X-Received: by 2002:a05:622a:14:: with SMTP id x20mr14056794qtw.671.1640624330992;
        Mon, 27 Dec 2021 08:58:50 -0800 (PST)
X-Received: by 2002:a05:622a:1389:: with SMTP id o9mr15585675qtk.109.1640624330676;
 Mon, 27 Dec 2021 08:58:50 -0800 (PST)
Path: ...!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: fr.comp.os.linux.configuration
Date: Mon, 27 Dec 2021 08:58:50 -0800 (PST)
Injection-Info: google-groups.googlegroups.com; posting-host=2a01:cb1c:f17:900:d55f:acf7:3257:81ec;
 posting-account=q7TWSwoAAACOGlDiqgPG6hvLEUJmQy4p
NNTP-Posting-Host: 2a01:cb1c:f17:900:d55f:acf7:3257:81ec
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <f8f21be3-b7bd-4948-9af1-47e23983d82fn@googlegroups.com>
Subject: extraction ?
From: ptilou <ptilou@gmail.com>
Injection-Date: Mon, 27 Dec 2021 16:58:50 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Bytes: 1757
Lines: 31

slt,

quelqu=E2=80=99un la teste, et peut me proposer mieux :
1
2
3
4
5
6
7
8
9
10
11
=20
// 1) on cr=C3=A9e un rectangle qui va s=C3=A9lectionner la partie =C3=A0 d=
=C3=A9couper
// on le cr=C3=A9e avec un point (x,y), une longueur, une largeur
CvRect ROI =3D cvRect(pointX,pointY,img_src->width,img_src->height);
img_dest =3D cvCreateImage(cvSize(cvROI.width,cvROI.height), img_src->depth=
, 1);
// d=C3=A9finit la r=C3=A9gion d'int=C3=A9r=C3=AAt de la source img_src
cvSetImageROI(img_src, cvROI);
// copier le rect s=C3=A9lectionn=C3=A9 de img_src dans img_dest
cvCopy(img_src,img_dest,0);
// lib=C3=A9rer la Region Of Interest de l'img source
cvResetImageROI(img_src);

=F0=9F=A4=A9=20

=E2=80=94=20
ptilou