Mavzu: Tasvirlar matrissalari bilan ishlash

Mavzu: Tasvirlar matrissalari bilan ishlash
Ishdan maqsad:

Matlab muhitida tasvirlarning matritsa ustida amallarni bajarish, tasvirni bo’laklarga ajratish va uni qaytadan yig’ish jarayonini o’rganish.

Asosiy qism:

1. Rangli tasvirni dasturga yuklash va uni oq-qora holatga o’tkazish.

Rangli tasvirni yuklash va uni oq-qora tusga o’tkazish uchun quyidagi amallarni bajarishimiz kerak:

>>img=imread(‘20140203_170819.jpg’);

>>a=rgb2gray(img);

>>imshow(a)

1-rasm
2. Tasvirni bo’laklarga bo’lish

Tasvirning matrissasini bo’laklarga bo’lish uchun maxsus komandalardan foydalaniladi. Biz quyidagi tasvir matrissasini to’rt bo’lakka bo’lishni ko’rib o’tamiz:
>>b1=a(900:1200,1200:1400);//Birinchi bo’lak

>>imshow(b1)

2-rasm
>>b2=a(900:1800,1200:2000);//ikkinchi bo’lak

>>imshow(b2)

3-rasm
>>b3=a(1850:2000,1850:2250);//uchinchi bo’lak

>>imshow(b3)

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>>b4=a(900:1600,1450:2600);//to’rtinchi bo’lak

>>imshow(b4)

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3. Barcha bo’laklarni bitta grafikka chiqarish

Buning uchun subplot komandasidan foydalanamiz. Buyruq ko’rinishi quyidagicha:

>>subplot(2,2,1),imshow(b1),subplot(2,2,2),imshow(b2),subplot(2,2,3),imshow(b3),subplot(2,2,4),imshow(b4)


6-rasm