Feat(SNT): ajout les premiers exercices photos numérique
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SNT/02_Photographie_numerique/ecrire_image/gris.bmp
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SNT/02_Photographie_numerique/ecrire_image/gris.bmp
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SNT/02_Photographie_numerique/exercises.tex
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SNT/02_Photographie_numerique/exercises.tex
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\begin{exercise}[subtitle={Comparer des images}, step={1}, origin={ma tête}, topics={ Photo numérique }, tags={ SNT }, mode={\computerMode}]
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Dans le dossier partagé, vous trouverez différentes images.
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\begin{enumerate}
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\item Ouvrez-les puis classez-les en fonction de celles qui vous semble être les plus agréables à regarder.
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\item Quels sont les caractéristiques des images qui vous ont permis de faire ce classement.
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\end{enumerate}
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\end{exercise}
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\begin{exercise}[subtitle={Dimension d'une image}, step={1}, origin={ma tête}, topics={ Photo numérique }, tags={ SNT }, mode={\paperMode+\computerMode}]
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\begin{enumerate}
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\item Calculer le définition des images ci-dessous. Combien faut-il de pixel pour les réaliser?
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\begin{center}
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\includegraphics[scale=3]{./fig/pixelart_nb}
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\end{center}
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\item Reprendre les images de l'exercice précédent. Chercher leur définition puis calculer le nombre de pixel que comporte chaque image.
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\end{enumerate}
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\end{exercise}
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% Construire une image
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\begin{exercise}[subtitle={Image Bitmap en noir et blanc}, step={2}, origin={ma tête}, topics={ Photo numérique }, tags={ SNT }, mode={\computerMode}]
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\begin{enumerate}
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\item Ouvrir avec Gimp puis avec notepad++, les images \texttt{noir\_blanc.bmp} et \texttt{noir\_blanc2.bmp}.
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\item Lire le contenu et chercher la correspondance entre ce que vous voyez dans Notepad++ et sur Gimp (il faudra surement beaucoup zoomer).
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\item Expliquer comment est construit une image bmp en noir et blanc.
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\item Reproduire une image de l'exercice 2.
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\end{enumerate}
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\end{exercise}
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\begin{exercise}[subtitle={Faire des nuances de gris}, step={2}, origin={ma tête}, topics={ Photo numérique }, tags={ SNT }, mode={\computerMode}]
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\begin{minipage}{0.7\linewidth}
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Dans cet exercice, nous allons faire la même chose que dans l'exercice précédent mais avec des images en nuances de gris.
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\begin{enumerate}
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\item Ouvrir avec Gimp puis avec notepad++, les images \texttt{gris.bmp}.
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\item Lire le contenu et chercher la correspondance entre ce que vous voyez dans Notepad++ et sur Gimp (il faudra surement beaucoup zoomer).
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\item Expliquer comment est construit une image bmp en noir et blanc.
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\item Reproduire le plus fidèlement possible l'image ci-contre.
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\end{enumerate}
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\end{minipage}
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\hfill
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\begin{minipage}{0.2\linewidth}
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\includegraphics[scale=3]{./fig/coeur_gris}
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\end{minipage}
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\end{exercise}
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\begin{exercise}[subtitle={Des nombres de 0 à 255}, step={2}, origin={ma tête}, topics={ Photo numérique }, tags={ SNT }, mode={\computerMode}]
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Suivant le nombre de bits utilisé, on peut définition plus ou moins de niveau de gris. C'est la \textbf{profondeur}.
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\begin{itemize}
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\item Avec 1 bit, on peut faire la différence entre 2 choses : 0 (blanc) ou 1 (noir).
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\item Avec 2 bits, on peut faire la différence entre 4 choses : 00 (blanc) ou 01 (gris clair) ou 10 (gris foncé) ou 11 (noir).
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\end{itemize}
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\begin{enumerate}
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\item Combien de "gris" différent peut-on faire avec 3 bits (on comptera le blanc et le noir comme des niveaux de gris)?
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\item Avec 4 bits?
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\item Avec 8 bits?
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\end{enumerate}
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\end{exercise}
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\begin{exercise}[subtitle={Voir le monde en couleur}, step={2}, origin={ma tête}, topics={ Photo numérique }, tags={ SNT }, mode={\computerMode}]
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\end{exercise}
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SNT/02_Photographie_numerique/fig/coeur_gris.pdf
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SNT/02_Photographie_numerique/fig/coeur_gris.pdf
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SNT/02_Photographie_numerique/fig/coeur_gris.svg
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SNT/02_Photographie_numerique/fig/coeur_gris.svg
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After Width: | Height: | Size: 14 KiB |
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SNT/02_Photographie_numerique/fig/pixelart_nb.pdf
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@ -2,7 +2,7 @@ Photographie numérique
|
|||||||
######################
|
######################
|
||||||
|
|
||||||
:date: 2022-11-16
|
:date: 2022-11-16
|
||||||
:modified: 2022-11-16
|
:modified: 2022-11-17
|
||||||
:authors: Benjamin Bertrand
|
:authors: Benjamin Bertrand
|
||||||
:tags: Photos numériques
|
:tags: Photos numériques
|
||||||
:category: SNT
|
:category: SNT
|
||||||
@ -29,11 +29,58 @@ Une plénière pour faire le bilan et définir les mots résolution et définiti
|
|||||||
|
|
||||||
On s'interroge sur le poids numérique d'une image. On définit la notion de bits. On calcule alors le poids des images vues précédemment.
