A device for automatically imaging the capillary blood vessels of a living tissue likely to move, comprising: • a light source; • an optical device to guide the light towards the living tissue, the light being absorbed by erythrocytes of the capillary blood vessels; • a camera for acquiring at least one sequence of images which shows a region of interest of the capillary blood vessels, over a given duration, the absorption of the light by the erythrocytes on the images showing the capillary blood vessels, • a microscope connected to the camera, • a process and display unit, connected to the camera, • the process and display unit being configured for: - selecting images of the sequence, called 'selected images', arranged in chronological order of acquisition; - shuffling the selected images, for decorrelating temporally the selected images, by arranging them in a shuffled order different from the chronological order; - realigning spatially the selected images arranged in the shuffled order; - generating a projected image by projection of the pixels of the realigned selected images, in a stack, the projected values of the pixels forming the projected image being: • minimal intensity values of the pixels of all the selected images, the projection of the minimal of intensity values of the pixels rendering all the positions of all erythrocytes of all the selected images in the projected image, or • average intensity values of the pixels of all the selected images, the projection of the average intensity values rendering the average flow in the capillary vessels in the projected image, or • maximal intensity values of the pixels of all the selected images, the projection of the maximal of intensity values of the pixels rendering the positions where the flow of erythrocytes is stagnant. • a light source; • an optical device to guide the light towards the living tissue, the light being absorbed by erythrocytes of the capillary blood vessels; • a camera for acquiring at least one sequence of images which shows a region of interest of the capillary blood vessels, over a given duration, the absorption of the light by the erythrocytes on the images showing the capillary blood vessels, • a microscope connected to the camera, • a process and display unit, connected to the camera, • the process and display unit being configured for: - selecting images of the sequence, called 'selected images', arranged in chronological order of acquisition; - shuffling the selected images, for decorrelating temporally the selected images, by arranging them in a shuffled order different from the chronological order; - realigning spatially the selected images arranged in the shuffled order; - generating a projected image by projection of the pixels of the realigned selected images, in a stack, the projected values of the pixels forming the projected image being: • minimal intensity values of the pixels of all the selected images, the projection of the minimal of intensity values of the pixels rendering all the positions of all erythrocytes of all the selected images in the projected image, or • average intensity values of the pixels of all the selected images, the projection of the average intensity values rendering the average flow in the capillary vessels in the projected image, or • maximal intensity values of the pixels of all the selected images, the projection of the maximal of intensity values of the pixels rendering the positions where the flow of erythrocytes is stagnant. - selecting images of the sequence, called 'selected images', arranged in chronological order of acquisition; - shuffling the selected images, for decorrelating temporally the selected images, by arranging them in a shuffled order different from the chronological order; - realigning spatially the selected images arranged in the shuffled order; - generating a projected image by projection of the pixels of the realigned selected images, in a stack, • minimal intensity values of the pixels of all the selected images, the projection of the minimal of intensity values of the pixels rendering all the positions of all erythrocytes of all the selected images in the projected image, or • average intensity values of the pixels of all the selected images, the projection of the average intensity values rendering the average flow in the capillary vessels in the projected image, or • maximal intensity values of the pixels of all the selected images, the projection of the maximal of intensity values of the pixels rendering the positions where the flow of erythrocytes is stagnant.