PPM (Portable Pixmap) l? m?t ??nh d?ng t?p ??n gi?n v? ???c s? d?ng r?ng r?i ?? l?u tr? h?nh ?nh bitmap. N? l? m?t ph?n c?a gia ??nh ??nh d?ng Netpbm, c?ng bao g?m c?c ??nh d?ng nh? PBM (Bitmap di ??ng) v? PGM (Portable Graymap). C?c t?p PPM ch? y?u ???c s? d?ng ?? l?u tr? h?nh ?nh kh?ng n?n v? ???c h? tr? b?i c?c ph?n m?m x? l? h?nh ?nh v? ?? h?a kh?c nhau.
PGM (Portable Graymap) l? m?t ??nh d?ng t?p ???c s? d?ng ?? l?u tr? h?nh ?nh thang ?? x?m. N? l? m?t ph?n c?a gia ??nh ??nh d?ng Netpbm, c?ng bao g?m c?c ??nh d?ng nh? PBM (Bitmap di ??ng) v? PPM (Pixmap di ??ng). C?c t?p PGM ??n gi?n v? ???c h? tr? r?ng r?i, l?m cho ch?ng ph? h?p v?i c?c ?ng d?ng ?? h?a v? x? l? h?nh ?nh kh?c nhau.
PBM (Portable Bitmap) l? m?t ??nh d?ng t?p ???c s? d?ng ?? l?u tr? h?nh ?nh ??n s?c (?en tr?ng). N? l? m?t ph?n c?a gia ??nh ??nh d?ng Netpbm, c?ng bao g?m c?c ??nh d?ng nh? PGM (Portable Graymap) v? PPM (Portable Pixmap). C?c t?p PBM ??n gi?n v? ???c h? tr? r?ng r?i, l?m cho ch?ng ph? h?p v?i c?c ?ng d?ng ?? h?a v? x? l? h?nh ?nh kh?c nhau.
??nh d?ng PNM (Portable Any Map) l? m?t t?p h?p c?c ??nh d?ng t?p trong gia ??nh Netpbm, c?ng bao g?m c?c ??nh d?ng nh? PBM (Bitmap di ??ng), PGM (Portable Graymap) v? PPM (Portable Pixmap). C?c t?p PNM ??ng vai tr? l? giao di?n chung ?? th? hi?n c?c lo?i h?nh ?nh raster kh?c nhau, bao g?m h?nh ?nh ??n s?c, thang ?? x?m v? m?u.
?ng d?ng web c? th? chuy?n ??i ?nh jpeg gif png bmp tif webp heic svg th?nh t?p ppm pgm, c?ng c? th? thay ??i k?ch th??c / xoay / l?t ch?ng tr?c tuy?n.
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