Microorganism information providing device and method

A method of providing microorganism information, the method comprising:

• receiving a plurality of training images which have been obtained by photographing in time series an outgoing wave emitted by irradiating a wave to a sample containing a microorganism of which type or concentration is previously known;
• machine-learning classification criteria based on a feature of a change over time from the plurality of training images which have been obtained in time series;
• receiving a plurality of images obtained by photographing in time series an outgoing wave which is emitted by irradiating a wave onto a new sample;
• and
• identifying a type or a concentration of a microorganism included in the new sample based on the plurality of images and the classification criteria, wherein
• each of the plurality of training images or each of the plurality of images comprises speckle information that is generated by multiple scattering by the microorganism due to waves incident on the sample or the new sample.