|
On s'interroge sur le poids numérique d'une image. On définit la notion de bits. On calcule alors le poids des images vues précédemment.
|
||||||
|
|
||||||
|
Bilan: Image numérique en format bitmap, pixel, définition.
|
||||||
|
|
||||||
Étape 2: Construire une image
|
Étape 2: Construire une image
|
||||||
-----------------------------
|
-----------------------------
|
||||||
|
|
||||||
|
- Construire une image en noir et blanc avec un éditeur de texte (bmp P1)
|
||||||
|
- Niveau de gris et binaire: comment stocker un gradient et combien de bit faut-il? Notion de profondeur.
|
||||||
|
- Construction d'une image en niveau de gris.
|
||||||
|
- Comment stocker une couleur
|
||||||
|
- Construction d'une image en couleur.
|
||||||
|
|
||||||
|
Bilan: image NB, niveau de gris et
|
||||||
|
|
||||||
Étape 3: Prise d'une image et algo
|
Étape 3: Prise d'une image et algo
|
||||||
----------------------------------
|
----------------------------------
|
||||||
|
|
||||||
|
- Acquisition d'une image numérique (optique -> capteur -> algorithmes)
|
||||||
|
- Ajustement des couleurs
|
||||||
|
-
|
||||||
|
|
||||||
Étape 4: Métadonnées
|
Étape 4: Métadonnées
|
||||||
--------------------
|
--------------------
|
||||||
|
|
||||||
|
- Lecture des métadonnées d'une image.
|
||||||
|
- Recherche des lieux de prise de vu
|
||||||
|
- Modification des métadonnées d'une image
|
||||||
|
|
||||||
|
Étape 5: Métiers liés à l'image numérique
|
||||||
|
-----------------------------------------
|
||||||
|
|
||||||
|
Préparation d'un exposé de 2-3 minutes sur les métiers liés à l'image numérique. Les élèves préparent une page web sur un métier choisi. Ils devront ensuite faire une présentation orale pour présenter le métier.
|
||||||
|
|
||||||
|
Informations sur le métier:
|
||||||
|
|
||||||
|
- Description des activités du métier
|
||||||
|
- Études à réaliser (avec éventuellement des noms d'écoles)
|
||||||
|
- Les qualités
|
||||||
|
- Le salaire
|
||||||
|
- Liens vers les sources d'informations
|
||||||
|
|
||||||
|
|
||||||
|
Idées de métiers:
|
||||||
|
|
||||||
|
- Infographiste/graphiste
|
||||||
|
- Animateur 2D/2D
|
||||||
|
- Desinger UX/UI
|
||||||
|
- Photographe
|
||||||
|
- Monteur vidéo
|
||||||
|
- Ingénieur en traitement d'images
|
||||||
|
- Directeur artistique
|
||||||
|
- Illustrateur
|
||||||
|
|
||||||
|
Tous les élèves préparent une page web. Seuls quelqu'un passent à l'oral pour la présentation.
|
||||||
|
|
||||||
|
Pour la page web, les deux fichiers suivant doivent être enregistré dans le même répertoire puis modifiés pour décrire le métier.
|
||||||
|
|||||||
BIN
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42
SNT/02_Photographie_numerique/plan_de_travail.tex
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42
SNT/02_Photographie_numerique/plan_de_travail.tex
Normal file
@ -0,0 +1,42 @@
|
|||||||
|
\documentclass[a4paper,12pt]{article}
|
||||||
|
\usepackage{myXsim}
|
||||||
|
\usepackage{pgfplots}
|
||||||
|
|
||||||
|
\author{Benjamin Bertrand}
|
||||||
|
\title{Photo numérique}
|
||||||
|
\tribe{SNT}
|
||||||
|
\date{novembre 2022}
|
||||||
|
|
||||||
|
\pagestyle{empty}
|
||||||
|
|
||||||
|
\DeclareExerciseCollection{banque}
|
||||||
|
\xsimsetup{
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
\begin{document}
|
||||||
|
\maketitle
|
||||||
|
|
||||||
|
\section{L'image numérique}
|
||||||
|
\listsectionexercises
|
||||||
|
|
||||||
|
\section{Construire une image}
|
||||||
|
\listsectionexercises
|
||||||
|
|
||||||
|
\section{Prise d'une image et algo}
|
||||||
|
\listsectionexercises
|
||||||
|
|
||||||
|
\section{Métadonnées}
|
||||||
|
\listsectionexercises
|
||||||
|
|
||||||
|
\section{Métiers liés à l'image numérique}
|
||||||
|
\listsectionexercises
|
||||||
|
|
||||||
|
|
||||||
|
\pagebreak
|
||||||
|
|
||||||
|
\input{exercises.tex}
|
||||||
|
\printcollection{banque}
|
||||||
|
|
||||||
|
|
||||||
|
\end{document}
|
||||||
Loading…
Reference in New Issue
Block a user