Method for determining a production frequency of a series of drops moving in a fluidic channel
AssigneeHekat
InventorMathias GIRAULT
Life of this patent
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Abstract
The invention relates to a method for determining a frequency of production of a series of drops (2) moving in a fluidic channel (31), the method comprising the following steps: using a rolling-shutter image capture device (11) to acquire an initial image of at least two drops in series in the fluidic channel, the initial image comprising a matrix array of pixels forming rows and columns, the rows being acquired sequentially in succession by way of the rolling shutter; detecting, based on the initial image, a contour of at least one of the two drops; computing the frequency of production on the basis of the contour, of a period between the acquisition of two successive rows of pixels, and of a distance between the two drops.
Claims15
A method for determining a production frequency of a series of drops moving in a fluidic channel, the method comprising the following steps:
- acquiring, using a rolling-shutter image capture device, an initial image of at least two drops in series in the fluidic channel, the initial image comprising a matrix of pixels forming rows and columns, the rows being acquired sequentially one after the other by way of the rolling shutter;
- detecting, from the initial image, a contour of at least one of the two drops;
- calculating the production frequency based on the contour, on a delay between the acquisition of two successive rows of pixels and on a distance between the two drops.
A device for determining a production frequency of a series of drops moving in a fluidic channel, the system comprising a rolling-shutter image capture device adapted to acquire an initial image of at least two drops in series in the fluidic channel, the initial image comprising a matrix of pixels forming rows and columns, the rows being acquired sequentially one after the other using the rolling shutter, and a calculator programmed for:
- detecting, from the initial image, a contour of at least one of the two drops;
- calculating the production frequency, based on the contour, on a delay between the acquisition of two successive rows of pixels and on a distance between the two drops.
Dependencies are inferred from the claim text.