MNIST TUTORIAL#

Connect to EvaDB#

%pip install --quiet "evadb[vision,notebook]"
import evadb
cursor = evadb.connect().cursor()

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
detoxify 0.5.1 requires transformers==4.22.1, but you have transformers 4.30.1 which is incompatible.

Note: you may need to restart the kernel to use updated packages.

Download the video and load it into EvaDB#

# Getting MNIST as a video
!wget -nc "https://www.dropbox.com/s/yxljxz6zxoqu54v/mnist.mp4"

# Load the video into EvaDB
cursor.query("DROP TABLE IF EXISTS MNISTVid").df()
cursor.load("mnist.mp4", "MNISTVid", format="video").df()

File ‘mnist.mp4’ already there; not retrieving.

	0
0	Number of loaded VIDEO: 1

Run the Image Classification Function over the video#

# Connecting to the table with the loaded video
query = cursor.table("MNISTVid")

# Here, id refers to the frame id
# Each frame in the loaded MNIST video contains a digit
query = query.filter("id = 30 OR id = 50 OR id = 70 OR id = 0 OR id = 140")

# We are retrieving the frame "data" and 
# the output of the Image Classification function on the data 
# ("MnistImageClassifier(data).label")
query = query.select("data, MnistImageClassifier(data).label")

response = query.df()

Visualize output of query on the video#

# !pip install matplotlib
import matplotlib.pyplot as plt
import numpy as np

# create figure (fig), and array of axes (ax)
fig, ax = plt.subplots(nrows=1, ncols=5, figsize=[6,8])

for axi in ax.flat:
    idx = np.random.randint(len(response))
    img = response['mnistvid.data'].iloc[idx]
    label = response['mnistimageclassifier.label'].iloc[idx]
    axi.imshow(img)
    
    axi.set_title(f'label: {label}')

plt.show()

../../_images/9801c77e05317af0db7dea5586ab0dfcdec54c40708b68febd9d0d1be41f2cc7.png

Drop the function if needed#

cursor.drop_udf("MnistImageClassifier").df()

	0
0	UDF MnistImageClassifier successfully dropped