Image measuring method and image measuring apparatus

摘要

An image measuring method according to an embodiment comprises a clock generating step, a noise reducing step, a data acquisition step, a digital data generating step and an image data generating step. In the clock generating step, clock signals are generated. In the noise reducing step, the noise of the generated clock signals is reduced to a predetermined threshold or lower. In the data acquisition step, analog data indicating the inner morphology of an object is acquired. In the digital data generating step, digital data is generated by sampling the analog data based on the clock signals with reduced noise. In the image data generating step, image data of the object is generated by performing data processing including Fourier transform on the generated digital data.

主权项

1. An image measuring method comprising:
a clock generating step that generates clock signals; a noise reducing step that reduces the noise of the generated clock signals to a predetermined threshold or lower; a data acquisition step that acquires analog data indicating the inner morphology of an object; a digital data generating step that samples the analog data based on the clock signals with reduced noise to generate digital data; an image data generating step that performs data processing including Fourier transform on the generated digital data, thereby generating image data of the object; and a threshold determining step that determines the threshold based on intensity information indicating the correspondence between noise intensity and image artifact intensity of clock signals obtained in advance, wherein the intensity information is generated based on the signals corresponding to a maximum depth position of an imaging range in the depth direction that is set in advance.