JPEGcrop v.2008.11

Advertisement
Advertisement

New jpegtran featuresLossless rotation and related transforms have been added to the IJG software with release 6b of 27-Mar-1998. New (08-Feb-2005): c't Logo An article about the jpegtran lossless transformation functions has been published in the German c't magazine 4/2005 (released 07-Feb-2005), title "Fotoschoner", page 188 ff. The article derives and describes the lossless transformation functions in a clear and understandable form. My draft of the article (in German) is available here: Verlustfreie_JPEG_Drehung.doc or Verlustfreie_JPEG_Drehung.pdf . Note that the draft is quite different from the published version, but the essence is the same.An Exif Patch has been added to the lossless transformation code to avoid some application problems.It is part of the release-candidate croppatch to jpegtran.A new "-perfect" switch has recently been added to the lossless transformation support in jpegtran: -perfect Fail if there is non-transformable edge blocksThe new switch is part of the release-candidate croppatch to jpegtran.A new -crop option has been added to jpegtran for 'lossless' cropping of JPEG images: -crop WxH+X+Y Crop to a rectangular subareaThis feature is in the release-candidate croppatch to jpegtran.An extended feature set "Lossless crop 'n' drop" (cut & paste) has been added to jpegtran: -crop WxH+X+Y Crop to a rectangular subarea -drop +X+Y filename Drop another imageThis extended feature set is still in experimental state, not yet release-candidate.More about new jpegtran features...New djpeg -scale N/8 with all N=1...16 feature The decompress part of the Independent JPEG Group library has got a direct rescaling feature while decoding with factors 1/2, 1/4, and 1/8. This is interesting because different spatial size output can be retrieved directly from the JPEG (DCT) data without separate full decode and spatial resample. Using a new method, this feature has now been extended to a broader and finer range of scaling factors: All scalings with factors N/8 with N=1...16 (downscale and upscale) are now supported with the djpeg -scale option or with setting the scale_num/scale_denom variables in library application. Furthermore, the performance in the old cases (1/2, 1/4, 1/8) has been improved considerably with the new method.More about new djpeg -scale N/8 with all N=1...16 feature...New cjpeg features Two new features have been added to the cjpeg tool and compression library: -quality N[,...] Compression quality (0..100; 5-95 is useful range) -scale M/N Scale image by fraction M/N, eg, 1/2 The -quality option has been extended for support of separate quality settings for luminance and chrominance (or in general, for every provided quantization table slot). This feature is useful for high-quality applications which cannot accept the damage of color data by coarse subsampling settings. You can now easily reduce the color data amount more smoothly with finer control without separate subsampling. The resulting file is fully compliant with standard JPEG decoders. A new -scale option is provided with cjpeg which complements the corresponding djpeg -scale option. The supported range of scaling factors is 8/N with all N=1...16. This means you can now easily alter the nominal spatial resolution of a given source image while compressing to JPEG without additional resampling. For example, if you have an image sensor providing an effective capture resolution of 2268x1512 pixels (HI resolution), you can now directly generate a MED resolution of 1512x1008 pixels (-scale 2/3) and a LOW resolution of 1134x756 pixels (-scale 1/2) from the sensor source resolution with the library while compressing to JPEG without additional resampling. (An efficient 12x12 FDCT is used in the -scale 2/3 case, and an efficient 16x16 FDCT is used in the -scale 1/2 case instead of the standard 8x8 FDCT inside the library, ensuring high-quality downscaled results - the resulting file is fully compliant with standard JPEG decoders.)

New jpegtran featuresLossless rotation and ...

 
  • JPEGcrop
  • 2008.11
  • WebSite
  • Windows All
  • Freeware
  • 614 Kb
  • 271
  • Free
 
 

Review JPEGcrop

  • captcha
 

Other software of WebSite
  • Bannershop GIF Animator  v.5.1.1Create and edit banners, buttons, backgrounds and other GIF animationsImport pictures, photos, vector graphics and clipartsDefine animation effects like zoom, fade or blurAdd text, shapes, gradientsResize, crop, rotate and edit bitmapsAdd 3D look ...
  • InterWARN  v.4.1.7InterWARN turns your regular internet connection into your own automated personal wire service for National Weather Service watches, warnings and statements including Storm Prediction Center watches and outlooks, and advisories from the National ...
  • LeapFTP  v.3.0.0.43LeapFTP Features Program * FTP, FXP, FTP+SSL, SFTP, HTTP, and HTTPS * Proxy support include SOCKS4 / 5, HTTP, CheckPoint, WinGate, and others * Multiple user modes adapt to local, network, and portable installations * Context-sensitive and HTML help ...

New Image Editors software
  • ACDSee Ultimate  v.14.0.0.2431ACDSee Photo Studio Ultimate 2021 is for photographers dedicated to their craft. With a focus on improved performance and precision editing, this year, choose ACDSee Photo Studio Ultimate 2021 as your sidekick.
  • PhotoPad Photo Editor Free  v.6.55PhotoPad Free image editing software is a free photo editor for Windows. It allows you to edit and apply effects to photos and other images.
  • PhotoPad Pro Edition  v.6.55PhotoPad Pro Edition for Windows is a great and easy to use digital photograph editor. Whether you are a professional photographer or simply want to edit your personal photos, PhotoPad Pro offers the powerful tools and features.
  • Easyboost Photo Print  v.8.6.0Easyboost Photo Print is the best designed software for photo print and gives user option to make batch of photos on layout pages.
  • Macromedia Fireworks  v.8Macromedia created Fireworks as a complete graphics applications aimed towards Web designers.It offers more advanced image control than existing packages, such as Photoshop or CorelDraw, for work that specifically relates to the Internet. Fireworks ...
  • TeeChart Office  v.3.0Behind the scenes, TeeChart-Office uses the awarded, mature technology of TeeChart Pro runtime components.The main purpose of TeeChart-Office is to easily create Charts, link them to heterogenous sources of data, modify and change the chart ...