File Type Options - CGM

The File Type Options dialog is entered when you press Options in the Image Conversion dialog or the Send Image dialog. The dialog allows you to specify convert options for the currently selected image file format.

The available options depend on the file format. Here are shown the options for the CGM file format.

The CGM file format can contain different object types, including graphics, text, and images. An image saved as CGM in EasyCopy contains a single image object ("cell array"). Note, that you can read any CGM file by means of the licensable option EasyCGM, but CGM files you read are converted to image format.

Color Mode

Best Fit

Let EasyCopy determine the best color mode. This is the default. EasyCopy will choose the optimal color mode for the given image taking other current settings into account.

RGB

RGB means a 24-bit RGB image ("true color").

Gray Scale

If possible a gray scale image using 8 bits per pixel is written, or a colormap defining 256 shades of gray is used.

Color Map

A color mapped image with 256 different colors (8 bits per pixel).

Error Diffusion
Enable this option if you want color differences distributed to the neighboring pixels. Normally, this results in a substantially better color rendering, although at the expense of image details; the sharpness becomes slightly degraded. Refer also to the topic Image Shading.

Colormap
This is the color map to be used, if the selected Color Mode results in the creation of a color map of exactly 256 colors.

Optimized

A color map that gives the best representation of the input image. If the input image also is color mapped, the original color map is used. Otherwise, a color map optimized for the current image is calculated.

Standard

A fixed, predefined color map. This option is useful if several images are to appear side-by-side on a device that can only display 256 colors.

Metric

The image is scaled according to the settings in the Image Size dialog and is saved together with absolute dimensions calculated from the Resolution setting. This is the default.

Abstract

The image is scaled according to the settings in the Image Size dialog and is saved without any absolute dimensions (the image is only dimensioned in pixel units).

The image size measured in pixels is the same for these two modes.

Compression

None

Select None to get an uncompressed CGM file.

Runlength

Select Runlength to get a compressed file. This is the default.

CGM Profile
You can specify, that the CGM file is saved with an ATA, CALS, or PIP profile. The default is ATA.