Abstract:
A system and method for pixel and object level neutral detection. An image is scanned into a plurality of pixels. A local pixel of interest is identified along with a neighborhood of pixels around the local pixel. The chroma value of the current pixel as well as the average local chroma of the neighborhood are calculated. An adjusted chroma is determined based on the average local chroma. A luminance value can also be measured for the current pixel and for each of the neighbor pixels and a luminance variation determined. The adjusted chroma can be further modified based on the determined luminance variation. The adjusted chroma is compared against a threshold to determine a neutral pixel detection tag for the current pixel. The pixel tags can be utilized to control an adjustment of pixels in a device independent L*a*b* or a device independent CMYK domain.
Abstract translation:一种用于像素和物体水平中性检测的系统和方法。 将图像扫描成多个像素。 感兴趣的局部像素与局部像素周围的像素的邻域一起被识别。 计算当前像素的色度值以及邻域的平均局部色度。 基于平均局部色度确定调整色度。 还可以测量当前像素和每个相邻像素的亮度值,并确定亮度变化。 可以基于所确定的亮度变化来进一步修改经调整的色度。 将调整后的色度与阈值进行比较,以确定当前像素的中性像素检测标签。 可以利用像素标签来控制独立于设备的L * a * b *或与设备无关的CMYK域的像素的调整。
Abstract:
A method and apparatus for configuring an image path of an image processing apparatus is herein described. The image processing apparatus includes at least an input terminal or scanner for inputting or scanning document into image data and an output terminal or printer for printing documents. The method includes selecting one of a plurality of output modes using a selection device associated with the image processing apparatus. Based on the selected output mode, an image path among a plurality of image processing elements of the apparatus is selected among a plurality of image paths. Each image path corresponds to one of the plurality of output modes. After a document is scanned with the scanner into image data, the image data is processed with the processing elements in the selected image path, and output or printed based on the processed image data.
Abstract:
A method for producing an electronic annotated document including embedding annotation information into an electronic annotation object having image data including an annotation, and producing the electronic annotated document using pixel information from the electronic document and the electronic annotation object. The annotation embedded information may be used to select corresponding pixel information from one of the electronic annotated object and electronic document to be provided in the electronic annotated document. A system and tangible storage medium having machine-readable instructions for producing an electronic annotated document are also disclosed.
Abstract:
A method of performing non-linear transformation of a digital image for contrast modification. The original video input is compared to a linear transformation with gain and offset; and, the differential of the change in gain or slope and the input image Δ is multiplied by a factor m obtained from a look-up table and the product of m and Δ added to the original input to obtain the output video.
Abstract:
A system and method are provided for digital correction of a plurality of color channels and color image data. In color reproduction, a color image may be composed of a plurality of superimposed color channels in a color space. In order to assure the proper alignment of color channels and exemplary applications such as color printing, one or more of the plurality of color channels which compose a complete color image may be scaled to an output resolution, and corrected in order to ensure proper alignment and authentic reproduction of a color image. In place of a plurality of independent clocks, one for each channel, a single clock is provided for every channel, and additional unit is supplied to scale each channel according to independent characteristics.
Abstract:
The disclosed systems and methods pertain to the processing of large format images in a manner to avoid introducing imaging defects, and more particularly to dividing the large image into bands, processing these bands in parallel and then putting them back together in to create the final processed image. The methods include the use of overlapping the image bands, padding of the bands prior to processing and the redefinition of image values at common boundaries of the bands to minimize or eliminate visible defects.
Abstract:
Disclosed herein is a method and system for determining a billing structure for outputting documents using an image processing apparatus. If image data of the document includes color pixels, a billing structure is determined based on an estimated total color pixel count. The color pixels of the image data are counted in a device independent space and the total color pixel count of the image data to be output in a device dependent space is estimated. Based on the estimation, a billing structure is chosen. Processing and determining a billing structure based on image data in the device independent space avoids charging a customer for color print job when only a small amount of color pixels are printed. It also encourages determining charges independently of the marking engine or output device.
Abstract:
A system and method for controlling the work flow or processing of scanned images is disclosed. The system and method identify appropriate image processing techniques, particularly techniques well-suited to enable image compression yet maintain image quality so as to facilitate the storage and transmission of scanned image data.
Abstract:
What is disclosed is a novel system and method for pixel and object level neutral detection. In one embodiment, an image is scanned into a plurality of pixels. A local pixel of interest is identified along with a neighborhood of pixels around the local pixel. The chroma value of the current pixel as well as the average local chroma of the neighborhood are calculated. An adjusted chroma is determined based on the average local chroma. A luminance value can also be measured for the current pixel and for each of the neighbor pixels and a luminance variation determined. The adjusted chroma can be further modified based on the determined luminance variation. The adjusted chroma is compared against a threshold to determine a neutral pixel detection tag for the current pixel. The pixel tags can be utilized to control an adjustment of pixels in a device independent L*a*b* or CMYK domain.
Abstract translation:公开的是用于像素和物体水平中性检测的新型系统和方法。 在一个实施例中,将图像扫描成多个像素。 感兴趣的局部像素与局部像素周围的像素的邻域一起被识别。 计算当前像素的色度值以及邻域的平均局部色度。 基于平均局部色度确定调整色度。 还可以测量当前像素和每个相邻像素的亮度值,并确定亮度变化。 可以基于所确定的亮度变化来进一步修改经调整的色度。 将调整后的色度与阈值进行比较,以确定当前像素的中性像素检测标签。 像素标签可用于控制独立于设备的L * a * b *或CMYK域中像素的调整。
Abstract:
What is provided herein is a novel system and method for estimating the amount of color in a document to be printed, with the capability to handle composite black, in those environments without access to all the original four color planes simultaneously. In one embodiment, input CMYK values are pre-adjusted via a look-up table to take into account the neutral balance characteristics. The planes are then scaled and quantized so that all four planes become available simultaneously. The difference among the quantized CMYK color values is compared against a threshold that is input level dependent. A pixel is classified into one of several color categories such as, for example, true neutral, fuzzy neutral, true color or fuzzy color. A color billing strategy can then be automatically determined based on the amount of color content. The method advantageously provides flexibility to support multi-tier billing in systems with various marking technologies.