mirror of https://github.com/commaai/tinygrad.git
50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
import ast
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import io
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import numpy as np
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from PIL import Image
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from tinygrad.tensor import Tensor
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from tinygrad.helpers import getenv
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from models.vit import ViT
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from extra.utils import fetch
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"""
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fn = "gs://vit_models/augreg/Ti_16-i21k-300ep-lr_0.001-aug_none-wd_0.03-do_0.0-sd_0.0.npz"
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import tensorflow as tf
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with tf.io.gfile.GFile(fn, "rb") as f:
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dat = f.read()
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with open("cache/"+ fn.rsplit("/", 1)[1], "wb") as g:
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g.write(dat)
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"""
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Tensor.training = False
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if getenv("LARGE", 0) == 1:
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m = ViT(embed_dim=768, num_heads=12)
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else:
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# tiny
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m = ViT(embed_dim=192, num_heads=3)
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m.load_from_pretrained()
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# category labels
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lbls = fetch("https://gist.githubusercontent.com/yrevar/942d3a0ac09ec9e5eb3a/raw/238f720ff059c1f82f368259d1ca4ffa5dd8f9f5/imagenet1000_clsidx_to_labels.txt")
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lbls = ast.literal_eval(lbls.decode('utf-8'))
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#url = "https://upload.wikimedia.org/wikipedia/commons/4/41/Chicken.jpg"
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url = "https://repository-images.githubusercontent.com/296744635/39ba6700-082d-11eb-98b8-cb29fb7369c0"
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# junk
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img = Image.open(io.BytesIO(fetch(url)))
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aspect_ratio = img.size[0] / img.size[1]
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img = img.resize((int(224*max(aspect_ratio,1.0)), int(224*max(1.0/aspect_ratio,1.0))))
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img = np.array(img)
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y0,x0=(np.asarray(img.shape)[:2]-224)//2
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img = img[y0:y0+224, x0:x0+224]
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img = np.moveaxis(img, [2,0,1], [0,1,2])
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img = img.astype(np.float32)[:3].reshape(1,3,224,224)
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img /= 255.0
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img -= 0.5
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img /= 0.5
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out = m.forward(Tensor(img))
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outnp = out.cpu().numpy().ravel()
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choice = outnp.argmax()
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print(out.shape, choice, outnp[choice], lbls[choice])
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