes img, dets.
OCR
cvocr(img, lang)
Creates a new instance. Takes img, lang.
cvcrb(img, lang)
Performs the operation. Takes img, lang.
QR/Barcode
cvqrd(img)
Reads data. Takes img.
cvqrg(txt, size)
Performs the operation. Takes txt, size.
cvbrc(img)
Performs the operation. Takes img.
Template matching
cvtmp(img, tmpl, thresh)
Performs the operation. Takes img, tmpl, thresh.
Contours
cvcn1(img, mode)
Performs the operation. Takes img, mode.
cvdr0(img, ct, col)
Performs the operation. Takes img, ct, col.
cvcnt(ct)
Performs the operation. Takes ct.
cvcn0(ct)
Performs the operation. Takes ct.
Keypoints/SIFT-like
cvkp(img)
Performs the operation. Takes img.
cvkpm(kp1, kp2)
Performs the operation. Takes kp1, kp2.
Optical flow
cvfl0(prev, curr)
Performs the operation. Takes prev, curr.
Background subtraction
cvmg2()
Performs the operation.
cvbsp(bs, frm)
Performs the operation. Takes bs, frm.
cvbsf(bs)
Performs the operation. Takes bs.
Color spaces
cvgry(img)
Performs the operation. Takes img.
cvhsv(img)
Performs the operation. Takes img.
cvlab(img)
Performs the operation. Takes img.
cvycr(img)
Creates a new instance. Takes img.
Thresholding
cvthb(img, th)
Performs the operation. Takes img, th.
cvthd(img, blk, c)
Performs the operation. Takes img, blk, c.
cvtht(img)
Performs the operation. Takes img.
Morphology
cverd(img, ker)
Reads data. Takes img, ker.
cvdil(img, ker)
Performs the operation. Takes img, ker.
cvopn(img, ker)
Performs the operation. Takes img, ker.
cvcls(img, ker)
Lists items. Takes img, ker.
Edge detection
cvcan(img, th1, th2)
Performs the operation. Takes img, th1, th2.
cvsbl(img, dx, dy)
Performs the operation. Takes img, dx, dy.
cvlpl(img)
Performs the operation. Takes img.
Corner detection
cvhrr(img)
Performs the operation. Takes img.
cvshi(img)
Performs the operation. Takes img.
cvorb(img)
Performs the operation. Takes img.
Hough transforms
cvhg0(img, th)
Performs the operation. Takes img, th.
cvhgh(img, dp, minr, mxr)
Performs the operation. Takes img, dp, minr, mxr.
Histograms
cvhs1(img, ch)
Performs the operation. Takes img, ch.
cvhs0(img)
Performs the operation. Takes img.
cvhst(img, ref)
Sets a value or starts a process. Takes img, ref.
Image stitching
cvstt(imgs)
Performs the operation. Takes imgs.
Panorama
cvpno(imgs)
Performs the operation. Takes imgs.
Depth estimation
cvdpt(img, model)
Performs the operation. Takes img, model.
Segmentation
cvseg(img, model)
Performs the operation. Takes img, model.
cvgrb(img, rect)
Performs the operation. Takes img, rect.
Feature extraction
cvhog(img)
Performs the operation. Takes img.
cvlbp(img)
Performs the operation. Takes img.
cvhgv(hog)
Performs the operation. Takes hog.
Camera calibration
cvchs(nx, ny)
Performs the operation. Takes nx, ny.
cvfnd(img, bd)
Performs the operation. Takes img, bd.
cvclb(objpts, imgpts, sz)
Performs the operation. Takes objpts, imgpts, sz.
cvnds(img, cam, dist)
Performs the operation. Takes img, cam, dist.
Pose estimation
cvpse(objpts, imgpts, cam, dist)
Sets a value. Takes objpts, imgpts, cam, dist.
cvaxs(img, r, t, cam, dist, sz)
Performs the operation. Takes img, r, t, cam, dist, sz.
AR markers
cvrco(board, id)
Connects. Takes board, id.
cvdtr(img, dict)
Performs the operation. Takes img, dict.
cvdrw(img, corners, ids)
Performs the operation. Takes img, corners, ids.
Motion detection
cvmtn(bg, frm, th)
Performs the operation. Takes bg, frm, th.
cvmgs()
Performs the operation.
cvpdm(mog, frm)
Performs the operation. Takes mog, frm.
cvfgm(mog)
Performs the operation. Takes mog.
Tracking
cvtr0()
Performs the operation.
cvtr2()
Performs the operation.
cvtr3()
Performs the operation.
cvtrk()
Performs the operation.
cvtr1(trk, img, box)
Performs the operation. Takes trk, img, box.
cvtr4(trk, img)
Performs the operation. Takes trk, img.
Augmented reality
cvwrp(img, dst, h)
Performs the operation. Takes img, dst, h.
cvfn0(src, dst)
Performs the operation. Takes src, dst.
cvwr0(img, m, sz)
Performs the operation. Takes img, m, sz.
DNN/Deep learning inference
cvne(net, cfg)
Creates a new instance. Takes net, cfg.
cvprd(m, img)
Reads data. Takes m, img.
cvgtl(m, nm)
Performs the operation. Takes m, nm.
cvstl(m, nm, w, b)
Performs the operation. Takes m, nm, w, b.
YOLO specific
cvylo(img, cfg, wts)
Performs the operation. Takes img, cfg, wts.
cvydr(img, dets, cls)
Performs the operation. Takes img, dets, cls.
Image classification
cvcls1(img, model)
Performs the operation. Takes img, model.
Super resolution
cvsr(img, factor)
Performs the operation. Takes img, factor.
Denoising
cvdn0(img)
Performs the operation. Takes img.
cvdns(img)
Performs the operation. Takes img.
Inpainting
cvnpn(img, mask)
Performs the operation. Takes img, mask.
Blur detection
cvblr(img)
Performs the operation. Takes img.
Focus measure
cvfcs(img)
Performs the operation. Takes img.
Color clustering
cvqnt(img, k)
Performs the operation. Takes img, k.
Dominant colors
cvdmc(img, n)
Performs the operation. Takes img, n.
Image comparison
cvssm(a, b)
Performs the operation. Takes a, b.
cvpsn(a, b)
Performs the operation. Takes a, b.
cvmse(a, b)
Sets a value. Takes a, b.
cvncc(a, b)
Performs the operation. Takes a, b.
Stereoscopic
cvstr(l, r, disp)
Performs the operation. Takes l, r, disp.
cvrpr(disp, q)
Processes or prints. Takes disp, q.
Video analysis
cvflw(prev, nxt, pts)
Performs the operation. Takes prev, nxt, pts.
cvcms(prob, win, crit)
Performs the operation. Takes prob, win, crit.
cvmen(img, mask)
Encodes. Takes img, mask.
Video stabilization
cvstb(vid)
Performs the operation. Takes vid.
Scene text detection
cvtxt(img)
Performs the operation. Takes img.
cvtx0(boxes)
Performs the operation. Takes boxes.
Notes
- Computer vision primitives - image matrices, convolutions, filters.