JP2013074921A5

JP2013074921A5 -

Info

Publication number: JP2013074921A5
Application number: JP2011215097A
Authority: JP
Filing date: 2011-09-29
Publication date: 2014-05-08
Anticipated expiration: 2031-09-29

Description

本発明に係るネイルプリント装置は、
印刷指が載置される指配置台と、
前記印刷指の指爪を撮像して指爪画像を取得する撮像手段と、
前記撮像手段により撮像された前記指爪画像に基づいて爪領域を検出する爪領域検出手段と、
前記爪領域検出手段によって検出された爪領域に印刷を施すように制御する印刷制御手段と、
前記指配置台に載置された前記印刷指の指爪を当該印刷指の腹側から照明する照明手段とを備え、
前記撮像手段は、前記指爪画像として、前記照明手段により照明しない状態で前記印刷指の指爪を撮像して得られる第１指爪画像と、前記照明手段により照明した状態で前記印刷指の指爪を撮像して得られる第２指爪画像とを取得し、
前記爪領域検出手段は、前記第１指爪画像と前記第２指爪画像との間の輝度変化を検出し、この輝度変化に基づいて、前記爪領域として、前記指爪の爪先領域と爪床領域とを検出することを特徴とする。
また、本発明に係る印刷制御方法は、
印刷指が載置される指配置台と、前記印刷指の指爪を撮像して指爪画像を取得する撮像手段とを備えているネイルプリント装置に用いられる印刷制御方法において、
前記指配置台に載置された前記印刷指の指爪を当該印刷指の腹側から照明しない状態で前記印刷指の指爪を撮像して第１指爪画像を取得し、前記照明した状態で前記印刷指の指爪を撮像して第２指爪画像を取得する画像取得ステップと、
前記第１指爪画像と前記第２指爪画像との間の輝度変化を検出し、この輝度変化に基づいて、前記指爪の爪先領域と爪床領域とを爪領域として検出する爪領域検出ステップと、
この爪領域検出ステップにより検出された前記爪領域に印刷を施すように制御する印刷制御ステップと、
を備えていることを特徴とする。 The nail printing apparatus according to the present invention is
A finger placement table on which printing fingers are placed;
Imaging means for capturing a fingernail image by capturing a fingernail of the printing finger;
A nail region detection means for detecting the nail area based on the fingernail image captured by the imaging means,
Print control means for controlling to perform printing on the nail area detected by the nail area detection means;
Illuminating means for illuminating a fingernail of the printing finger placed on the finger placement table from the ventral side of the printing finger;
The imaging unit includes a first fingernail image obtained by imaging a fingernail of the printing finger without being illuminated by the illumination unit as the fingernail image, and a state of the printing finger illuminated by the illumination unit. Obtaining a second fingernail image obtained by imaging the fingernail;
Said pawl region detecting means detects a brightness change between the second nail image and the first nail image, on the basis of the brightness change, as the nail area, toe area and the claw of the nail and detecting a floor area.
In addition, a printing control method according to the present invention includes:
In a printing control method used in a nail printing apparatus including a finger placement table on which a printing finger is placed and an imaging unit that captures a fingernail of the printing finger and acquires a fingernail image,
The first fingernail image is acquired by imaging the fingernail of the printing finger without illuminating the fingernail of the printing finger placed on the finger placement base from the ventral side of the printing finger, and the illuminated state An image acquisition step of capturing a fingernail of the printing finger and acquiring a second fingernail image;
A nail region detection that detects a luminance change between the first fingernail image and the second fingernail image and detects a toe region and a nail bed region of the fingernail as a nail region based on the luminance change. Steps,
A print control step of controlling so as to perform printing on the detected said pawl regions by the nail region detection step,
It is characterized by having.

本発明によれば、印刷指の腹側から指爪を照明する前後の指爪画像の色情報の変化に基づいて、爪領域として爪先領域と爪床領域とを検出しているので、爪領域を正確かつ安定的にしかも簡単に検出することができるばかりでなく、爪領域に対する印刷を確実かつ容易に行うことができる。 According to the present invention, the nail region and the nail bed region are detected as the nail region based on the change in the color information of the fingernail image before and after illuminating the fingernail from the ventral side of the printing finger. Can be detected accurately, stably and easily, and printing on the nail region can be performed reliably and easily.

Claims

A finger placement table on which printing fingers are placed;
Imaging means for capturing a fingernail image by capturing a fingernail of the printing finger;
A nail region detection means for detecting the nail area based on the fingernail image captured by the imaging means,
And print control means for controlling to perform printing on the detected said pawl regions by the nail region detecting means,
Illuminating means for illuminating the fingernail of the printing finger placed on the finger placement table from the ventral side of the printing finger,
The imaging unit includes a first fingernail image obtained by imaging a fingernail of the printing finger without being illuminated by the illumination unit as the fingernail image, and a state of the printing finger illuminated by the illumination unit. Obtaining a second fingernail image obtained by imaging the fingernail;
Said pawl region detecting means detects a brightness change between the second nail image and the first nail image, on the basis of the brightness change, as the nail area, toe area and the claw of the nail nail printing apparatus and detects the floor area.

Said pawl area detection means, based on the luminance change of the R component in the first image and a color image is the second image, nail according to claim 1, characterized in that detecting the toe region Printing device.

Further comprising a nail stimulation mechanism that stimulates the nail part by applying pressure to the nail part of the printing finger and changes the color of the nail part;
The imaging unit obtains a third fingernail image in a state where the nail part of the printing finger is stimulated by the nail stimulation mechanism without being illuminated by the illumination unit,
The nail region detection unit is further claimed in claim 1 or 2, characterized in that detecting the nail bed area based on a change in the color information of the first nail image and the third nail image Nail printing equipment.

In a printing control method used in a nail printing apparatus including a finger placement table on which a printing finger is placed and an imaging unit that captures a fingernail of the printing finger and acquires a fingernail image,
The first fingernail image is acquired by imaging the fingernail of the printing finger without illuminating the fingernail of the printing finger placed on the finger placement base from the ventral side of the printing finger, and the illuminated state An image acquisition step of capturing a fingernail of the printing finger and acquiring a second fingernail image;
A nail region detection that detects a luminance change between the first fingernail image and the second fingernail image and detects a toe region and a nail bed region of the fingernail as a nail region based on the luminance change. Steps,
A print control step of controlling so as to perform printing on the detected said pawl regions by the nail region detection step,
A printing control method comprising: