A character area is identified in each page by detecting an area in which edge pixels continue in an edge image generated based on each page of a target image. A method of compressing data of each page of the target image is selected based on a ratio of the character area to each page of the edge image. First page data is generated by combining: outlined data of the character area of each page of the target image for which the first compression method has been selected; and compressed data of a background area other than the character area. Second page data is generated by compressing all data of each page of the target image for which the second compression method has been selected, and document data of the plurality of pages is generated by combining the first page data and the second page data.

An image sensor may include a pixel array having an N×M array of merged pixels arranged in a Bayer pattern, each merged pixel including an k*l matrix of unit pixels of a same color, where k and l are integers greater than two; and an image signal processor to process signals output by the pixel array in accordance with a normal mode or a zoom-in mode. In the zoom-in mode, signals from the pixel array may be remosaiced such that signals corresponding to the unit pixels are arranged in a p*q matrix of unit pixels of a same color, wherein p is a non-negative integer that is less than k and q is a non-negative integer less than 1, the p*q matrixes being arranged in a Bayer pattern.

Methods, non-transitory machine readable media, and computing devices that provide improved dictionary-based compression are disclosed. With this technology, a first portion of an input data stream is compressed using a first dictionary. A second dictionary is trained when the first dictionary is determined to be stale. The dictionary can be determined to be stale based on a size of the input data stream compressed using the first dictionary or a compression ratio decreasing by a threshold, for example. The first dictionary can be stored with metadata associated with the compressed first portion of the input data stream. Accordingly, this technology improves compression ratios, eliminates the need for reference counting, and facilitates improved reclamation of orphan dictionaries, among other advantages.

An asymmetric image transmission method and an electronic device thereof are provided. The asymmetric image transmission method is applicable to transmission of an image signal from a transmitter to a receiver and includes: modifying, by the transmitter, a first image pixel length in the image signal that conforms to a four-byte mode to a second image pixel length of a three-byte mode; transmitting a plurality of image pixels of the second image pixel length in the three-byte mode respectively through three transmission lanes of a transmission interface; and modifying, by the receiver, the second image pixel length of the image pixels to the first image pixel length of the four-byte mode to obtain the image signal.

A method comprises acquiring print setting information related to printing of image data, and, in a case where the print setting information specifies printing using at least special ink, which is ink other than ink for a process color, during printing of the image data, determining a first method as a method of processing for reducing a data size of the image data and, in a case where the print setting information specifies printing using ink for the process color without using the special ink during printing of the image data, determining a second method different from the first method as a method of processing for reducing the data size of the image data.

Techniques to improve storage of information, including encoding of multimedia data on physical pages. Some techniques include logic configured to encode multimedia data pursuant to a colorspace scheme and on a piece of paper. The logic may further be configured to generate one or more colorspaces associated with the multimedia data, perform colorspace conversions based on the generated colorspaces, and encode the multimedia data pursuant to the colorspace conversions. The logic may be further configured to apply one or both of an ultraviolet layer and an infrared layer to the physical page, e.g. paper, in order to further enhance security and provide an additional vehicle for storing and encoding data on the physical page, e.g. paper. The logic may further be configured to provide a scanning device with the ability to scan and decode the encoded data one the sheet of paper. Other embodiments are described and claimed.

A character area is identified in each page by detecting an area in which edge pixels continue in an edge image generated based on each page of a target image. A method of compressing data of each page of the target image is selected based on a ratio of the character area to each page of the edge image. First page data is generated by combining: outlined data of the character area of each page of the target image for which the first compression method has been selected; and compressed data of a background area other than the character area. Second page data is generated by compressing all data of each page of the target image for which the second compression method has been selected, and document data of the plurality of pages is generated by combining the first page data and the second page data.

Provided is an image processing apparatus for increasing the speed of pixel processing of index colors. A LUT reading unit reads a LUT for converting index colors to pixel values for each plane. A first storage unit stores the look up table read by the LUT reading unit. A plane LUT copying unit acquires pixel values corresponding to each place from the look up table stored in the first storage unit. A second storage unit stores the pixel values acquired by the plane LUT copying unit. A pixel processing unit performs image data processing using the pixel values stored in the second storage unit.

Methods, non-transitory machine readable media, and computing devices that provide improved dictionary-based compression are disclosed. With this technology, a first portion of an input data stream is compressed using a first dictionary. A second dictionary is trained when the first dictionary is determined to be stale. The dictionary can be determined to be stale based on a size of the input data stream compressed using the first dictionary or a compression ratio decreasing by a threshold, for example. The first dictionary can be stored with metadata associated with the compressed first portion of the input data stream. Accordingly, this technology improves compression ratios, eliminates the need for reference counting, and facilitates improved reclamation of orphan dictionaries, among other advantages.

The image processing apparatus includes a white balance adjustment circuit configured to adjust a color temperature to RAW data of an image obtained by capturing, a generator circuit configured to generate data of planes for each component of the image from data of which color temperature was adjusted, and a RAW encoding circuit configured to conduct compression encoding of the data of the planes.