公开(公告)号：US20110176726A1

公开(公告)日：2011-07-21

申请号：US13001780

申请日：2009-12-29

Applicant: Seung-Yong Lee ,  Yong-Jin Kim ,  Cheol-Hun Jang

Inventor： Seung-Yong Lee ,  Yong-Jin Kim ,  Cheol-Hun Jang

IPC: G06K9/00

CPC classification number: H04N1/40012 ,  H04N9/67 ,  H04N9/77

Abstract: Provided are a color to grayscale image conversion method of converting a color image into a grayscale image while maintaining original features of the color image, and a recording medium storing a program for performing the same. When an original color image is input, a target gradient with the features of the input original color image is acquired, and a global mapping function for converting the original color image into a grayscale image is determined based on the acquired target gradient. Thereafter, the original color image is converted into a grayscale image using the determined global mapping function. Therefore, it is possible to quickly convert a color image into a grayscale image, and to acquire a high-quality grayscale image with features of color difference included in the original color image.

Abstract translation: 提供了一种将彩色图像转换为灰度图像同时保持彩色图像的原始特征的彩色到灰度级图像转换方法，以及存储用于执行该彩色图像的程序的记录介质。 当输入原始彩色图像时，获取具有输入原始彩色图像的特征的目标梯度，并且基于所获取的目标梯度来确定用于将原始彩色图像转换为灰度图像的全局映射功能。 此后，使用所确定的全局映射函数将原始彩色图像转换成灰度图像。 因此，可以将彩色图像快速转换为灰度图像，并且获得具有包括在原始彩色图像中的色差特征的高质量灰度图像。

公开(公告)号：US08526719B2

公开(公告)日：2013-09-03

申请号：US13001780

申请日：2009-12-29

Applicant: Seung-Yong Lee ,  Yong-Jin Kim ,  Cheol-Hun Jang

Inventor： Seung-Yong Lee ,  Yong-Jin Kim ,  Cheol-Hun Jang

IPC: G06K9/00

CPC classification number: H04N1/40012 ,  H04N9/67 ,  H04N9/77

Abstract: Provided are a color to grayscale image conversion method of converting a color image into a grayscale image while maintaining original features of the color image, and a recording medium storing a program for performing the same. When an original color image is input, a target gradient with the features of the input original color image is acquired, and a global mapping function for converting the original color image into a grayscale image is determined based on the acquired target gradient. Thereafter, the original color image is converted into a grayscale image using the determined global mapping function. Therefore, it is possible to quickly convert a color image into a grayscale image, and to acquire a high-quality grayscale image with features of color difference included in the original color image.

Abstract translation: 提供了一种将彩色图像转换为灰度图像同时保持彩色图像的原始特征的彩色到灰度级图像转换方法，以及存储用于执行该彩色图像的程序的记录介质。 当输入原始彩色图像时，获取具有输入原始彩色图像的特征的目标梯度，并且基于所获取的目标梯度来确定用于将原始彩色图像转换为灰度图像的全局映射功能。 此后，使用所确定的全局映射函数将原始彩色图像转换成灰度图像。 因此，可以将彩色图像快速转换为灰度图像，并且获得具有包括在原始彩色图像中的色差特征的高质量灰度图像。