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diff --git a/tools/tflite_accuracy/README.md b/tools/tflite_accuracy/README.md new file mode 100644 index 000000000..22804e140 --- /dev/null +++ b/tools/tflite_accuracy/README.md @@ -0,0 +1,37 @@ +Using the batch execution tool +============================== + +The batch execution tool (`tflite_accuracy`) can be used to run experiments +where execution time and accuracy are to be measured on a test set. +`tflite_accuracy` reads a neural network model from a file and a series of +input images from a directory, runs each image through the network, +and collect statistics, such as execution time and accuracy. + +In order to run this tool, you'll need: + +* a model in `.tflite` format; +* a set of preprocessed input images in binary format, properly named +(see below). + +`tflite_accuracy` expects all the input images to be located in the same directory +in the file system. Each image file is the binary dump of the network's +input tensor. So, if the network's input tensor is a `float32` tensor of +format (1, 224, 224, 3) containing 1 image of height 224, width 224, and +3 channels, each image file is expected to be a series of 224 * 224 * 3 +`float32` values. + +`tflite_accuracy` does **not** perform any preprocessing on the input tensor +(e.g., subtraction of mean or division by standard deviation). Each image +file is treated as the final value of the input tensor, so all the +necessary preprocessing should be done prior to invoking the tool. + +In order to calculate accuracy on the image set, `tflite_accuracy` needs to know +the correct label corresponding to each image. This information is +extracted from the file's name: the first four characters in the name are +assumed to be the numerical code of the image's class. So, a file named +`0123_0123456789.bin` is assumed to represent an image belonging to class +`123`. The remainder of the name (`0123456789` in the example) is assumed +to be an identifier of the image itself. + +The width and height each image can be informed via the command line +argument `--imgsize`, whose default value is 224.
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