Liquid crystal screen reading identification method and device for digital display instrument

The embodiment of the invention provides a liquid crystal screen reading identification method and device for a digital display instrument, and the method comprises the steps: obtaining an image comprising the digital display instrument and a liquid crystal screen reading, and inputting the image to a first preset model, wherein the first preset model is a model obtained by deleting convolution layers of a receptive field block network RFB Net based on spatial resolution; taking an output result of the first preset model as positioning information of the liquid crystal screen display number, and performing slicing processing on an area containing the liquid crystal screen display number in the image according to the positioning information to obtain an image slice; inputting the image slice to a second preset model, and taking an output result of the second preset model as an identification result of the liquid crystal display reading, wherein the second preset model is a CRNN. The device executes the method.