Temukan kontur dari gambar yang bukan biner

Mari kita pelajari lebih lanjut cara menyiapkan gambar agar dapat menemukan konturnya dan mengekstrak informasi darinya.

Kita akan memproses gambar dua dadu ungu yang dimuat sebagai image_dice dan menentukan angka yang muncul pada masing-masing dadu.

Purple dice

Pada kasus ini, gambar belum berupa grayscale atau biner. Artinya, kita perlu melakukan beberapa langkah praproses gambar sebelum mencari kontur. Pertama, kita akan mengubah gambar menjadi gambar grayscale berupa array 2D, lalu menerapkan thresholding. Terakhir, kontur akan ditampilkan bersama dengan gambar aslinya.

Modul color, measure, dan filters sudah diimpor sehingga Anda dapat menggunakan fungsinya untuk menemukan kontur dan menerapkan thresholding.

Kita juga mengimpor modul io untuk memuat image_dice dari memori lokal menggunakan imread. Baca selengkapnya di sini.

Latihan ini adalah bagian dari kursus

Pemrosesan Citra dengan Python

Latihan interaktif praktis

Cobalah latihan ini dengan menyelesaikan kode contoh berikut.

# Make the image grayscale
image_dice = color.____(image_dice)

Edit dan Jalankan Kode

Latihan ini adalah bagian dari kursus

Pemrosesan Citra dengan Python

SkillTag.level.intermediateSkillTag.label

4.8+

Mulai Kursus Gratis

Jump into digital image structures and learn to process them! Extract data, transform and analyze images using NumPy and Scikit-image. With just a few lines of code, you will convert RGB images to grayscale, get data from them, obtain histograms containing very useful information, and separate objects from the background!

Exercise 1: Make images come alive with scikit-image Exercise 2: Is this gray or full of color?Exercise 3: RGB to grayscale Exercise 4: NumPy for images Exercise 5: Flipping out Exercise 6: Histograms Exercise 7: Getting started with thresholding Exercise 8: Apply global thresholding Exercise 9: When the background isn't that obvious Exercise 10: Trying other methods Exercise 11: Apply thresholding

You will learn to <strong>detect object shapes</strong> using edge detection filters, <strong>improve medical images</strong> with contrast enhancement <strong>and even enlarge pictures to five times its original size! </strong> You will also apply morphology to make thresholding more accurate when segmenting images and go to the next level of processing images with Python.

Exercise 1: Jump into filtering Exercise 2: Edge detection Exercise 3: Blurring to reduce noise Exercise 4: Contrast enhancement Exercise 5: What's the contrast of this image?Exercise 6: Medical images Exercise 7: Aerial image Exercise 8: Let's add some impact and contrast Exercise 9: Transformations Exercise 10: Aliasing, rotating and rescaling Exercise 11: Enlarging images Exercise 12: Proportionally resizing Exercise 13: Morphology Exercise 14: Handwritten letters Exercise 15: Improving thresholded image

So far, you have done some very cool things with your image processing skills! In this chapter, you will apply <strong>image restoration to remove objects, logos, text, or damaged areas</strong> in pictures! You will also learn how to apply noise, use segmentation to speed up processing, and find elements in images by their contours.

Exercise 1: Pemulihan citra Exercise 2: Mari memulihkan gambar yang rusak Exercise 3: Menghapus logo Exercise 4: Derau Exercise 5: Ayo tambahkan noise!Exercise 6: Mengurangi derau Exercise 7: Mengurangi noise sambil mempertahankan tepi Exercise 8: Superpiksel & segmentasi Exercise 9: Jumlah piksel Exercise 10: Segmentasi superpiksel Exercise 11: Menemukan kontur Exercise 12: Membuat kontur bentuk Exercise 13: Temukan kontur dari gambar yang bukan biner

Latihan Saat Ini

Exercise 14: Hitung jumlah titik pada gambar dadu

After completing this chapter, you will have a deeper knowledge of image processing as you will be able to <strong>detect edges, corners, and even faces! </strong> You will learn how to detect not just front faces but also face profiles, cat, or dogs. You will apply your skills to more complex <strong>real-world applications.</strong> Learn to master several widely used image processing techniques with very few lines of code!

Exercise 1: Finding the edges with Canny Exercise 2: Edges Exercise 3: Less edgy Exercise 4: Right around the corner Exercise 5: Perspective Exercise 6: Less corners Exercise 7: Face detection Exercise 8: Is someone there?Exercise 9: Multiple faces Exercise 10: Segmentation and face detection Exercise 11: Real-world applications Exercise 12: Privacy protection Exercise 13: Help Sally restore her graduation photo Exercise 14: Amazing work!