Image conversion

About: Image conversion is a research topic. Over the lifetime, 2490 publications have been published within this topic receiving 19077 citations.

Method of recording image conversion parameters in annular images, and annular image data recorded with image conversion parameters

Abstract: Image data is provided which has image conversion parameters recorded in an image format in an unphotographed area of an annular image, the annular image being shot by an omnidirectional camera. Thus the image conversion parameters are stored or transmitted along with the annular image in the same format.

Image conversion apparatus, camera, image conversion method, and storage medium with program stored therein

Abstract: Provided are an image conversion apparatus, a camera, an image conversion method, and a program, wherein a panorama image can be partially enlarged or reduced, while maintaining the characteristics of the panorama image in that images can be joined into a cylindrical shape, or in that a wide range (up to 360 degrees) can be observed simultaneously. This image conversion apparatus adopts a configuration wherein the image conversion apparatus is provided with: an image input unit that inputs a panorama image; and an image enlargement/reduction unit that enlarges/reduces the panorama image by making the enlargement ratio of the desired area within the panorama image different in a way that will make the enlargement ratio change successively at successive areas of the panorama image. In this configuration, the image enlargement/reduction unit enlarges/reduces the image such that the width, in the longitudinal direction of the panorama image, of the image after the enlargement/reduction will fit into the original panorama image.

Significance of contrast and structure features for an improved color image classification system

Abstract: In general, the three main modules of color image classification systems are: color-to-grayscale image conversion, feature extraction and classification. The color-to-grayscale image conversion is the important pre-processing step which must incorporate the significant and discriminative contrast and structure information in the converted grayscale images as in the original color image. All the existing techniques for color-to-grayscale image conversion preserves the significant contrast and structure information in the converted grayscale images in different manners. Hence, the present work is to analyze the significant and discriminative contrast and structure information preserved in the converted grayscale images using two different decolorization techniques called rgb2gray and singular value decomposition based color-to-grayscale image conversion (SVD) applied in the color image classification systems using the three different proposed features. The three different features for color image classification systems are proposed based on the combination of the existing dense SIFT features and the contrast & structure content computed using color-to-gray structure similarity index (C2G-SSIM) metric.

Method and device for positioning and identifying compressed image object

Abstract: The invention discloses a method and a device for fast searching, positioning and identifying an image object of a JPG image. The traditional method firstly converts the JPG image into a BMP image and then carrying out searching, positioning and identifying on the BMP image. Different from the traditional method, for an image object with obvious visual characteristics, by using the obvious low-frequency information of the image object, the method searches and positions the image object by utilizing frequency domain information when obtaining the image frequency domain information in the process of conversion from the JPG image into a BMP image, and converts an positioned image object area into a partial BMP image, and identifies the image object on the partial BMP image. The method and the device effectively combines the image conversion process from the JPG image to the BMP image with the object searching process carries out by utilizing the frequency domain information, greatly increases the searching and positioning speed of the image object and greatly reduces the calculated amount in the whole identifying process by partially converting the image object area into the BMP image and identifying on the BMP image, thereby obtaining the obviously effects of high seed and high efficiency.

Image display device and image display system

Abstract: PROBLEM TO BE SOLVED: To display arbitrary three-dimensional images meeting an observation direction SOLUTION: The image display device 10B for displaying an object and the image display system 40 equipped with an external memory 30 for storing the image of the object are provided The image display device 10B is equipped with a reference azimuth setting section 11b which sets a reference azimuth, a relative azimuth calculating section 12B which calculates a relative azimuth from the reference azimuth, a terminal device 20 which transmits the relative azimuth information to the external memory 30, and receives the image information meeting the relative azimuth information, and an image display element 16B which displays the received image information The external memory 30 is equipped with an image memory section 34 which stores the image obtained when the object is observed from a plurality of azimuths, an image conversion section 35 which converts the image according to the relative azimuth, and an external communication section 31 which receives the relative azimuth information from the image display device 10B and transmits the image information meeting the relative azimuth information COPYRIGHT: (C)2006,JPO&NCIPI